ROYAL OAK MINES INC
10-Q, 1998-08-14
GOLD AND SILVER ORES
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<PAGE>

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                                   UNITED STATES
                         SECURITIES AND EXCHANGE COMMISSION
                               WASHINGTON, D.C. 20549
                                          
                                     FORM 10-Q
                                          
            /X/ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                          SECURITIES EXCHANGE ACT OF 1934
                    For the quarterly period ended June 30, 1998
                                          
                                         OR
                                          
            / / TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                          SECURITIES EXCHANGE ACT OF 1934
                  For the transition period from ______ to _______
                                          
                           Commission File Number 1-4350
                                          
                                  ROYAL OAK MINES INC.                 
               (Exact name of registrant as specified in its charter) 
                                          
ONTARIO, CANADA                           98-0160821
- -------------------------------------     -----------------------------------
(State or other jurisdiction of           (I.R.S. Employer Identification No.)
incorporation or organization)          

c/o Royal Oak Mines (USA) Inc.
5501 Lakeview Drive
Kirkland, Washington
U.S.A.                                    98033
- -------------------------------------     -----------------------------------
(Address of principal executive offices)  (Postal/Zip Code)

(425) 822-8992
- -------------------------------------
Registrant's telephone number, 
including area code

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the registrant was
required to file such reports), and (2) has been subject to filing requirements
for the past 90 days. Yes     No X
                          ---   ---

Indicate the number of shares outstanding of each of the issuer's classes of
common stock, as of the latest practicable date.

Common shares outstanding as of August 7, 1998 was 150,865,079, including
1,924,816 shares which are owned by a wholly owned subsidiary of the Company and
which may not be voted and are not considered outstanding for earnings per share
calculations.

- -------------------------------------------------------------------------------
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<PAGE>

                                        INDEX

<TABLE>
<CAPTION>
                                                                  Page
                                                                  ----
<S>                                                               <C>
PART I - FINANCIAL INFORMATION                                        3

Item 1.   Consolidated Financial Statements of Royal Oak Mines 
          Inc. and Subsidiaries (All statements are unaudited 
          except for the December 31, 1997 Consolidated Balance 
          Sheet, which has been audited.)

          Consolidated Balance Sheets - June 30, 1998 and 
          December 31, 1997                                           4

          Consolidated Statements of Income - Three and Six 
          Months Ended June 30, 1998 and 1997                         5

          Consolidated Statements of Cash Flow - Three and Six 
          Months Ended June 30, 1998 and 1997                         6

          Notes to Consolidated Financial Statements (unaudited)      7

Item 2.   Management's Discussion and Analysis of Financial 
          Condition and Results of Operations                         15


PART II - OTHER INFORMATION                                           20

Item 1.   Legal Proceedings                                           20

Item 4.   Submission of Matters to a Vote of Security Holders         21

Item 6.   Exhibits and Reports on Form 8-K                            21

Signatures                                                            23
</TABLE>

In this Report, unless otherwise indicated, all dollar amounts are expressed in
Canadian dollars.

                                     2

<PAGE>

PART I - FINANCIAL INFORMATION

ITEM 1.   CONSOLIDATED FINANCIAL STATEMENTS

All tabular amounts are in thousands of Canadian dollars, except as indicated.

                                     3

<PAGE>

                         Royal Oak Mines Inc.
                     Consolidated Balance Sheets
                     (unaudited - Cdn$ 000's)

<TABLE>
<CAPTION>
                                                                       June 30    December 31
                                                                          1998           1997
                                                                                    (audited)
                                                                     ---------    -----------
<S>                                                                  <C>          <C>
 ASSETS
 Current Assets
             Cash and cash equivalents                               $  16,423      $     568
             Marketable securities                                         560          9,875
             Receivables                                                 8,891         30,923
             Inventories (Note 4)                                       15,447         21,120
             Prepaid expenses                                            4,933          3,967
                                                                     ---------      ---------
                   Total Current Assets                                 46,254         66,453
 Property, Plant and Equipment, net                                    787,740        730,314
 Long-Term Investments                                                  12,424         12,145
 Reclamation and Other Deposits                                         14,346         14,332
 Deferred Charges and Other Assets (Note 5)                             43,112         20,142
                                                                     ---------      ---------
 TOTAL ASSETS                                                         $903,876      $ 843,386
                                                                     ---------      ---------
                                                                     ---------      ---------


 LIABILITIES
 Current Liabilities
             Accounts payable                                         $ 31,277      $ 123,586
             Accrued payroll costs                                       3,087          2,599
             Deferred revenue                                           12,865         20,085
             Obligation under commodity contracts (Note 6)              19,203             --
             Capital leases                                              5,588          4,531
             Taxes payable                                               1,207          1,723
             Long-term debt interest payable                            11,437         10,326
             Accrued unrealized loss on derivatives                      2,454         21,327
             Other current liabilities                                   7,682          9,135
                                                                     ---------      ---------

                  Total Current Liabilities                             94,800        193,312
 Deferred Revenue                                                       14,515         23,330
 Other Liabilities (Note 6)                                             63,272         57,427
 Long-Term Debt (Note 7)                                               426,764        250,338
 Deferred Income Taxes                                                   2,532          2,532
 Minority Interest in Subsidiary Companies                                  22             69
                                                                     ---------      ---------
 TOTAL LIABILITIES                                                     601,905        527,008
                                                                     ---------      ---------


 SHAREHOLDERS' EQUITY                                                                                                
 Share Capital (Note 8)                                                                                              
                 Authorized - unlimited                                                                              
                 Outstanding - 148,940,263 (Dec. 31,
                 1997 - 138,940,263)                                   397,375        379,040
 Deficit                                                               (95,404)       (62,662)
                                                                     ---------      ---------
 TOTAL SHAREHOLDERS' EQUITY                                            301,971        316,378
                                                                     ---------      ---------
 TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY                          $ 903,876      $ 843,386
                                                                     ---------      ---------
                                                                     ---------      ---------
</TABLE>
The accompanying notes are an integral part of the Consolidated Financial 
Statements.

                                     4

<PAGE>

                         Royal Oak Mines Inc.
               Consolidated Statements of Income (Loss)
           (unaudited - Cdn$ 000's except per share amounts)

<TABLE>
<CAPTION>
                                                                Three months ended        Six months ended
                                                                           June 30                 June 30
                                                              --------------------    --------------------
                                                                  1998        1997        1998        1997
                                                              --------    --------    --------    --------
<S>                                                           <C>         <C>         <C>         <C>
REVENUE                                                        $22,621     $58,872    $ 45,050    $106,846
                                                              --------    --------    --------    --------
EXPENSES
          Operating                                             17,016      50,930      35,247      93,908
          Care and maintenance                                     974          76       2,311         150
          Royalties and marketing                                  312         447         603         871
          Administrative and corporate                           2,214       3,544       4,460       6,196
          Depreciation and amortization                          6,711       5,925      10,715      11,478
          Reclamation                                              584       1,246       1,168       2,376
          Exploration and other                                    472       1,319         919       2,666
          Provision for loss on foreign currency and
             commodity contracts                                11,390       7,250       3,496      10,258
                                                              --------    --------    --------    --------
          Total operating expenses                              39,673      70,737      58,919     127,903
                                                              --------    --------    --------    --------
OPERATING LOSS                                                 (17,052)    (11,865)    (13,869)    (21,057)

OTHER INCOME (EXPENSE)
          Interest and other income (expense), net                (847)        314        (855)      2,027
          Interest expense                                        (346)        (69)       (643)       (187)
          Long-term debt interest                              (10,400)     (6,503)    (18,608)    (12,847)
          Interest capitalized                                   9,977       5,544      18,185       9,964
          Foreign currency translation loss on long-term debt     (964)        490      (1,256)     (2,048)
          Write-off of financing costs                         (15,011)         --     (15,011)         --
          Write-down of mine assets                                 --     (39,700)         --     (39,700)
                                                              --------    --------    --------    --------
LOSS BEFORE UNDERNOTED                                         (34,643)    (51,789)    (32,057)    (63,848)

          Income and mining taxes - current                       (421)       (313)       (841)       (639)
          Income and mining taxes - deferred                        --          --          --       4,221
          Minority interest                                         16          (5)         47          31
          Equity in income of associated companies                  46          18         109          33
                                                              --------    --------    --------    --------
NET LOSS                                                       (35,002)    (52,089)    (32,742)    (60,202)

RETAINED EARNINGS (DEFICIT)- BEGINNING OF PERIOD               (60,402)     64,440     (62,662)     72,553
                                                              --------    --------    --------    --------
RETAINED EARNINGS (DEFICIT) - END OF PERIOD                   ($95,404)    $12,351  $  (95,404)   $ 12,351
                                                              --------    --------    --------    --------
                                                              --------    --------    --------    --------

LOSS PER SHARE                                                $  (0.25)   $  (0.38)   $  (0.24)   $  (0.43)
                                                              --------    --------    --------    --------
                                                              --------    --------    --------    --------

Weighted average number of common shares outstanding (000's)   138,940     138,884     138,940     138,864
                                                              --------    --------    --------    --------
                                                              --------    --------    --------    --------
</TABLE>

The accompanying notes are an integral part of the Consolidated Financial
Statements.


                                      5

<PAGE>

                                Royal Oak Mines Inc.
                        Consolidated Statements of Cash Flow
                             (unaudited - Cdn$  000's)
<TABLE>
<CAPTION>
                                                                     Three months ended       Six months ended
                                                                                June 30                June 30
                                                                 ----------------------  ----------------------
                                                                       1998        1997        1998        1997
                                                                 ----------  ----------  ----------  ----------
<S>                                                              <C>         <C>         <C>         <C>
CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES
   Net loss for the period                                       $  (35,002) $  (52,089) $  (32,742) $  (60,202)
   Items not affecting cash:
        Depreciation and amortization                                 6,711       5,925      10,715      11,478
        Amortization of deferred finance costs                          684         233       1,109         472 
        Reclamation                                                     584       1,246       1,168       2,376 
        Deferred income tax                                              --          --          --      (4,221)
        Provision for unrealized loss on foreign currency and
          commodity contracts                                        13,575       7,357       7,036       9,875 
        Foreign currency translation on senior subordinated notes       964        (490)      1,256       2,048 
        Write-down of mine assets                                        --      39,700          --      39,700 
        Write-off of deferred finance costs                          15,011          --      15,011          --
        Deferred charges and other                                      (46)        223        (142)         91 
                                                                 ----------  ----------  ----------  ----------
Cash flow                                                             2,481       2,105       3,411       1,617 
Net change in other operating items (Note 9)                        (45,965)     (7,713)    (82,162)    (73,476)
                                                                 ----------  ----------  ----------  ----------
Net cash used in operating activities                               (43,484)     (5,608)    (78,751)    (71,859)
                                                                 ----------  ----------  ----------  ----------

CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES
   Issue of share capital                                            18,335          65      18,335         177 
   Capital lease obligation                                            (473)       (249)       (947)       (527)
   Issue of long-term debt                                          169,050          --     233,109          --
   Retirement of long-term debt                                     (64,232)         --     (64,232)         --
   Issue costs of long-term debt                                    (25,775)         --     (31,341)         --
   Deferred credits and other                                            --         (18)         --         (18)
                                                                 ----------  ----------  ----------  ----------
Net cash provided by (used in) financing activities                  96,905        (202)    154,924        (368)
                                                                 ----------  ----------  ----------  ----------

CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES
   Increase in long-term investments                                     --     (17,846)         --     (17,846)
   Proceeds from asset sales                                          8,606          --      12,873          -- 
   Investment in other capital assets, net                          (43,700)    (63,248)    (80,146)   (109,523)
   B. C. Government assistance                                           --      47,822          --      78,787 
   Investment in exploration and non-producing properties, net         (540)     (2,377)       (814)     (4,068)
   Change in other assets                                            (1,427)        (48)     (1,546)       (635)
                                                                 ----------  ----------  ----------  ----------
Net cash used in investing activities                               (37,061)    (35,697)    (69,633)    (53,285)
                                                                 ----------  ----------  ----------  ----------

INCREASE (DECREASE) IN CASH AND MARKETABLE 
     SECURITIES DURING THE PERIOD                                    16,360     (41,507)      6,540    (125,512)
CASH AND MARKETABLE SECURITIES AT BEGINNING OF PERIOD                   623     114,351      10,443     198,356 
                                                                 ----------  ----------  ----------  ----------
CASH AND MARKETABLE SECURITIES AT END OF PERIOD                   $  16,983  $   72,844  $   16,983  $   72,844 
                                                                 ----------  ----------  ----------  ----------
                                                                 ----------  ----------  ----------  ----------
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
     Cash paid during the period for:
                Interest                                          $   2,716  $       69  $   16,726  $   13,386 
                Income taxes                                      $      --  $       25  $       --  $       65 
</TABLE>

The accompanying notes are an integral part of the Consolidated Financial
Statements

                                              6

<PAGE>

                     NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                    (unaudited)
     (tabular amounts in thousands of Canadian dollars unless otherwise stated)


1.  GOING CONCERN

These financial statements have been prepared on the basis of accounting
principles applicable to a "going concern", which assume that the Company will
continue in operation for at least one year and will be able to realize its
assets and discharge its liabilities in the normal course of operations.

Several conditions and events cast substantial doubt about the Company's ability
to continue as a "going concern".  The company has experienced a liquidity
problem, has a working capital deficiency as at June 30, 1998 and incurred
substantial losses in the first six months of 1998 and in 1997.  In addition,
the Company recently completed a substantial capital project, the construction
of its Kemess Mine.  Furthermore, substantial payments will be required to
settle liabilities arising from the closure of certain commodity and currency
contracts.

In June, 1998 the Company completed the placement of US$120 million Senior 
Secured Notes to Trilon Financial Corporation and Northgate Exploration 
Limited.  This brings the Company's aggregate outstanding long term secured 
debt at June 30, 1998 to approximately US$315 million (Cdn$464 million) based 
on the exchange rate as of June 30, 1998.  Such amount does not include 
capital leases of approximately $23 million.  Such secured indebtedness and 
capital leases in the aggregate represent 61.7% of the total capitalization 
of the company.

The Company's future viability is dependent upon its ability to bring the Kemess
Mine into an efficient operating state, maintain satisfactory credit
relationships with its suppliers and achieve and maintain profitable operations.
Successful operations in the future are also dependent upon various external
factors, the most significant of which are the prices of the commodities it
produces, gold and copper, and the $US/$Cdn exchange rate.

Based upon current commodity prices, exchange rates and forecast production
levels, management expects to have sufficient cash to meet interest payments and
other obligations arising during the balance of 1998.  However, at such price
levels the Company's ability to meet interest payments and scheduled principal
repayments of secured indebtedness occurring after 1998 will depend upon the
Company's ability to maintain its costs of production at or below current
levels, the performance of the Company's operating mines at or above forecast
production, and its ability to refinance principal repayments as they fall due.

Under the terms of the agreements which govern the Company's currently existing
secured indebtedness, a default under any of such agreements may lead to a cross
default under all of such agreements, with the result that, if there is a
default under any such agreements, all long-term secured debt together with
interest accrued but unpaid thereon may thereupon become due and payable.

These financial statements do not reflect adjustments that would be necessary if
the Company were unable to continue as a "going concern".  While management
believes that the actions already taken or planned, as described above, will
mitigate the adverse conditions and events which raise doubts about the "going
concern" assumption used in preparing these financial statements, there can be
no assurance that these actions will be successful.

If the Company were unable to continue as a "going concern", then substantial
adjustments would be necessary to the carrying values of assets and liabilities,
the reported revenues and expenses, and the balance sheet classifications used.


2.  INTERIM FINANCIAL STATEMENTS ACCOUNTING POLICIES

The accompanying unaudited interim consolidated financial statements have been
prepared in accordance with Canadian generally accepted accounting principles
("Canadian GAAP") which, in the case of Royal Oak Mines Inc. (the "Company"),
differ in certain material respects from United States generally accepted
accounting principles ("U.S. GAAP"), as described in Note 10.  Also, such
statements do not include all of the disclosures required by generally accepted
accounting principles for annual statements.  In the opinion of management all
adjustments considered necessary for fair presentation have been included in
these statements.  Operating results for the three and six months ended June 30,
1998, are not necessarily indicative of the results that may be expected for the
full year ending December 31, 1998.  For further information, see the Company's
Consolidated Financial Statements, including the accounting policies and notes
thereto, included in the Annual Report on Form 10-K for the year ended December
31, 1997.

                                    7

<PAGE>

The calculations of net earnings per share are based upon the weighted average
number of common shares of the Company outstanding during each period (except as
set forth in Note 8(a)).  When outstanding convertible instruments materially
dilute earnings per share, fully diluted earnings per share are disclosed.


3.   PRESENTATION

Certain amounts for 1997 have been reclassified to conform with the current
year's presentation.


4.   INVENTORIES
<TABLE>
<CAPTION>
                                                            June 30    December 31
                                                               1998           1997
                                                         ----------    -----------
<S>                                                      <C>           <C>
                                                                                --
         Bullion and copper concentrate in process         $  5,913       $  6,751
         Stores and operating supplies                        9,534         14,369
                                                           --------       --------
         Inventories                                       $ 15,447       $ 21,120
                                                           --------       --------
                                                           --------       --------
</TABLE>


5.   DEFERRED CHARGES AND OTHER ASSETS

<TABLE>
<CAPTION>
                                                                                    June 30     December 31
                                                                                       1998            1997
                                                                                    -------     -----------
<S>                                                                                 <C>         <C>
         Deferred finance costs on long-term debt                                   $40,502         $ 9,041
         Amortization of deferred finance costs                                     (17,371)         (1,251)
         Deferred foreign exchange loss on long-term foreign debt                    18,207          10,658
         Amortization of foreign exchange loss on long-term foreign debt             (1,277)           (364)
         Other assets                                                                 3,051           2,058
                                                                                    -------         -------
                                                                                    $43,112         $20,142
                                                                                    -------         -------
                                                                                    -------         -------
</TABLE>


6.    OTHER LIABILITIES

<TABLE>
<CAPTION>
                                                                      June 30  December 31
                                                                         1998         1997
                                                                     --------  -----------
<S>                                                                  <C>       <C>
         Provision for loss on foreign currency contracts             $    --      $12,497
         Accrued reclamation and provision for closure costs           25,827       24,682
         Capital leases                                                17,831       19,835
         Obligation under commodity contracts                          19,203           --
         Other                                                            411          413
                                                                      -------      -------
                                                                      $63,272      $57,427
                                                                      -------      -------
                                                                      -------      -------
</TABLE>


DERIVATIVE INDEBTEDNESS
The Company entered into a number of agreements with Bankers Trust Company
("Bankers"), Macquarie Bank Limited ("Macquarie"), and The Bank of Nova Scotia
("BNS") (collectively, the "Hedging Parties") each dated June 22, 1998.  As of
June 30, 1998, the Company was indebted to Bankers and BNS, pursuant to
repayment agreements (the "Repayment Agreements"), in the aggregate amount of
approximately US$25 million, including accrued interest.  The Company agreed to
pay to Bankers and BNS 

                                      8

<PAGE>

US$500,000 and US$100,000, respectively, on December 1, 1998 and agreed to 
pay the balance, together with interest at the rate of 12% per annum, in 
twelve monthly payments commencing in January 1999. 

The Company also entered into an agreement with Macquarie (the "Macquarie
Agreement"), pursuant to which the Company agreed to secure the payment of
certain present and future indebtedness under hedging contracts between the
Company and Macquarie to the extent that any such indebtedness becomes due.

In connection with the Repayment Agreements and the Macquarie Agreement, the
Company entered into a trust indenture (the "Hedging Indenture") dated as of
June 22, 1998 with Montreal Trust Company of Canada (the "Hedging Trustee"),
pursuant to which the Company and certain subsidiaries granted, and may in the
future grant, security in the assets, property and undertaking of the Company
and such subsidiaries to the Hedging Trustee up to a maximum amount of US$50
million for the benefit of the Hedging Parties and, subject to certain
conditions, other providers of credit in respect to hedging and related
activities of the Company.  The security constituted by the Hedging Indenture
ranks junior in priority to the security held by the Debentureholders.  The
Hedging Indenture provides for the issuance and pledging of three bonds (the
"Bonds") by the Company in favor of the Hedging Parties as security for the
indebtedness owed, and, in the case of Macquarie, certain indebtedness which may
become owing by the Company, to the Hedging Parties.  The Bonds issued to
Bankers, BNS, and Macquarie, each dated June 22, 1998, are in the principal
amounts of US$21 million, US$5 million and US$15 million, respectively.  The
Company may in the future issue bonds under the Hedging Indenture to secure any
future indebtedness under agreements which may be entered into by the Company in
respect to hedging and related activities of the Company, subject to the maximum
amount specified above.


7.    LONG-TERM DEBT

<TABLE>
<CAPTION>
                                                                        June 30    December 31
                                                                           1998           1997
                                                                       --------    -----------
<S>                                                                    <C>         <C>
        Secured Long-Term Debt
           US$80 million Series A Senior Secured Debentures            $117,728       $     --
           US$35 million Series B Senior Secured Debentures              51,506             --
           US$175 million Secured 12.75% Senior Subordinated Notes      257,530        250,338
                                                                       ---------      --------
                                                                       $426,764       $250,338
                                                                       ---------      --------
                                                                       ---------      --------
</TABLE>


SENIOR SECURED DEBENTURES (SERIES A AND B)

The Company entered into a securities purchase agreement with Trilon Financial
Corporation ("Trilon") on April 17, 1998 providing for the issuance by the
Company to Trilon and Northgate Exploration Limited of senior secured debentures
in the aggregate principal amount of US$120 million (the "Senior Debentures"). 
The initial draw-down of US$115 million under the Senior Debentures occurred on
June 24, 1998 and the balance may be drawn down, subject to certain conditions
being fulfilled, on or before August 15, 1998.  The Senior Debentures mature
June 22, 2000 and bear interest at a rate of 30 day LIBOR plus 6% per annum. 
Interest payments commenced July 31, 1998 and are payable monthly thereafter.

The Company issued the Senior Debentures for the following purposes: (i) to
repurchase and retire the senior secured debentures issued by the Company in
January 1998 in the principal amounts of $19.5 million and US$30.7 million and
pay accrued interest thereon; (ii) to pay the Company's past due accounts
payable attributable to construction of the Kemess Mine; and (iii) to provide
the Company with working capital.

The Senior Debentures are secured by a first fixed and floating charge on all of
the present and after acquired property and assets of the Company and certain of
its subsidiaries, subject to mutually agreed permitted encumbrances and are
redeemable, in whole or in part, in aggregate minimum amounts of US$5 million at
any time at 101% of the principal amount being repaid plus interest and all
other amounts owing thereon.  Under the terms of the Senior Debentures, the
holders of the Senior Debentures (the "Debentureholders") can require the
Company to transfer ownership of the Kemess South Mine to a wholly-owned
subsidiary of the Company.  The Company received a formal request from the
Debentureholders in early July 1998 requiring the transfer of the Kemess South
Mine to a wholly-owned subsidiary of the Company.  The Company has identified
certain potentially adverse tax consequences which may arise from such a
transfer.  Consequently, the Company has asked the Debentureholders to
reconsider their request and discussions between the Company and the
Debentureholders are continuing.

                                    9

<PAGE>

The fees payable by the Company to the Debentureholders consist of the
following:

1.   a non-refundable up-front fee of US$2,400,000, which was paid on closing;
2.   a non-refundable fee equal to 2% of the outstanding principal and accrued
     interest payable to the Debentureholders which exceeds the following
     threshold levels as at the following dates, being, (a) US$80 million on
     February 15, 1999, and (b) US$50 million on October 15, 1999; and 
3.   a royalty payable to Trilon of up to a maximum of 1.62% (the "Royalty") of
     the gross revenues of the Kemess South Mine to be accrued but unpaid for
     two years and thereafter payable quarterly.  The accrued Royalty will bear
     compound interest at the three-month LIBOR rate plus 1% per annum.  The
     Royalty is to be prorated in the event that the Senior Debentures are
     redeemed prior to maturity based on the amount redeemed and the timing of
     such redemption.  The Company may acquire the Royalty on June 22, 2003 at
     the then fair market value, payable in cash on such closing.

SUBORDINATED NOTES

In order to obtain the required consent to the issuance of the Senior
Debentures, the Company and the holders (the "Noteholders") of the Company's
US$175 million senior subordinated notes due 2006 (the "Notes") agreed to
certain amendments and supplements to the Indenture dated as of August 12, 1996
among the Company, Kemess Mines Inc. and Mellon Bank, F.S.B., as trustee, as
amended by the First Supplemental Indenture dated as of December 31, 1997 and
the Second Supplemental Indenture dated as of January 31, 1998 between the
Company and Chase Manhattan Trust Company, National Association ("Chase"), as
successor trustee to Mellon Bank, F.S.B. (as so supplemented and amended, the
"Indenture").  The Indenture was amended and supplemented by:

1)   the Third Supplemental Indenture dated as of May 19, 1998 which reduces the
     length of time required to set a record date for determining the
     Noteholders who are entitled to consent to any amendment or supplement of
     the Indenture or any waiver pursuant thereto from 30 days to 3 days prior
     to the first solicitation of such consent; 

2)   the Fourth Supplemental Indenture dated as of June 22, 1998 which has the
     effect of:  (a) increasing the interest rate payable on the Notes by 175
     basis points to 12.75% per annum effective May 30, 1998; (b) increasing the
     limits on aggregate Permitted Indebtedness (as defined in the Indenture) to
     US$120 million (to permit the issuance of the Senior Debentures) and, to
     the extent the Senior Debentures are repaid, establishing a working capital
     facility; (c) allowing the transfer in the future of the Kemess South Mine
     to a new wholly-owned Subsidiary (as defined in the Indenture); (d)
     allowing such Subsidiary to guarantee repayment of certain Senior
     Indebtedness (as defined in the Indenture) and the Notes; (e) providing for
     the granting of collateral security by the Company and its subsidiaries to
     secure the Notes; and (f) allowing the Company to redeem the Notes at a
     purchase price of 105.5% of the principal amount of the Notes plus all
     accrued and unpaid interest at any time before August 15, 2001; and

3)   the Fifth Supplemental Indenture dated as of June 22, 1998 which provides
     that in the event of certain bankruptcy or other similar proceedings in
     which the Debentureholders and the Noteholders may be placed in the same
     class of creditors, Noteholders who consent to the Fifth Supplemental
     Indenture have agreed for the benefit of themselves and their assignees to:
     (a) take all steps reasonably within their control or power to place the
     Noteholders in a different class of creditors than the Debentureholders;
     and (b) assign to the Debentureholders their voting rights in any such
     proceedings to enable the Debentureholders to vote against and defeat any
     restructuring plan presented to any class of creditors which includes both
     the Debentureholders and the Noteholders.

Pursuant to the Fourth Supplemental Indenture the Company and certain of its
subsidiaries granted, and may in the future grant, security in favor of Chase,
as trustee, and CIBC Mellon Trust Company ("CIBC Mellon"), as collateral agent,
in the assets, properties and undertaking of the Company and such subsidiaries
to secure repayment of principal and interest owing on the Notes and all other
present and future amounts owing under the Indenture.  The Fourth Supplemental
Indenture included an Inter-Creditor Agreement between, among others, the
Debentureholders, Chase, as trustee, and CIBC Mellon, as collateral agent,
pursuant to which the security of the Debentureholders was confirmed as having
priority over and ranking senior to the security held by Chase and CIBC Mellon
on behalf of the Noteholders.  Pursuant to the Fourth Supplemental Indenture,
Chase, as trustee, and CIBC Mellon, as collateral agent, acknowledged to the
Company, the Hedging Trustee and the Hedging Parties that the security
constituted by the Hedging Indenture ranks in priority to the security held by
Chase and CIBC Mellon on behalf of the Noteholders.

Noteholders who executed consents to the Third, Fourth and Fifth Supplemental
Indentures were entitled to receive, pro rata based on the percentage of
principal amount of Notes held, a consent fee equal to an aggregate of 10
million Common Shares of the Company on a private placement basis at a deemed
issue price of US$1.125 per common share.  The Third and Fourth Supplemental
Indentures are binding on all Noteholders while the Fifth Supplemental Indenture
is binding only on the Noteholders who provided their consent to such
supplemental indenture.  Approximately 99% of Noteholders consented to the Fifth
Supplemental Indenture.

                                       10

<PAGE>

8. SHARE CAPITAL

(a) Changes in capital
<TABLE>
<CAPTION>
                                                                           Number of
                                                                              shares         Amount
                                                                         -----------       --------
<S>                                                                      <C>               <C>
 Balance, December 31, 1996                                              140,770,079       $387,667
 Issued for share purchase options                                            65,000            176
                                                                         -----------       --------
 Balance, June 30, 1997 issued and outstanding                           140,835,079        387,843
 Company shares held by Witteck Development Inc.                         (1,924,816)        (8,854)
                                                                         -----------       --------
 Balance, June 30, 1997 for financial reporting purposes                 138,910,263       $378,989
                                                                         -----------       --------
                                                                         -----------       --------
 Balance, December 31, 1997                                              140,865,079       $387,894
 Issued for bondholder consent                                            10,000,000         13,000
 Special Warrants (see note 8(b)                                                  --          5,335
                                                                         -----------       --------
 Balance, June 30, 1998 issued and outstanding                           150,865,079        406,229
 Company shares held by Witteck Development Inc.                         (1,924,816)        (8,854)
                                                                         -----------       --------
 Balance, June 30, 1998 for financial reporting purposes                 148,940,263       $397,375
                                                                         -----------       --------
                                                                         -----------       --------
</TABLE>

(b) Special Warrants

On June 24, 1998, the Company issued and sold to certain investors by way of
private placement an aggregate of 4,103,663 Special Warrants convertible into an
aggregate of 4,103,663 Common Shares for aggregate consideration of
$5,334,761.90.  The Special Warrants were sold pursuant to prospectus exemptions
under applicable legislation.  The 4,103,663 Special Warrants were issued to
certain creditors of the Company in full payment and satisfaction of an
aggregate $5,334,761.90 of indebtedness (the "Indebtedness") of the Company in
favor of such creditors.  The Indebtedness related principally to overdue
accounts payable in connection with the construction of the Kemess South Mine.

The Special Warrants were issued under the terms of a trust indenture (the
"Warrant Indenture") dated as of June 24, 1998 between the Company and Montreal
Trust Company of Canada, as trustee (the "Trustee").  Each Special Warrant
entitles the holder thereof to acquire one Common Share, without payment of
additional consideration, prior to 2:00 p.m. (Vancouver time) on the earlier of
(i) the sixth business day after a receipt for the Prospectus is issued by the
securities regulatory authority in each of Alberta, British Columbia,
Newfoundland and Ontario; and (ii) December 31, 1998 (the "Expiry Date").  Any
Special Warrants which remain unexercised at the Expiry Date will be
automatically exercised on the Expiry Date.  If the securities regulatory
authority in each of Alberta, British Columbia, Newfoundland and Ontario has not
issued a receipt for this prospectus on or before 2:00 p.m. (Vancouver time) on
September 21, 1998, the holders of Special Warrants shall be entitled to deliver
their Special Warrants certificates to the Trustee, and to receive 1.1 Common
Shares, without payment of additional consideration, for each Special Warrant
held.

                                      11

<PAGE>

9.   NET CHANGE IN OTHER OPERATING ITEMS 

<TABLE>
<CAPTION>
                                            Three months ended June 30    Six months ended June 30
                                          -----------------------------  --------------------------
                                                     1998          1997        1998         1997
                                                ---------     ---------   ---------    ---------
<S>                                             <C>           <C>         <C>          <C>
 Cash provided by (used in):
  Receivables                                   $   5,403     $ (16,086)  $  22,032    $ (49,452)
  Inventories                                         757        10,680       5,673      (10,441)
  Prepaid expenses                                   (410)        4,449        (966)      (1,833)
  Accounts payable, accrued payroll and 
      other current liabilities                   (39,541)      (10,091)    (92,350)      (7,817)
 Deferred revenue                                 (11,818)       (1,661)    (16,035)      (2,845)
 Income and other taxes payable                      (356)          338        (516)         922
 Long-term reclamation reclassified  
      to current period                                --         4,658          --       (2,010)
                                                ---------     ---------   ---------    ---------
 Net change in other operating items            $ (45,965)    $  (7,713)  $ (82,162)   $ (73,476)
                                                ---------     ---------   ---------    ---------
                                                ---------     ---------   ---------    ---------
</TABLE>

10.   RECONCILIATION TO UNITED STATES GENERALLY ACCEPTED ACCOUNTING PRINCIPLES

Reconciliation of net income in accordance with Canadian GAAP to net income in
accordance with U.S. GAAP is as follows:

<TABLE>
<CAPTION>
                                                                Three months ended        Six months ended
                                                                           June 30                 June 30
                                                              --------------------    --------------------
                                                                  1998        1997        1998        1997
                                                              --------    --------    --------    --------
<S>                                                           <C>         <C>         <C>         <C>
Net income (loss) in accordance with Canadian GAAP            $(35,002)   $(52,089)   $(32,742)   $(60,202)

Adjustments
          Depreciation and amortization                         (4,985)      3,133      (9,214)      2,355
          Foreign currency translation loss on long-
          term debt                                            (11,107)         --      (6,636)         --
                                                              --------    --------    --------    --------
          Net income in accordance with U.S. GAAP             $(51,094)   $(48,956)   $(48,592)   $(57,847)
                                                              --------    --------    --------    --------
                                                              --------    --------    --------    --------


Earnings (loss) per share in accordance with U.S. GAAP:
Basic earnings (loss)                                         $  (0.37)   $  (0.35)   $  (0.35)   $  (0.42)
Diluted earnings (loss)                                       $  (0.37)   $  (0.35)   $  (0.35)   $  (0.42)
</TABLE>

The effects on the balance sheets of the Company at June 30, prepared in
accordance with U.S. GAAP, are:

<TABLE>
<CAPTION>
                                                           June 30       June 30
                                                         ---------     ---------
                                                              1998          1997
                                                         ---------     ---------
<S>                                                      <C>           <C>
 Increase (decrease):
 Property, plant and equipment                            $(11,417)     $  7,077
 Prepaid expenses (pension asset)                         $ (1,175)     $   (552)
 Long-term investment in equity securities                      --      $(17,701)
 Deferred charges                                         $(16,930)           --
 Deferred income taxes                                    $ 19,377      $ 19,377
 Provision for unrealized loss on long-term                     --      $(17,701)
 investments (contra-equity account)
 Retained earnings                                        $(48,899)     $(12,852)
</TABLE>


                                              12

<PAGE>

During the year, the Company adopted Statement of Financial Accounting 
Standards No. 130, Reporting Comprehensive Income.  This statement requires 
the reporting of comprehensive income in addition to net income from 
operations. Comprehensive income is a more inclusive financial reporting 
methodology that includes disclosure of certain financial information that 
historically has not been recognized in the calculation of net income.  The 
Company has no material comprehensive income.

Under U.S. GAAP, depreciation and amortization are calculated on the 
unit-of-production method based upon proven and probable reserves, whereas 
under Canadian GAAP, total mineral inventory may be used in the calculations.

Under U.S. GAAP, foreign exchange gains and losses arising from the 
translation of long-term foreign debt are recognized in income in the period 
when exchange rates change, whereas under Canadian GAAP, such foreign 
exchange gains and losses are deferred and amortized on a pro rata basis over 
the remaining life of the debt.

Statement of Financial Accounting Standards No. 109 requires that a deferred 
tax liability be recognized for differences between the assigned values and 
the tax bases of the assets and liabilities recognized in a business 
combination involving a purchase of stock.  Canadian GAAP does not require 
similar recognition.  Accordingly, during the three months ended March 31, 
1998, a difference between U.S. GAAP and Canadian GAAP arose for the deferred 
tax liabilities associated with the excess of the assigned values and the tax 
bases of assets acquired in the acquisition of Geddes Resources Limited and 
Consolidated Professor Mines Limited.  The effect of these differences is to 
increase property, plant and equipment and deferred income taxes by $21.0 
million as of June 30, 1998.

Statement of Financial Accounting Standards No. 115 (SFAS 115), Accounting 
for Certain Investments in Debt and Equity Securities, requires that 
marketable securities be put into one of two categories: trading securities 
(securities which are bought and held principally for the purpose of selling 
them in the near term) or available-for-sale securities (investments not 
classified as trading securities).  SFAS 115 requires that unrealized gains 
and losses on available-for-sale securities should be excluded from earnings 
and reported as a net amount in a separate component of shareholders= equity 
until realized. Canadian GAAP requires no recognition or reporting of 
unrealized losses unless the loss is considered permanent.

The Company implemented SFAS No. 128, "Earnings per Share," effective for its 
December 31, 1997 financial statements.  Accordingly, earnings per share data 
have been restated for all periods presented.  This standard requires the 
presentation of both basic and diluted earnings per share amounts.  Basic 
earnings per share is calculated by dividing net income attributable to 
common shareholders by the weighted average number of common shares 
outstanding. Diluted earnings per share is computed similarly, but also gives 
effect to the impact convertible securities, such as common stock options and 
warrants, if dilutive, would have on net income and average common shares 
outstanding if converted at the beginning of the year.

                                   13
<PAGE>

<TABLE>
<CAPTION>
                                                                                    Three months ended           Six months ended
                                                                                ----------------------     ----------------------
 COMPUTATIONS OF EARNINGS PER COMMON SHARE                                       June 30       June 30      June 30       June 30
                                                                                    1998          1997         1998          1997
                                                                                --------      --------     --------      --------
<S>                                                                             <C>           <C>          <C>           <C>
 BASIC INCOME (LOSS) PER SHARE ACCORDING TO U.S. GAAP
   Net income (loss) in accordance with U.S. GAAP                               $(51,094)     $(48,956)    $(48,592)     $(57,847)
                                                                                --------      --------     --------      --------
                                                                                --------      --------     --------      --------
   Weighted average number of shares outstanding (000's)                         138,940       138,884      138,940       138,864
                                                                                --------      --------     --------      --------
                                                                                --------      --------     --------      --------

   Basic income (loss) per share                                                $  (0.37)     $  (0.35)    $  (0.35)     $  (0.42)
                                                                                --------      --------     --------      --------
                                                                                --------      --------     --------      --------

 DILUTED INCOME (LOSS) PER SHARE ACCORDING TO U.S. GAAP
   Net income (loss) in accordance with U.S. GAAP                               $(51,094)     $(48,956)    $(48,592)     $(57,847)
                                                                                --------      --------     --------      --------
                                                                                --------      --------     --------      --------

   Shares
   Weighted average number of shares outstanding (000's)                         138,940       138,884      138,940       138,864
       Assuming exercise of stock options reduced by the number of shares
        which could have been purchased with the proceeds from exercise
        of such options                                                          --                 --           49            --
                                                                                --------      --------     --------      --------
   Weighted average number of shares outstanding (000's), as adjusted            138,940       138,884      138,989       138,864
                                                                                --------      --------     --------      --------
                                                                                --------      --------     --------      --------

   Diluted income (loss) per share                                              $ (0.37)      $  (0.35)    $  (0.35)     $  (0.42)
                                                                                --------      --------     --------      --------
                                                                                --------      --------     --------      --------
</TABLE>

All options and warrants outstanding at June 1998 and March and June 1997 were
considered antidilutive due to the net losses.


11.   SHAREHOLDER RIGHTS PLAN

On February 10, 1998, the Board of Directors adopted, subject to regulatory and
shareholder approvals, a Shareholder Rights Plan (the "Rights Plan"), the terms
of which are set forth in a Shareholder Rights Plan Agreement dated as of
February 25, 1998 between the Company and Montreal Trust Company of Canada (the
"Rights Plan Agreement").  Under the Rights Plan, a right to purchase one of the
Company's common shares (the "Right") was issued for each outstanding common
share to the Company's shareholders of record on February 25, 1998.  The Rights
expire in 2002 and initially are not separate from the Company's common shares
nor are they represented by separate certificates.  However, should a triggering
event occur, as defined in the Rights Plan Agreement (including the acquisition
by a single entity of 20% or more of the Company's common shares), a holder of a
Right (other than the acquiror of 20% or more of the Company's common shares)
becomes entitled to purchase one share of the Company's common shares for each
Right at a 50% discount to the market price.  Under the Rights Plan Agreement,
purchases of common shares that are made pursuant to certain permitted bids, as
defined in the Rights Plan Agreement, do not constitute a triggering event. 
Subject to certain terms and conditions specified in the Rights Plan Agreement,
the Rights may be redeemed by the Company for a price of $0.0001 per Right.  The
Rights Plan was approved by the Shareholders at the annual meeting held June 26,
1998.

                                      14

<PAGE>

ITEM 2.   MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS.

RESULTS OF OPERATIONS 

REVENUE

Consolidated revenues for the three-month and six-month periods ended June 
30, 1998 were $22.6 million and $45.1 million, respectively.  Revenues in the 
second quarter of 1998 were 62% below the $58.9 million of revenues reported 
for the three-month period ended June 30, 1997 and 58% below the $106.8 
million of revenues reported for the six-month period ended June 30, 1997.  
Declines in revenue were attributed to lower gold production resulting from 
the late 1997 closure of the Hope Brook and Colomac mines and lower realized 
gold prices.

Gold production was 45,732 and 91,289 ounces for the three-month and six-month
periods ended June 30, 1998, respectively.  1998 gold production was 56% below
the 104,845 ounces produced for the three-month period ended June 30, 1997 and
52% below the 189,925 ounces produced for the six month period ended June 30,
1997.  The September 1997 closure of the Hope Brook Mine and December 1997
closure of the Colomac Mine were the main factors contributing to the decline in
gold production.

Gold production for the ongoing mines Pamour/Nighthawk and Giant was 45,732 
and 91,289 ounces for the three-month and six-month periods ended June 30, 
1998. This compares to 49,288 and 97,287 ounces produced during the same 
periods in 1997.  Gold production at the ongoing operations during 1998 
declined 7% or 3,556 ounces and 6% or 5,998 ounces from corresponding gold 
production in the same three- and six-month periods of 1997.  The decline in 
production at the Giant Mine was due to modification in the mine plan 
resulting from declining gold prices.

The Company commenced limited production at the Kemess Mine on May 19, 1998 when
ore was conveyed to line "A", one of two parallel circuits in the concentrator. 
On June 14, 1998 line "B" was commissioned.  As of June 30, 1998 all proceeds
from sale of concentrates during the commissioning period have been credited
against Kemess capital costs.

<TABLE>
<CAPTION>
                                               Three months ended        Six months ended
                                                          June 30                 June 30
                                                1998         1997        1998        1997
                                             -------    ---------     -------   ---------
<S>                                          <C>        <C>           <C>       <C>
Ore milled (tons)                            433,631    1,603,901     867,119   2,866,479
Average mill fees grade (oz/ton)               0.129        0.076       0.131       0.077
Gold production (ounces)
Northwest Territories - Giant Mine            21,424       22,981      43,814      45,829
                      - Colomac Mine               -       32,387           -      62,267
Ontario Division      - Pamour/Nighthawk      24,308       26,307      47,475      51,458
Newfoundland          - Hope Brook Mine            -       23,170           -      30,371

Total gold ounces produced                    45,732      104,845      91,289     189,925

Average spot gold price (US$/oz)                 300          343         297         347
Average realized price (US$/oz)                  342          406         343         405
Average cash cost (US$/oz)                       257          351         268         358
</TABLE>

EXPENSES

Operating expenses for the three months and six months ended June 30, 1998 were
$17.0 million or US $257 per ounce, and $35.2 million, or US$268 per ounce,
respectively.  This compares to $50.9 million, or US$351 per ounce, and $93.9
million, or US$358 per ounce, for the three months and six months ended June 30,
1997, respectively.  The decrease in consolidated operating costs was mainly
attributed to the closure of the high cost Colomac and Hope Brook mines, lower
production volumes at ongoing operations, and the implementation of a cost
reduction program, which reduced manpower and minimized discretionary spending. 
US dollar cash costs per ounce were also favorably impacted by the continued
weakening of the Canadian dollar in relation to the US dollar.

NORTHWEST TERRITORIES DIVISION

GIANT MINE
Gold production for the three-month period ended June 30, 1998 was 21,424 ounces
or 7% lower than the 22,981 ounces produced during the same period of 1997. 
Lower gold production was largely due to modification in the mine plan 
resulting from declining gold prices.  Mill 

                                      15

<PAGE>

throughput of 84,431 tons (1997- 97,564 tons) was 13% lower than production 
in the same period a year ago.  Mill head grade improved by 9% to 0.290 opt 
gold (1997 - 0.265 opt).  Gold recovery decreased 1% to 87.28 % (1997 - 
88.38%).  Cash costs of US$282 per ounce were 11% below the US$317 per ounce 
cash cost reported for the three-month period ended June 30, 1997.

Mining operations for the six-month period ended June 30, 1998 produced 43,814
ounces of gold (1997 - 45,829 ounces) or 4% fewer ounces than those produced in
the same period in 1997.  Mill throughput of 178,475 tons (1997 - 192,906 tons)
was 7% lower than that reported for the same period a year ago.  Head grades of
0.283 opt gold (1997 - 0.265 opt) improved 5%.  Gold recovery declined 1% to
86.40% (1997 - 87.53%).  Cash costs of US$283 per ounce were 12% below the
US$321 incurred during the six-month period ended June 30, 1997.

ONTARIO DIVISION

PAMOUR/NIGHTHAWK MINES

Gold production for the three-month period ended June 30, 1998 of 24,308 ounces
(1997 - 26,307) was 8% lower than that reported for the same period a year ago. 
Lower production was primarily related to a lower recovery rate of 77.02% (1997
- - 87.14%), which was 12% lower than that of the same period a year ago. 
Offsetting the lower recovery rates were improvements in head grade and lower
operating cash costs.  Second quarter 1998 head grades of 0.090 opt gold (1997 -
0.087 opt) showed an improvement of 3% from the same period in 1997.  Cash costs
per ounce of US$235 per ounce (1997 - US$316) were 26% lower than that reported
for the same period in 1997.

For the first six months of 1998, gold production was 47,475 ounces (1997 -
51,458 ounces), a decrease of 8% from production reported for the same period a
year ago.  Lower gold production was attributed to the lower recovery rate of
75.60% (1997 - 86.50%), a decrease of 13% from first half 1997 recovery rates. 
Lower gold production volumes associated with recovery rates were, however,
partially offset by higher head grades and increased mill throughput.  Head
grades of 0.091 opt gold (1997 - 0.088 opt) showed an improvement of 3% and mill
throughput of 688,644 tons (1997 - 677,889 tons) increased 2% over results
reported for the same period of 1997.  Operating cash costs for this period of
US$255 per ounce decreased 21% from the same period 1997 cash cost of US$323,
evidencing the effects of the cost reduction efforts and the effects of a weaker
Canadian dollar in relation to the US dollar.

OTHER EXPENSES

Care and maintenance expenditures for the three months and six months ended 
June 30, 1998 were $1.0 million and $2.3 million, respectively.  Care and 
maintenance costs were up $0.9 million and $2.2 million from the amounts 
incurred in the three months and six months ended June 30, 1997, 
respectively.  Higher care and maintenance costs were attributed to the 
shutdown Colomac and Hope Brook properties and the suspended Matachewan 
project.  On a year to date basis, $1.0 million has been incurred at Colomac 
and $0.6 million at Hope Brook.

Royalties and marketing costs for the three months and six months ended June 30,
1998 were $0.3 and $0.6 million, respectively.  This compares to $0.4 and $0.9
million reported for the same periods in 1997.  Decreases in marketing costs
were related to the closure of the Colomac and Hope Brook mines.  The Ontario
Division was the only property subject to royalty payments during the six-month
periods ended June 30, 1997 and 1998.  Royalty payments for the first six months
of 1997 and 1998 were unchanged with the impacts of lower gold prices being
offset by slightly higher ore production.

Administrative costs and corporate costs were $2.2 million and $4.5 million 
for the three months and six months ended June 30, 1998, respectively.  These 
costs represent a cost reduction of 38% or $1.3 million from the $3.5 million 
incurred during the three-month period ended June 30, 1997, and a 28%, or 
$1.7 million decrease from the $6.2 million incurred for the six-month period 
ended June 30, 1997.  Decreases in costs were primarily associated with the 
employment of fewer personnel in the corporate office.

Depreciation and amortization for the three months and six months ended June 30,
1998 was $6.7 million and $10.7 million, respectively.  This compares to $5.9
million and $11.5 million for the same periods a year ago.  The changes between
periods reflect a 13% increase and a 7% decrease for the three months and six
months ended June 30, 1997, respectively.  Decreases in depreciation and
amortization were primarily related to the 1997 closure of the Hope Brook and
Colomac mines.  Lower costs were, however, partially offset by the 1997 year-end
downward revision of ore reserve estimates due to lower gold prices, resulting
in adjustments to depreciation and amortization.

Reclamation costs decreased 53% to $0.6 million and 51% to $1.2 million during
the three months and six months ended June 30, 1998 from $1.2 million and $2.4
million in the corresponding periods in 1997.  The closure of the Hope Brook and
Colomac mines in 1997 and slightly lower ore production at the ongoing
operations contributed to the significant decline in costs.  Cost declines were
partially offset by the lower ore reserve estimates which slightly increased per
unit cost accruals.

Exploration and other costs declined 64% to $0.5 million and 66% to $0.9 million
for the second quarter and six months ended June 

                                        16

<PAGE>

30, 1998, respectively, compared to the $1.3 million and $2.7 million 
incurred during the same period a year ago, respectively.  Management's 
decision to limit exploration and other discretionary costs was based upon 
the cash requirements for the start-up of the Kemess Mine and continued low 
gold prices.

The Company enters into foreign currency and commodity contracts to minimize
exposure to adverse fluctuations in Canadian dollar exchange rates associated
with US dollar sales of gold and copper and commodity prices.  A weakening of
the Canadian dollar relative to the US dollar resulted in a currency loss
provision of $11.4 million during the second quarter 1998, which more than
offset a first quarter 1998 loss recovery of $7.9 million bringing the loss for
the six-month period ended June 30, 1998 to $3.5 million.  This compares to
provisions for currency losses of $7.3 million and $10.3 million for the same
three- and six-month periods a year ago.  The Canadian/US foreign currency
exchange rate at December 31, 1997 was 1.431 or 3% lower than the exchange rate
of 1.472 at June 30, 1998.  The December 31, 1997 spot gold price of US$290 per
ounce increased 2% to the June 30, 1998 spot gold price of US$296 per ounce.  In
June of 1998 a significant portion of the outstanding hedge positions were
closed out (see Note 6 to the Consolidated Financial Statements).

The Company incurred interest on long-term debt of $10.4 million and $18.6
million during the three months and six months ended June 30, 1998,
respectively.  This compares to $6.5 million and $12.8 million incurred during
the same periods a year ago, respectively.  Increases in interest expense are
mainly attributed to the January 1998 issuance of Senior Secured Debentures in
the principal amounts of $19.5 million and US$30.7 million and the June 1998
issuance of US$115.0 million of Senior Secured Debentures to Trilon Financial
Corporation ("Trilon") and Northgate Exploration Limited ("Northgate") see Note
7 to the Consolidated Financial Statements).  Proceeds from the June 1998
issuance of Senior Secured Debentures was used in part to retire the Senior
Secured Debentures issued in January of 1998.  All but $0.4 million of the 1998
interest expense incurred has been capitalized against projects under
construction, mainly the Kemess project.

Generally accepted accounting principles (GAAP) promulgate the write-down of
unamortized deferred finance costs on retirement of debt.  Accordingly, deferred
financing costs associated with the Senior Secured Debentures retired in June of
1998, as well as legal, advisory and other costs associated with the $115.0
million Trilon financing were written off at June 30, 1998.  This resulted in a
charge to income of $15.0 million.

A write-down of $39.7 million was taken in the three-month period ended June 30,
1997 to reflect the permanent impairment of Colomac Assets.  No write-down of
this nature has occurred in 1998.

NET INCOME  (LOSS)
                                          
The Company incurred a net loss of  $35.0 million and $32.7 million for the
three months and six months ended June 30, 1998, respectively.  This compares
with a net loss of $52.1 million and $60.2 million for the three and six months
ended June 30, 1997, respectively.  The loss for the quarter and first six
months of 1998 was primarily the result of lower realized gold prices, lower
gold production and the write-off of deferred finance costs on retirement of
debt.  Improvements over 1997 financial results was attributed to cost reduction
efforts, closure of the high cost Colomac and Hope Brook mines and the 1997
$39.7 million write-down of Colomac Mine assets.

LIQUIDITY AND CAPITAL RESOURCES

The progressive decline in the gold price during 1997, which continued through
the second quarter of 1998 (from US$366 to approximately US$285 per ounce), has
adversely affected the Company's operating cash flow and its ability to meet its
cash obligations over the last eighteen months.  Commencing in 1997 and
continuing through 1998, the Company has implemented a number of measures to
conserve its cash resources, including closure of two high-cost mines (Colomac
and Hope Brook); cost reductions at its active operations and corporate office;
indefinite postponement of development projects; and other actions designed to
improve cash flow at its active operations.  

On April 17, 1998 the Company entered into a securities purchase agreement with
Trilon providing for the issuance by the Company to Trilon and Northgate of
senior secured debentures in the aggregate principal amount of US$120 million. 
The initial draw down of US$115 million occurred on June 24, 1998 and the
balance may be drawn down, subject to certain conditions being fulfilled, on or
before August 15, 1998 (see Note 7 to the Consolidated Financial Statements).

Due to the delay in closing this transaction, which occurred at a critical time
during the last few months of construction of the Kemess South Mine, the Company
was unable to meet certain payment commitments it had made to its key
contractors.  This resulted in a delay to the construction schedule at Kemess
whereby the mine commenced production on May 19, 1998 instead of the original
scheduled date of April 1.  The financial impact of these delays on cash flow
was exacerbated by a cost overrun on the Kemess South 

                                     17

<PAGE>

project.

The final cost of the Kemess South Mine is expected to be approximately $480
million, which is an increase of approximately 11.6% over the previously
announced cost estimate of $430 million.  The increase is attributed to a number
of unforeseen construction-related factors, the most significant of which
related to additional costs for the tailings dam construction and the tailings
pipeline system.  These additional costs accounted for approximately one-half of
the cost overrun.  The design of the tailings dam was substantially altered due
to geotechnical considerations related to bedrock and soil conditions.  At the
Company's request, the tailings pipeline design was changed to increase the
number of tailings lines from one to two, in order to decrease the operating
risk, adding additional costs to the previous estimates.  In the dam and
pipeline areas, the previously estimated budgets had not adequately allowed for
the added difficulties in the handling of materials, nor for the control of
sediments resulting from the earthworks program, nor for the substantial
increase in the volumes of materials to be moved as a consequence of redesign. 
Additional costs were incurred in power line clearing, government-assessed
stumpage costs, project expenses associated with increased costs resulting
primarily from staff requirements, site accommodations, travel, freight and
fuel.  The remaining overrun amounts were associated with redesign requirements
during the mechanical, piping, and electrical stage of the project construction,
and bulk construction material quantity reconciliations.

The result of the financings and other sources and applications of funds on the
Company's liquidity was to reduce the working capital deficiency from $126.9
million at December 31, 1997 to $104.8 million at March 31, 1998 and to $48.5
million at June 30, 1998.  The current ratio at each date was 0.34 to 1, 0.25 to
1 and 0.49 to 1, respectively.  The working capital deficiency resulted
primarily from the use of cash to construct the Kemess South project and from
accounts payable to equipment suppliers and contractors working on the project. 
As of June 30, 1998 the total of the Company's cash, cash equivalents and
marketable securities increased to $17.0 million, from $0.6 million at March 31,
1998 and from $10.4 million at the end of 1997.


OPERATING ACTIVITIES

In the second quarter of 1998, cash flow before net changes in other operating
items was $2.5 million compared with $2.1 million in the same period of 1997. 
In the six month period ended June 30, 1998 cash flow before net changes in
other operating items was $3.4 million compared with $1.6 million in the same
period a year earlier.  The increase in cash flow reflected improved operations
at the Giant and Pamour/Nighthawk mines.  Declines in the Company's average
realized gold price were more than offset by reductions in unit cash costs. 
Unit cash costs for the Giant and Pamour/Nighthawk mines for the six-month
period ended June 30, 1998 declined 17% to US$268 per ounce from US$322 per
ounce incurred during the same period in 1997.

Net changes to cash used in other operating items amounted to $46.0 million in
the second quarter of 1998 and $7.7 million in the same period a year earlier. 
These changes mainly reflect reductions in accounts payable on the Kemess South
project.  The Company reported net cash used in operating activities of $43.5
million and $5.6 million in the respective quarters of 1998 and 1997.


FINANCING ACTIVITIES

Net cash provided by financing activities was $96.9 million in the second
quarter of 1998 compared with net cash used in financing activities of $0.2
million in the second quarter of 1997.  

In the six month period ended June 30, 1998 net cash provided by financing 
activities was $154.9 million compared with $0.4 million used in the same 
period of 1997.  

As noted above and more fully described in Note 7 to the Consolidated Financial
Statements, the principal source of capital was provided by the US$120 million
Senior Secured Debenture financing.  In the three months ended June 30, 1998 the
Company issued 10 million common shares to the subordinated noteholders as
consideration for their consent to the Senior Secured Debenture financing. 
These shares were issued on closing of the US$120 million Senior Secured
Debenture financing and recorded for book purposes at the closing price of the
common shares on The Toronto Stock Exchange as of that date.

On June 24, 1998 the Company issued and sold to certain investors an aggregate
amount of 4,103,663 Special Warrants convertible into an aggregate amount of
4,103,663 common shares for aggregate consideration of approximately $5.3
million (see Note 8(b) to the Consolidated Financial Statements).  The Special
Warrants were issued to certain creditors of the Company in full payment and
satisfaction of indebtedness related principally to overdue accounts payable in
connection with the construction of the Kemess South Mine.

                                          18

<PAGE>

INVESTING ACTIVITIES

In the second quarter of 1998, net cash used in investing activities was $37.1
million compared with $35.7 million in the same period of 1997.  In the period
this year, capital expenditures amounted to $43.7 million.  In the second
quarter of 1997, capital expenditures amounted to $63.2 million and were offset
by $47.8 million received as assistance from the B.C. government for
construction of the Kemess project.  Long-term investments decreased by $17.8
million in the period.

In the first half of 1998, net cash used in investing activities was $69.6
million compared with $53.3 million in the same six-month period of 1997. 
Capital expenditures in the first half this year were $80.1 million.  In the
same period of 1997, capital expenditures of $109.5 million were partly off-set
by B.C. government assistance of $78.8 million.  

Investing activities were mainly associated with costs to complete construction
of the Kemess South Mine.  The development of the Kemess South Mine has been
facilitated by up to $166 million of compensation, economic assistance and
investment from the British Columbia provincial government.  To date, the
Company has received approximately $154 million from the British Columbia
provincial government.  The Company and the British Columbia provincial
government have agreed on the terms of payment for the remaining $12 million. 
The British Columbia provincial government has agreed to pay the Company $8.1
million in a lump sum payment on August 15, 1998 rather than to pay $12 million
over a 12-year period.

With construction of the Kemess South Mine complete, the Company anticipates
that investments in capital assets for the next several quarters will be limited
to sustaining capital at its active operations.


OUTLOOK

As a result of the Company's tight liquidity and the terms of the most recent
financing, the Company may be restricted in its ability to expand its hedging
activities.  This may limit the Company's ability to effectively hedge
production and realize gold and copper prices significantly above spot prices. 
Historically, the Company has been one of the industry leaders, averaging US$20
to US$40 per ounce over spot prices for its gold sales.  Should spot prices for
gold and copper continue at the current levels, the Company will be required to
examine the carrying value of all its assets to determine recoverability of its
investments.

The Company's future viability is dependent upon its ability to bring the Kemess
South Mine into an efficient operating state, maintain satisfactory credit
relationships with its suppliers and achieve and maintain profitable operations.
Successful operations in the future are also dependent upon various external
factors, the most significant of which are the prices of the commodities it
produces, gold and copper, and the US$/Cdn$ exchange rate.

Based upon current commodity prices, exchange rates and forecast production
levels, management expects to have sufficient cash to meet interest payments and
other obligations arising during the balance of 1998.  However, at such price
levels the Company's ability to meet interest payments and scheduled principal
payments of secured indebtedness occurring after 1998 will depend upon the
Company's ability to maintain its costs of production at or below current
levels, the performance of the Company's operating mines at or above forecast
production, and its ability to refinance principal repayments as they fall due.

The Company is continuing to work with its investment bankers and advisors in
seeking a long-term re-financing alternative.

                 SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

With the exception of historical statements, the matters discussed in this
Management's Discussion and Analysis of Financial Condition and Results of
Operations are forward-looking statements within the meaning of the Private
Securities Litigation Reform Act of 1995.  Such forward-looking statements are
based on numerous variables and assumptions that are inherently uncertain and
could cause actual results to be materially more or less favorable than
projected, including without limitation general economic and competitive
conditions and other factors.  Among such factors are those related to
volatility in the price of gold, copper and other commodities, changes in
interest and foreign exchange rates, government regulation and agency action,
competing land claims, the accuracy of estimates of ore reserves and mineral
inventory, environmental costs and risks, unanticipated processing, access,
transportation of supplies, water availability or other problems, other factors
relating to the Company's ability successfully to complete development projects
within projected capital budgets or to carry on mining operations within
projected operating budgets and the risk factors listed from time to time in the
Company's filings with the Securities and Exchange Commission, including without
limitation the Company's Annual Report on Form 10-K for the year ended December
31, 1997, Part I:, Item 7, Risks and Uncertainties.

                                      19

<PAGE>

PART II - OTHER INFORMATION

Item 1.   Legal Proceedings

     FULLOWKA ET AL V. ROYAL OAK MINES INC. ET AL, (September 1994; served July
     1995), begun by widows and dependents of nine miners killed during the 1992
     strike at the Giant Mine in the Supreme Court of the NWT as action no. CV
     05408 alleging, INTER ALIA, negligence on the part of the Company and two
     named directors/officers (along with 23 other named defendants).  Roger
     Warren, a member of the Union, was charged and subsequently convicted of
     causing the deaths by explosion.  The claim against the Company and all
     named defendants but one totals approximately $10.8 million plus taxes,
     interest and costs.  The claim against the two directors/officers and all
     defendants, excluding the Company, totals approximately $33.65 million plus
     taxes, interest and costs.  The Company has denied any negligence on its
     part.  Pleadings and productions are complete; pretrial discovery has
     recently commenced and is scheduled to continue through the summer of 1998.
     A second action (action no. CV 06964) has been commenced recently by the
     widows against the "John Does" in the original action; two of whom have
     served notices of third-party claims against, INTER ALIA, the Company and
     the two directors/officers aforesaid.  Defendants have moved the court to
     strike the second action as being untimely.  The Northwest Territories
     Workers' Compensation Board has rendered a decision that the immunity
     provisions of the Workers' Compensation Act do not apply to one of the
     named directors/officers, and application has been made for judicial review
     of this decision.  

     TSAY KEY DENE AND TAKLA INDIAN BANDS V. KEMESS MINES INC. ET AL, (February
     1997), begun in the  Supreme Court of British Columbia as action no. 97
     0723 seeking injunctive relief and an order setting aside the Certificate
     of Approval, License of Occupation and Permits to Cut for the Kemess South
     Mine and its power line for, amongst other causes, alleged failure on the
     part of the British Columbia government to adequately consult with the
     Bands before granting the documents in issue and the alleged bias on the
     part of the Government related to the Heads of Agreement entered into
     between the British Columbia Government and the Company in August 1995 in,
     INTER ALIA, settlement of the Windy Craggy compensation claim.  Interim and
     interlocutory injunction applications were denied by two separate judges of
     the British Columbia Supreme Court and have not been appealed by
     plaintiffs.  Hearing on the merits of plaintiffs' claims was scheduled to
     commence in September 1997 but was adjourned at the plaintiffs' request to
     accommodate a court-supervised mediation process between the British
     Columbia government and the plaintiffs, which began in August 1997,
     continued into December 1997 and was adjourned in January 1998 upon the
     withdrawal by one of the plaintiffs following pronouncement of the
     DELGAMUUKW  decision by the Supreme Court of Canada.  In May 1998, the
     Takla Indian Band discontinued the proceeding against the Defendants.  Also
     in May 1998, the other plaintiff, the Tsay Keh Dene, and the Provincial
     Government agreed to mediation, and the scheduled proceedings will be
     adjourned pending results of the mediation.

     ROYAL OAK MINES INC. V. TERCON CONTRACTORS LTD. (arbitration January 1998
     and heard March-May 1998, ongoing)  TERCON CONTRACTORS LTD. V. ROYAL OAK
     MINES INC. (builders lien proceeding) (May 1998) ROYAL OAK MINES INC. V.
     TERCON CONTRACTORS INC. (BCSC May 1998) claiming damages for breach of
     contract of approximately $6.8 million, including interest and legal costs,
     for failure to pay for equipment used to perform a contract at the Kemess
     South Mine.  On March 20, 1998, the arbitrator entered an award finding
     against the Company generally and directed that the parties attempt to
     agree as to actual amounts owing, absent which agreement the arbitrator
     would retain jurisdiction over the matter for the purpose of determining
     the amount of a final monetary award against the Company.  On May 5, 1998,
     the arbitrator made a partial award in the amount of $6,453,105.28.  A
     court order that the award could be enforced as a judgement was made on May
     7, 1998.  On May 13, 1998, Tercon obtained a writ of seizure and sale of
     the Kemess South Mine lease and claims.  The Company challenged the same
     and on June 4, 1998, the court ordered the return of the mine lease and
     claims, stayed any execution against the same under this proceeding and
     under the builders lien proceeding commenced by Tercon.  The court ordered
     the Company to pay $3,500,000 to Tercon from the proceeds of the Trilon
     financing (which amount has been paid) and invited the Company to make
     application for payment terms as to the balance before October 15, 1998. 
     In addition, in May 1998, Royal Oak commenced proceedings against Tercon
     for misrepresentation in connection with the subject contracts.  This
     proceeding is in very early stages.  Tercon is also proceeding with its
     builders lien action which is scheduled to be heard August 14, 1998 in
     Vancouver.

     Builders' Liens and Claims 
     
     The Company has also received notice of and is in the process of responding
     to builders' liens filed against the Kemess South Mine and/or claims
     arising out of work performed at the Kemess South Mine by various
     contractors.  The stated amount of the asserted liens filed against the
     Kemess South project, not including the amounts owing to contractors who
     have not filed liens, was approximately $14.6 million as of August 7, 1998.
     These include a proceeding by Golden Hill Ventures Ltd. for $6.15 million
     plus holdback, commenced September 1997.

                                           20

<PAGE>

Item 4.   Submission of Matters to a Vote of Security Holders.

     (a)  The Company's Annual and Special Meeting of Shareholders was held on
          June 26, 1998.  
     
     (c)  Seven proposals were submitted for shareholder approval, all of which
          were passed with the following voting results:

          1.   The proposal to fix the number of directors at five and to 
               authorize the Board of Directors to determine the number of 
               directors serving on the Board of Directors was approved with 
               101,795,297 votes for, 1,942,313 votes against, and 753,731 
               votes abstaining, not voted or spoiled.

          2.   All five of the Company's directors were re-elected to serve 
               until the next annual meeting of shareholders, based on the 
               votes as tabulated below:

<TABLE>
<CAPTION>
                                                               Votes abstained,
                                                       Votes       not voted or
 Nominee                              Votes for     withheld            spoiled
 ---------------------------        -----------     ---------  -----------------
<S>                                 <C>             <C>        <C>
 Margaret K. Witte                  102,659,981      148,888          1,682,472
 Ross F. Burns                      102,716,463       92,406          1,682,472
 William J.V. Sheridan              102,671,153      137,716          1,682,472
 J. Conrad Lavigne                  102,616,393      192,476          1,682,472
 George W. Oughtred                 102,699,656      109,213          1,682,472
</TABLE>

     3.   The reappointment of Arthur Andersen & Co., Chartered Accountants, as
          independent auditors and to authorize the directors to fix their
          remuneration was approved with 101,659,033 votes for, 612,996 votes
          against, 48,232 votes withheld and 2,171,080 votes abstaining, not
          voted or spoiled.

     4.   The proposal to confirm the adoption of the shareholder rights plan
          was approved with 40,020,406 votes for, 8,105,421 votes against and
          56,365,514 votes abstaining, not voted or spoiled.

     5.   The proposal to approve stock options previously granted to senior
          officers and directors of the Company, to purchase, in aggregate, up
          to 1,810,000 Common Shares of the Company was approved with 29,335,017
          votes for, 18,400,512 votes against and 56,755,812 votes abstaining,
          not voted or spoiled.

     6.   The proposal to approve the repricing to $1.10 per share of stock
          options previously granted to senior officers, directors and employees
          of the Company was approved with 26,406,799 votes for, 21,372,597
          votes against and 56,711,945 votes abstaining, not voted or spoiled.

     7.   The proposal to approve stock options previously granted to senior
          officers of the Company to purchase, in aggregate, up to 300,000
          Common Shares of the Company at a price of $1.55 per share was
          approved with 32,341,586 votes for, 15,452,855 votes against and
          56,696,900 votes abstaining, not voted or spoiled.

Item 6.   Exhibits and Reports on Form 8-K

     (a)  Exhibits
          See Exhibit Index.

     (b)  Reports on Form 8-K.

          A report on Form 8-K was filed on April 7, 1998, regarding a press 
          release from Royal Oak Mines Inc., announcing the Exploration 
          Program for 1998.

          A report on Form 8-K was filed on May 12, 1998, regarding a press 
          release from Royal Oak Mines Inc., announcing first quarter 1998 
          results of operations.

          A report on Form 8-K was filed on May 15, 1998, regarding a press 
          release from Royal Oak Mines Inc., announcing the agreement for 
          consents with the majority of holders of its US$175 million Senior 
          Subordinated Notes.

                                          21

<PAGE>

          A report on Form 8-K was filed on June 16, 1998, regarding a press 
          release from Royal Oak Mines Inc., announcing the company is not a 
          delinquent filer of annual financial statements.

          A report on Form 8-K was filed on June 24, 1998, regarding a  press 
          release from Royal Oak Mines Inc., announcing the closing of senior 
          secured financing.

                                          22

<PAGE>

                                      SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

                              ROYAL OAK MINES INC.


Date:  August 14, 1998        By /s/ Margaret K. Witte
                              ------------------------------
                              Margaret K. Witte
                              President and Chief
                              Executive Officer

Date:  August 14, 1998        By /s/ James H. Wood
                              ---------------------------
                              James H. Wood
                              Chief Financial Officer


                                          23

<PAGE>

                                    EXHIBIT INDEX

<TABLE>
<CAPTION>
Exhibit                                                             Method of Filing
- -------                                                             ----------------
<C>     <S>                                                         <C>
 4.1    Third Supplemental Indenture, dated as of May 19, 1998,
        by and among the Company, and Chase Manhattan Trust
        Company, National Association, the successor to Mellon       Filed herewith
        Bank, F.S.B., as Trustee.

 4.2    Fourth Supplemental Indenture, dated as of June 22, 1998,
        by and among the Company, and Chase Manhattan Trust          
        Company, National Association, the successor to Mellon       Filed herewith
        Bank, F.S.B., as Trustee.

 4.3    Fifth Supplemental Indenture, dated as of June 22, 1998,
        by and among the Company, and Chase Manhattan Trust          
        Company, National Association, the successor to Mellon       
        Bank, F.S.B., as Trustee.                                    Filed herewith

 4.4    Securities Purchase Agreement, dated as of April 17,
        1998, between the Company and Trilon Financial               
        Corporation.                                                 Filed herewith

 4.5    Securities Purchase First Amending Agreement, dated as of
        May 15, 1998, between the Company and Trilon Financial       
        Corporation.                                                 Filed herewith

 4.6    Securities Purchase Second Amending Agreement, dated as
        of June 22, 1998, between the Company and Trilon             
        Financial Corporation.                                       Filed herewith

 4.7    Senior Secured Debenture - Series A, in the principal
        amount of US$85,000,000 dated as of June 22, 1998.           Filed herewith

 4.8    Senior Secured Debenture - Series B, in the principal
        amount of US$35,000,000 dated as of June 22, 1998.           Filed herewith

 4.9    Trust Indenture Providing for the Issue of US$50 million
        15% Demand Bonds, dated as of June 22, 1998, among and       
        between the Company, and Montreal Trust Company of
        Canada, as Trustee.                                          Filed herewith

 27.    Financial Data Schedule                                      Filed herewith
</TABLE>


<PAGE>

                            THIRD SUPPLEMENTAL INDENTURE




     THIRD SUPPLEMENTAL INDENTURE, dated and effective as of May 19, 1998, by
and between Royal Oak Mines Inc., a corporation amalgamated under the laws of
Ontario, Canada (the "Company"), and Chase Manhattan Trust Company, National
Association, the successor to Mellon Bank, F.S.B., as Trustee (the "Trustee"),
amending the Indenture (hereinafter defined).


     Royal Oak Mines Inc. issued an aggregate principal amount of $175,000,000
of 11% Senior Subordinated Notes due 2006 and Series B 11% Senior Subordinated
Notes due 2006 (collectively, the "Notes") pursuant to an Indenture (the
"Original Indenture"), dated as of August 12, 1996 (as amended and supplemented
by the First Supplemental Indenture dated and effective as of December 31, 1997
and the Second Supplemental Indenture dated and effective as of January 31,
1998, (collectively with the Original Indenture, the "Indenture")), by and among
Royal Oak Mines Inc., the Trustee and Kemess Mines Inc. ("Kemess").  Kemess was
a Guarantor as defined in and for the purposes of the Indenture.  On December
29, 1997, Royal Oak Mines Inc. and Kemess amalgamated under the laws of Ontario,
Canada and the surviving entity of such amalgamation is the Company.


     Section 9.02 of the Indenture provides that the Company, when authorized by
a resolution of the board of directors of the Company, and the Trustee, together
with the written consent of the Holders (as defined in the Indenture) of at
least a majority in aggregate principal amount of


<PAGE>


the outstanding Notes, may amend the Indenture as provided in Section 9.02.  
The Company has designated a record date of April 15, 1998 (the "Record 
Date") for the purpose of obtaining such consent to this Third Supplemental 
Indenture and the Holders of a majority in aggregate principal amount of the 
Notes as of the Record Date have provided their written consent, and have not 
revoked such consent, to the amendment to the Indenture contained in this 
Third Supplemental Indenture, and the other conditions precedent in the 
Indenture to the execution hereof have been satisfied.  Pursuant to section 
9.05 of the Indenture, once the amendment to the Indenture contained in this 
Third Supplemental Indenture becomes effective, it will bind every Holder of 
Notes.

     Each party hereto agrees as follows for the benefit of the other party and
for the equal and ratable benefit of the Holders of the Notes:


1.   The second paragraph of section 9.05 of the Indenture is hereby amended by
     replacing the number "30" referred to therein with the number "3".

2.   The Indenture is hereby amended in every respect to the extent necessary to
     give effect to all sections of this Third Supplemental Indenture and
     conform the Indenture thereto.


     IN WITNESS WHEREOF, the parties hereto have caused this Third Supplemental
Indenture to be duly executed and effective all as of the date first written
above.


                                   ROYAL OAK MINES INC.


                                   By:  /s/ James H. Wood
                                      -----------------------------
                                      Name:  James H. Wood
                                      Title:  C.F.O.


<PAGE>


                                   CHASE MANHATTAN TRUST COMPANY, 
                                   NATIONAL ASSOCIATION, as Trustee



                                   By:  /s/ Roy Davis
                                      ----------------------------
                                      Name:  Roy Davis
                                      Title:  Vice President




<PAGE>
                            FOURTH SUPPLEMENTAL INDENTURE

     FOURTH SUPPLEMENTAL INDENTURE, dated and effective as of June 22, 1998, by
and between Royal Oak Mines Inc., a corporation amalgamated under the laws of
Ontario, Canada (the "Company"), and Chase Manhattan Trust Company, National
Association, the successor to Mellon Bank, F.S.B., as Trustee (the "Trustee").

RECITALS OF ROYAL OAK MINES INC.

     Royal Oak Mines Inc. issued an aggregate principal amount of $175 million
of 11% Senior Subordinated Notes due 2006 and Series B 11% Senior Subordinated
Notes due 2006 (collectively, the "Notes") pursuant to an Indenture, dated as of
August 12, 1996 (as amended and supplemented by the First Supplemental Indenture
dated and effective as of December 31, 1997, and the Second Supplemental
Indenture dated and effective as of January 31, 1998, and the Third Supplemental
Indenture dated and effective as of May 19, 1998) (as so amended and
supplemented, the "Indenture"), by and among Royal Oak Mines Inc., the Trustee
and Kemess Mines Inc. ("Kemess"). Kemess was a Guarantor as defined in and for
the purposes of the Indenture. On December 29, 1997, Royal Oak Mines Inc. and
Kemess amalgamated under the laws of Ontario, Canada and the surviving entity of
such amalgamation is the Company. Unless otherwise defined herein, terms with
initial capitals shall have the meanings ascribed thereto in the Indenture.

     Section 9.02 of the Indenture provides that the Indenture may be amended or
supplemented by the Company and the Trustee when authorized by a resolution of
the board of directors of the Company and consented to in writing by the holders
of at least a majority in principal amount of the outstanding Notes. The holders
of a majority in aggregate principal amount of the outstanding Notes have
provided their written consent to the amendments and supplements contained in
this Fourth Supplemental Indenture. Pursuant to Sections 9.02 and 9.05 of the
Indenture, upon the effective date (determined in accordance with the Indenture)
of the amendments and supplements to the Indenture contained in this Fourth
Supplemental Indenture, the Indenture as supplemented and amended by the Fourth
Supplemental Indenture will bind every Holder.

AGREEMENT

     Each party hereto agrees as follows for the benefit of the other party and
for the equal and ratable benefit of the holders of the Notes:

1.   The second preamble paragraph to the Indenture is hereby amended by
     deleting the words "Series B 11% Senior Subordinated Notes due 2006" (the
     "Exchange Notes") and substituting therefor in the preamble to the
     Indenture the words "Series B Secured 12.75% Senior Subordinated Notes due
     2006".

2.   The title to each of the Exchange Notes is hereby changed to "Secured
     12.75% Senior Subordinated Notes due 2006". Each issued and outstanding
     Note and the form of Notes

<PAGE>

                                          -2-

     annexed to the Indenture as Exhibit B are hereby amended accordingly. 
     The Exchange Notes are the only Notes outstanding under the Indenture.

3.   The interest rate payable on the Notes shall increase by 175 basis points
     to 12.75% per annum effective on and after May 30, 1998. Each issued and
     outstanding Note and the form of Notes annexed to the Indenture as Exhibit
     B are hereby amended accordingly. No exchange of the Notes is necessary to
     effect the amendments of the Notes hereunder.

4.   Section 1.01 is hereby amended by deleting in their entirety the
     definitions of "Asset Sale", "Bankruptcy Law", "Commodity Agreement",
     "Custodian" "Kemess South" and "Senior Secured Debentures" contained in
     that section and by inserting in alphabetical order in Section 1.01 the
     following definitions:

     "Acceptance Notice" has the meaning attributed thereto in Section 5.1 of
     the Inter-Creditor Agreement."

     "Amalgamation" has the meaning attributed thereto in Section 5.01."

     "APM" means Arctic Precious Metals, Inc., a Nevada corporation."

     "Applicable Law" means, in respect of any Person, property, transaction or
     event, all applicable laws, statutes, rules, by-laws and regulations, and
     all applicable official written directives, orders, judgements and decrees
     of Governmental Bodies."

     "Asset Sale" means any direct or indirect sale, issuance, conveyance,
     transfer, lease, assignment or other transfer by the Company or by any of
     its Restricted Subsidiaries (including any Sale and Leaseback Transaction)
     to any Person other than to the Company or to a direct or indirect wholly
     owned Restricted Subsidiary of the Company of (i) any Capital Stock of any
     Restricted Subsidiary of the Company or (ii) any other property or assets
     of the Company or of any Restricted Subsidiary of the Company, other than
     with respect to this clause (ii) any disposition of mineral products in the
     ordinary course of business.

     "Bankruptcy Law" means the United States Federal Bankruptcy Code of 1978,
     as amended from time to time, state or foreign law for the relief of
     debtors and any other applicable insolvency or other similar laws of any
     jurisdiction including, without limitation, any law of any jurisdiction
     permitting a debtor to obtain a stay or a compromise of the claims of its
     creditors against it or any laws of any jurisdiction permitting a creditor
     or officer of the court to enforce rights or remedies against the property,
     assets and undertaking of a debtor by contract or at law, including,
     without limitation, a court ordered or contractual appointment of a
     Custodian."

     "Beneficial Holders" has the meaning attributed thereto in Section 6.12."

<PAGE>

                                          -3-

     "Collateral" means the property, assets and undertaking of the Company
     (other than the Excluded Assets) and its Restricted Subsidiaries charged or
     in which the Trustee or the Collateral Agent is granted a Lien pursuant to
     the Security Documents and all replacements, substitutions and additions
     thereto and all income, gains and distributions thereon and proceeds
     thereof, of whatsoever nature and kind."

     "Collateral Agent" means initially CIBC-Mellon Trust Company, a Canadian
     trust company, chartered under the LOAN AND TRUST COMPANIES ACT (Canada)
     its successors and assigns, and any other Person appointed from time to
     time as collateral agent hereunder, provided, that for the purposes of the
     Inter-Creditor Agreement, the Trustee may be required to therein act as the
     "U.S. Collateral Agent" to the extent it holds Collateral and in such
     capacity shall be considered a "Collateral Agent" hereunder."

     "Commodity Agreement" of any Person means any option or futures contract or
     similar agreement or arrangement and all payments which become due and
     payable upon termination thereof or of any transaction thereunder and
     includes any contract for the sale of copper concentrate."

     "Company Purchase Offer" has the meaning attributed thereto in Section
     4A.06."

     "Consents" means the form of Consent To Fourth and Fifth Supplemental
     Indentures, Inter-Creditor Agreement, Security Documents and Waiver
     requested of the Holders in connection with the transactions contemplated
     in the Fourth Supplemental Indenture, the Fifth Supplemental Indenture and
     the Letter Agreement (as defined herein)." 

     "Custodian" means any receiver, manager, receiver/manager, interim
     receiver, agent, liquidator, trustee, assignee or similar person or
     representative under any Bankruptcy Law and whether appointed by a court or
     otherwise."

     "Eligible Holders" and "Eligible Holder" has the meanings attributed
     thereto in Section 6.12."

     "Excluded Assets" means the Windy Craggy Property."

     "Existing Hedging Indebtedness" means the present and future debts,
     liabilities and obligations of the Company or its affiliates to Bankers
     Trust Company, The Bank of Nova Scotia and Macquarie Bank Limited and their
     respective affiliates, successors or assigns pursuant to or in any way
     related to Commodity Agreements, Interest Swap Obligations, Foreign
     Exchange Obligations or Currency Agreements, whether matured or unmatured,
     originally entered into by the Company or its affiliates on or prior to the
     date hereof (in this definition "Contracts"), and the present and future
     debts, liabilities and obligations of the Company or its affiliates to
     Bankers Trust Company, The Bank of Nova Scotia and Macquarie Bank Limited
     or their respective affiliates, successors and assigns pursuant to or in
     any way related to instruments or agreement entered into after the date
     hereof, where such instruments or agreements are entered into to replace,
     amend, extend the

<PAGE>

                                        -4-

     maturity of or rollover Contracts (including such as previously replaced,
     amended, extended or rolled over), or otherwise to extend or reschedule
     payments due thereunder."

     "Final Deposit Time" has the meaning attributed thereto in Section 6.13."

     "Fourth Supplemental Closing Date" means the date on which the Trustee
     receives an Officer's Certificate certifying that all of the following have
     occurred, subject to any applicable escrow conditions: (i) the closing of
     the issuance and sale of the Senior Secured Debentures; (ii) the execution,
     delivery and registration or filing of the Security Documents and execution
     and delivery of the Inter-Creditor Agreement as each is contemplated in
     this Fourth Supplemental Indenture; and (iii) the completion of the
     issuance of shares and payments contemplated in paragraphs 1 and 8 of the
     letter agreement, dated May 15, 1998 (the "Letter Agreement"), between the
     Company and the Proposing Noteholders (as defined in the said letter
     agreement)."

     "Governmental Body" means any government, parliament, legislature, or any
     regulatory, authority, agency, commission or board of any government,
     parliament or legislature, or any court or (without limitation to the
     foregoing) any other law, regulation or rule-making entity (including,
     without limitation, any central bank, fiscal or monetary authority or
     authority regulating banks), having jurisdiction in the relevant
     circumstances, or any Person acting under the authority of any of the
     foregoing (including, without limitation, any arbitrator)."

     "Hazardous Substance" includes but is not limited to any contaminants,
     pollutants, dangerous substances, liquid wastes, industrial wastes, toxic
     substances, hazardous wastes, hazardous materials of whatsoever nature or
     kind or any other hazardous substance within the meaning of any Applicable
     Law including without limitation the HAZARDOUS PRODUCTS ACT (Canada), the
     CANADIAN ENVIRONMENTAL PROTECTION ACT (Canada), the ENVIRONMENTAL
     PROTECTION ACT (Ontario) and the WASTE MANAGEMENT ACT (B.C.)."

     "In Agreed Form" means, with respect to any document to be delivered by the
     Company or any Restricted Subsidiary to the Trustee under or pursuant to
     this Fourth Supplemental Indenture, the receipt by the Trustee of an
     Officer's Certificate and Opinion of Counsel, upon each of which the 
     Trustee may conclusively rely, to the effect that: (i) such document is in
     substantially the same form and substance as any comparable document
     previously delivered or to be delivered contemporaneously by the Company or
     such Restricted Subsidiary to the Senior Debentureholders (other than as it
     pertains to the priority of a Lien), such document is authorized or
     permitted by the Indenture and that the form and substance of such document
     complies with all of the terms of this Indenture; or (ii) if no such
     comparable document has or is to be delivered by the Company or such
     Restricted Subsidiary to the Senior Debentureholders, the form and
     substance of such document is authorized or permitted by this Indenture and
     the form and substance of such document complies with all of the terms of
     this Indenture."

<PAGE>

                                        -5-

     "Initial Deposit Time" has the meaning attributed thereto in Section 6.13."

     "Inter-Creditor Agreement" means the inter-creditor agreement incorporated
     herein by reference, to be dated and effective as of the Fourth
     Supplemental Closing Date among Trilon, Northgate Exploration Limited, the
     Trustee, the Collateral Agent, APM and the Company, which agreement shall
     be in the form annexed as Exhibit E hereto, as amended or supplemented from
     time to time in accordance with this Indenture."

     "Kemess Mine" means the Kemess North Property and Kemess South Mine."

     "Kemess Newco" means the wholly owned Restricted Subsidiary of the Company
     into which, at the request of the Senior Debentureholders, the Company will
     transfer ownership of the Kemess Mine and related assets."

     "Kemess Newco Guarantee and Assumption" means the guarantee and assumption
     agreement to be given by Kemess Newco, in compliance with Sections 4.20 and
     4.21 of the Indenture and In Agreed Form, to the Trustee for the benefit of
     the Holders of the Notes, of the Company's obligations under the
     Indenture."

     "Kemess Newco Liens" means the present and future fixed and floating Liens
     to be granted by Kemess Newco to the Trustee or the Collateral Agent in all
     of its property, assets and undertaking, including the Kemess Mine and
     related assets, which Lien will be In Agreed Form and will secure the
     payment and performance by Kemess Newco of its obligations under the Kemess
     Newco Guarantee and Assumption."

     "Kemess North Property" means all present and future property, assets and
     undertaking comprising or relating to what is generally referred to as the
     Kemess North property in British Columbia, Canada, including, without
     limitation all mineral claims and leases referred to in Exhibit F hereto,
     all buildings, equipment, fixtures and other property and assets owned or
     leased by the Company (or in which the Company otherwise has an interest)
     situated or used at the Kemess North Property site, all operations,
     exploration and other activities carried on at such site and all permits,
     authorizations, licenses and similar approvals relating thereto."

     "Kemess South Mine" means all present and future property, assets and
     undertaking comprising or relating to what is generally referred to as the
     Kemess South property in British Columbia, Canada, including, without
     limitation, all mineral claims and leases referred to in Exhibit G hereto,
     all buildings, equipment, fixtures and other property and assets owned or
     leased by the Company (or in which the Company otherwise has an interest)
     situated or used at the Kemess South Mine site, all operations, exploration
     and other activities carried on at such site and all permits,
     authorizations, licenses and similar approvals relating thereto."

     "Kemess South Resources Limited Partnership" means the limited partnership
     by that name formed under the laws of the Province of British Columbia, and
     its successors and assigns."

<PAGE>

                                        -6-

"Nighthawk Lake Mine" means the property covering approximately 11,726 acres
representing 254 claims in both Cody and Macklem Townships, Ontario, with most
of the property held outright by the Company as staked mineral claims and the
remaining property held through various agreements and subsidiary companies."

"Noteholder Liens" means the present and future Liens held by the Trustee, or a
Collateral Agent, to secure payment and performance of the obligations of the
Company and its Restricted Subsidiaries under the Indenture, the Notes and the
Security Documents."

"Pamour Mine" means the property (exclusive of the Hoyle properties) located in
Whitney Township approximately 15 miles east of Timmins, Ontario which consists
of 38 patented mining claims and one license of occupation covering
approximately 1,531 acres of mining and surface rights."

"Purchase Event" has the meaning attributed thereto in Section 5.1 of the 
Inter-Creditor Agreement."

"Purchase Event Price" has the meaning attributed thereto in Section 6.13."

"Purchase Event Record Date" means the Business Day following the date on which
the Trustee publishes a notice on Bloomberg in accordance with Section 4.06(f)."

"Royalty Agreement" means an agreement between the Company and Trilon to be
dated and effective as of the Fourth Supplemental Closing Date, as such royalty
agreement is amended or supplemented from time to time."

"Royalty Debenture" means the debenture granted by the Company to Trilon to
secure the Obligations of the Company under the Royalty Agreement, as amended or
supplemented from time to time."

"Royalty Interest" means a royalty interest in gross revenues of the Kemess Mine
granted by the Company to Trilon in accordance with the Royalty Agreement."

"Sale and Leaseback Transaction" means, in respect of any Person, any direct or
indirect sale, issuance, conveyance, transfer, lease, assignment or other
transfer of any property or assets of such Person to any other Person following
which such other Person leases back to such Person such property or assets."

"Securities Purchase Agreement" means an agreement between the Company and
Trilon made the 17th day of April, 1998, as amended or supplemented from time to
time."

"Security Documents" means, collectively, the agreements, instruments and
documents delivered from time to time to the Trustee or any Collateral Agent by
the Company, Kemess Newco and APM, and any other Restricted Subsidiary, for the
purpose of creating, perfecting, preserving or protecting the Liens in favor of
the Trustee or the

<PAGE>

                                        -7-

Collateral Agent for the benefit of the Holders, which secure the payment and
performance by the Company and its Restricted Subsidiaries of their respective
obligations under the Indenture and the Notes and such Security Documents and
including any guarantees thereof. The Security Documents as of the date hereof
are described in Exhibit H hereto.

"Senior Debentureholders" means the holders from time to time of the Senior
Secured Debentures."

"Senior Debentures Security" means the present or future Permitted Liens held by
the Senior Debenture holders to secure the obligations of the Company under or
in respect of the Senior Secured Debentures, the Documents (as defined in the
Senior Secured Debentures) and the Securities Purchase Agreement and including
any guarantees thereof."

"Senior Secured Debentures" means the Series A Senior Secured Debenture and the
Series B Senior Secured Debenture in the aggregate principal amount not to
exceed US$120 million to be issued to Trilon and Northgate Exploration Limited,
pursuant to the terms of the Securities Purchase Agreement and includes without
limitation (i) any amendment or supplement thereto from time to time and (ii)
each Refinancing thereof from time to time with Trilon, Northgate Exploration
Limited or any other Persons."

"Senior Secured Parties" means collectively the holders of Permitted Liens
described in clauses (i), (ii), (iii), (vii), (xii) and (xiii) of the definition
of Permitted Liens on the property, assets or undertaking of the Company or any
Restricted Subsidiary, including, without limitation, Kemess Newco and their
respective successors and assigns."

"Subscribing Eligible Holder" has the meaning attributed thereto in Section
6.13."

"Trilon" means Trilon Financial Corporation, its successors and assigns."

"Windy Craggy Property" means the mineral claims in and around Windy Craggy
Mountain in the Tatshenshini/Alesk region of northwestern British Columbia."

"Working Capital Facility" means (i) a working capital facility in a principal
amount not to exceed US$45 million or (ii) a working capital facility in excess
of US$45 million, provided that the lenders thereof execute and deliver an
inter-creditor agreement In Agreed Form in favor of the Trustee and any
Collateral Agent that provides to the Holders at least the same rights and
benefits as set out in Section 5.1 of the Inter-Creditor Agreement, as amended
or supplemented from time to time, and in respect of which the Trustee has
received, at the expense of the Company, a favorable opinion from an Independent
Financial Advisor that the working capital facility is on conventional market
terms, in each case in compliance with Section 4.12 of this Indenture, and any
Refinancing thereof from time to time."

<PAGE>

                                        -8-

5.   The definitions of "Foreign Exchange Contracts", "Currency Agreements" and
     "Interest Swap Obligations" in Section 1.01 are hereby amended by deleting
     the period and adding the following words, at the end of each of those 
     definitions:

           "and all payments which become due and payable upon termination 
           thereof or of any transaction thereunder."

6.   Clause (vii) of the definition of "Indebtedness" in Section 1.01 is hereby
     deleted and replaced by the following:

           "(vii) comprising net liabilities under Interest Swap Obligations, 
           Foreign Exchange Obligations, Currency Agreements and Commodity 
           Agreements;"

7.   The definition of "Mining Related Assets Investment" in Section 1.01 is
     hereby amended by adding the following words, at the end of the definition:

           "and including payment of accounts payable incurred in connection 
           with the making of any such Investment or capital expenditures."

8.   The definition of "Permitted Liens" in Section 1.01 is hereby deleted in
     its entirety and replaced with the following:

     "Permitted Liens" means:

     (i)    Liens on the property, assets or undertaking of the Company or of a 
            Restricted Subsidiary that, in each case, secure Senior Indebtedness
            of the Company or such Restricted Subsidiary permitted under 
            paragraph (b) of section 4.12;

     (ii)   Liens on the property, assets or undertaking of the Company or of a 
            Restricted Subsidiary that, in each case, secure Indebtedness 
            permitted under clause (v) of the definition of Permitted 
            Indebtedness contained in section 4.12;

     (iii)  Liens on the property, assets or undertaking of the Company or of a
            Restricted Subsidiary that, in each case, secure Indebtedness 
            permitted under clause (vii) of the definition of Permitted 
            Indebtedness contained in section 4.12;

     (iv)   Liens securing Indebtedness of a Person existing at the time that 
            such Person is merged into or consolidated with the Company or 
            Restricted Subsidiary, provided that such Liens were in existence 
            prior to the completion of such merger or consolidation and do not 
            extend to any assets other than those of such Person;

<PAGE>

                                        -9-

    (v)    Liens on property acquired by the Company or a Restricted 
           Subsidiary, provided that such Liens were in existence prior to 
           the contemplation of such acquisition and do not extend to 
           any other property;

    (vi)   Liens on the property, assets or undertaking of the Company that,
           in each case, secure the royalty payments to be made by the 
           Company or a Restricted Subsidiary to Kemess South Resources 
           Limited Partnership or, upon dissolution to the partners 
           thereof, in respect of copper extracted and processed from 
           the Kemess South property;

    (vii)  (a) Liens on the property, assets or undertaking of the Company or 
           a Restricted Subsidiary that secure Indebtedness of not more than 
           US$60 million in aggregate principal amount at any time under 
           Existing Hedging Indebtedness, Currency Agreements, Interest Swap 
           Obligations, Foreign Exchange Obligations and Commodity 
           Agreements; and (b) Liens on the property, assets or undertaking 
           of the Company that, in each case, secure Capitalized Lease 
           Obligations or Purchase Money Obligations, in each case to the 
           extent that such Indebtedness is Permitted Indebtedness under 
           this Indenture;

    (viii) (a) Liens in favor of the Company or any direct or indirect 
           wholly owned Restricted Subsidiary; and (b) Liens to secure 
           Indebtedness permitted under clause (xiv) of the definition of 
           Permitted Indebtedness;

    (ix)   Liens incurred, or pledges and deposits in connection with, 
           workers' compensation, unemployment insurance and other social 
           security benefits, and leases, appeal bonds and other obligations 
           of like nature incurred by the Company or any Restricted 
           Subsidiary in the ordinary course of business;

    (x)    Liens imposed by law, including, without limitation, mechanics', 
           carriers' warehousemen's, materialmen's, suppliers' and vendors' 
           Liens, incurred by the Company or any Restricted Subsidiary in 
           the ordinary course of business;

    (xi)   Liens for AD VALOREM, income or property taxes or assessments and 
           similar charges which either are not delinquent or are being 
           contested in good faith by appropriate proceedings for which the 
           Company has set aside on its books reserves to the extent 
           required by GAAP;

    (xii)  Liens on the property, assets or undertaking of the Company that, 
           in each case, secure the Obligations of the Company under the 
           Royalty Agreement, including pursuant to the Royalty Debenture;

    (xiii) Liens on the property, assets or undertaking of any Restricted 
           Subsidiary, including, without limitation, Kemess Newco, that 
           secure Indebtedness 

<PAGE>

                                        -10-

            under guarantees or assumptions of Indebtedness described in 
            clause (xiii) of the definition of "Permitted Indebtedness" 
            contained in Section 4.12, provided that in respect of 
            Indebtedness referred to in clauses (ii), (iii) and (iv) of the 
            definition of "Permitted Indebtedness" as referred to in clause 
            (xiii), such Liens shall be permitted only to the extent they 
            comply with the provisions of clause (vii)(a) of the definition 
            of "Permitted Lien";

    (xiv)   Liens granted by the Company and its Restricted Subsidiaries to 
            the Trustee or any Collateral Agent pursuant to the terms hereof, 
            provided that in respect of Indebtedness referred to in clauses 
            (ii), (iii) and (iv) of the definition of "Permitted 
            Indebtedness" as referred to in clause (xiv), such Liens shall be 
            permitted only to the extent that they, in the aggregate, secured 
            Indebtedness of not more than US$60 million under the guarantees 
            described in such clause (xiv);

    (xv)    rights reserved to or vested in any government or governmental 
            body by the terms of any lease, licence, franchise, grant or 
            permit, or by any statutory provision, to terminate the same, to 
            take action which results in an expropriation, to designate a 
            purchase of any property subject thereto or to require annual or 
            other payments as a condition to the continuance thereof;

    (xvi)   zoning restrictions, easements, rights of way, leases or other 
            similar encumbrances or privileges in respect of real property 
            which in the aggregate do not materially impair the use of such 
            property by the Company or any Restricted Subsidiary in the 
            operation of its business;

    (xvii)  security given by the Company or a Restricted Subsidiary to a 
            public utility or any governmental body, when required by such 
            utility or governmental body in connection with the operations of 
            the Company or such Restricted Subsidiary in the ordinary course 
            of its business, which singly or in the aggregate do not 
            materially detract from the value of the asset concerned or 
            materially impair its use in the operation of the business of the 
            Company or such Restricted Subsidiary;

    (xviii) the reservation in any original grants from any Governmental Body 
            of any land or interest therein and statutory exceptions to 
            title; and

    (xix)   title defects or irregularities which are of a minor nature and 
            which do not materially detract from the value of the assets of 
            the Company or its Restricted Subsidiaries encumbered thereby.

9.   The definition of "Refinancing Indebtedness" in Section 1.01 of the
     Indenture is hereby amended by deleting the words in brackets in the 
     third and fourth lines and substituting therefor the following words:

            "(other than pursuant to clauses (v), (vi), (vii), (viii), (ix), 
            (xii), (xiii) or (xiv) of the definition of "Permitted 
            Indebtedness")."

10.  Section 4.06 is hereby amended by adding the following at the end of clause
     4.06(a):



<PAGE>

                                      -11-

          "The Officer's Certificate delivered pursuant to this Section 
          4.06(a) shall be accompanied by an Opinion of Counsel (i) stating 
          that, in the opinion of such counsel, subject to customary 
          exclusions and exceptions reasonably acceptable to the Trustee, 
          either (A) all such action has been taken with respect to the 
          recording, registering, filing, rerecording and refiling of the 
          Indenture, all supplemental indentures, the Security Documents, 
          financing statements, continuation statements and all other 
          instruments of further assurance as is necessary to maintain the 
          Noteholder Liens and the Kemess Newco Liens and reciting the 
          details of such action or referring to prior Opinions of Counsel in 
          which such details are given, and stating that all financing 
          statements and continuation statements have been executed and filed 
          and such other actions taken that are necessary fully to preserve 
          and protect the rights of the Holders and the Trustee hereunder and 
          under the Security Documents, or (B) no such action is necessary to 
          maintain the Noteholder Liens and the Kemess Newco Liens, if any, 
          and (ii) stating what, if any, action of the foregoing character is 
          necessary during the one-year period commencing April 1 in the then 
          current calendar year to so maintain the Noteholder Liens and the 
          Kemess Newco Liens during such period."

     Section 4.06 is further amended by adding the following clauses thereto:

          "(e) On the written request, from time to time, of Holders of at 
          least a majority in aggregate principal amount of the outstanding 
          Notes, the Company shall deliver to those Holders making such 
          request such financial information, reports or other materials as 
          the Company delivers to the Senior Debentureholders or is required 
          to deliver to the Senior Debentureholders pursuant to the terms 
          thereof. Notwithstanding the foregoing, the Company shall not be 
          required to provide any such information which is confidential and 
          not otherwise generally available to the holders of the common 
          shares of the Company.

          (f) The Company shall deliver to the Trustee a true and complete 
          copy of any notice that it receives from the Senior Debentureholders 
          which constitutes a Purchase Event and the Company shall notify the 
          Trustee in writing of the occurrence of any event which constitutes a 
          Purchase Event or of any event which with the giving of notice or 
          passage of time will constitute a Purchase Event, whether or not the 
          Company receives notice thereof from the Senior Debentureholders, in 
          each case immediately (but in any event within one Business Day) after
          the Company obtains notice or actual knowledge thereof. Upon the 
          earlier of the Company receiving such notice or becoming aware of such
          circumstances the Company shall no later than within one Business Day 
          issue a press release that: (i) states that a Purchase Event has 
          occurred or with the giving of notice or passage of time

<PAGE>

                                         -12-

          will occur; (ii) provides a description of the Purchase Event; 
          (iii) contains a statement that upon the occurrence of a Purchase 
          Event, Eligible Holders have the right for a limited period of time 
          to buy the Senior Secured Debentures and the Senior Debentures 
          Security; (iv) states the time period within which a purchase must 
          be effected under the Inter-Creditor Agreement in respect of the 
          subject Purchase Event; and (v) provides notice that a conference 
          call concerning the Purchase Event will be convened by the Company 
          within no later than two Business Days of the date of the press 
          release and the details for participation in such conference call 
          shall. The press release will be disseminated on those wire 
          services and publications customarily used by the Company to 
          disseminate financial information and information concerning 
          material events. At the expense of the Company, the Trustee shall 
          mail a copy of any notice received by it pursuant to this Section 
          4.06(f) or pursuant to Section 5.1 of the Inter-Creditor Agreement 
          to each Holder within one Business Day (5 Business Days if the 
          Notes are no longer held in book-entry form by the Depositary) 
          after the Trustee's receipt thereof, by first class mail to such 
          Holder's address as set forth in the Registrar's books and the 
          Trustee shall, as soon as practicable but in no event later than 
          three Business Days of the earlier of its receipt of any such 
          notice or the date a Trust Officer obtains actual knowledge of the 
          occurrence of a Purchase Event, publish an announcement in the form 
          prescribed in Exhibit I on the Bloomberg wire service. The Trustee 
          shall have no further or other duty under this Section 4.06(f) and 
          shall not be liable to any Person for the accuracy, content, 
          adequacy or delivery to any Person of such notice, or for any 
          action taken thereupon by any Person."

11.  Section 4.11 of the Indenture is amended by inserting the words "(other 
     than the transfer of the Kemess Mine and related assets by the Company 
     to Kemess Newco in accordance with the terms of the Indenture)" after 
     the words "$15 million" in line 20 therein.

12.  The definition of "Permitted Indebtedness" in section 4.12 of the 
     Indenture is hereby deleted and replaced in its entirety with the 
     following:

     "Permitted Indebtedness" means, without duplication, each of the following:

     (i)       Indebtedness under the Notes, this Indenture, any Guarantee, the
               Security Documents and the Kemess Newco Guarantee and Assumption;

     (ii)      Existing Hedging Indebtedness;

     (iii)     Indebtedness in respect of Commodity Agreements of the Company 
               and Restricted Subsidiaries provided however that in entering 
               into such Commodity Agreements after the Fourth Supplemental 
               Closing Date the Company and the Restricted Subsidiaries are 
               in compliance with Section 4.22 of this Indenture and 
               provided, further, that such Commodity

<PAGE>

                                      -13-

               Agreements (other than those involving the sale of copper
               concentrate to the extent the following is not relevant to such
               copper concentrate agreements) are entered into to reduce the
               exposure of the Company and its Restricted Subsidiaries to
               fluctuations in the prices of commodities;

     (iv)      Indebtedness under Interest Swap Obligations, Foreign Exchange 
               Obligations and Currency Agreements of the Company and the 
               Restricted Subsidiaries; provided, however, that such Interest 
               Swap Obligations, Foreign Exchange Obligations and Currency 
               Agreements are entered into to protect the Company and its 
               Restricted Subsidiaries from fluctuations in interest or 
               exchange rates on Indebtedness Incurred in accordance with 
               this Indenture to the extent the notional principal amount of 
               such Interest Swap Obligation, Foreign Exchange Obligation or 
               Currency Agreements does not exceed the principal amount of 
               the Indebtedness to which such Obligation relates; and 
               provided, further, that the Company may enter into Foreign 
               Exchange Obligations and Currency Agreements to protect the 
               Company and its Restricted Subsidiaries from fluctuations in 
               exchange rates related to the operating costs of the Company 
               and its Restricted Subsidiaries, in each case consistent with 
               past practice of the Company; 

     (v)       Indebtedness under the Working Capital Facility to the extent 
               that, as of any date, the aggregate of the principal amount of 
               such Indebtedness and the principal amounts outstanding under 
               the Senior Secured Debentures does not at such date exceed 
               US$120 million and provided, however that from and after the 
               date of the Company's request to the Trustee for the release 
               contemplated by Section 4A.12, the aggregate amount of 
               Indebtedness that, at any time, is "Permitted Indebtedness" 
               under this clause (v) shall not exceed US$45 million less the 
               aggregate principal amount outstanding under the Senior 
               Secured Debentures."

     (vi)      Capitalized Lease Obligations and Purchase Money Obligations 
               of the Company or any Restricted Subsidiary not to exceed, 
               calculated using foreign exchange rates on date of Incurrence, 
               US$25 million in aggregate principal outstanding at any one 
               time; 

     (vii)     Indebtedness under or in relation to the Senior Secured 
               Debentures in aggregate principal amounts not to exceed, as of 
               any date, US$120 million, together with all interest, fees, 
               and other amounts payable under or in respect of the Senior 
               Secured Debentures and the Senior Debentures Security, 
               provided that, if the aggregate principal amount of, under or 
               in respect of the Senior Secured Debentures (excluding 
               interest, fees and other amounts payable under or in respect 
               of the Senior Secured Debentures and the Senior Debentures 
               Security) is equal to or less than US$45 million at any time, 
               and if at such time, the Trustee is required to release and 
               discharge the Noteholder Liens following compliance by the 
               Company with and in accordance with Section 4A.12, the 
               aggregate principal amount of, under or in respect of the 
               Senior Secured Debentures that, at any time, is "Permitted 
               Indebtedness" under this clause (vii) shall not exceed US$45 
               million together with all interest, fees and other

<PAGE>

                                      -14-

               amounts payable under or in respect of the Senior Secured
               Debentures and the Senior Debentures Security;

     (viii)    Indebtedness of a direct or indirect Restricted Subsidiary of 
               the Company to the Company or to a direct or indirect wholly 
               owned Restricted Subsidiary of the Company for so long as such 
               Indebtedness is held by the Company or a direct or indirect 
               wholly owned Restricted Subsidiary of the Company in each case 
               subject to no Lien held by a Person other than the Company, 
               any direct or indirect wholly owned Restricted Subsidiary of 
               the Company, any of the Senior Secured Parties or the Trustee 
               or any Collateral Agent, in each case for benefit of the 
               Noteholders; provided that if as of any date any Person other 
               than the Company, any direct or indirect wholly owned 
               Restricted Subsidiary of the Company, any of the Senior 
               Secured Parties or the Trustee or any Collateral Agent, in 
               each case for the benefit of the Noteholders owns or holds any 
               such indebtedness or holds a Lien in respect of such 
               Indebtedness, such date shall be deemed the Incurrence of 
               Indebtedness not constituting Permitted Indebtedness by the 
               issuer of such Indebtedness;

     (ix)      Indebtedness of the Company to a direct or indirect wholly 
               owned Restricted Subsidiary of the Company for so long as such 
               Indebtedness is held by a direct or indirect wholly owned 
               Restricted Subsidiary of the Company in each case subject to 
               no Lien; provided that (a) any Indebtedness of the Company to 
               any direct or indirect Restricted Subsidiary of the Company is 
               unsecured and subordinated, pursuant to a written agreement, 
               to the Company's obligations under this Indenture and the 
               Notes, and (b) if as of any date any Person other than a 
               direct or indirect wholly owned Restricted Subsidiary of the 
               Company owns or holds any such Indebtedness or any Person 
               holds a Lien in respect of such Indebtedness, such date shall 
               be deemed the Incurrence of Indebtedness not constituting 
               Permitted Indebtedness under this clause (ix) by the issuer of 
               such Indebtedness; 

     (x)       Guarantees by Restricted Subsidiaries of the Company of 
               Indebtedness of the Company (other than Permitted 
               Indebtedness) Incurred on or after the Issue Date; provided 
               that such Indebtedness was Incurred in compliance with this 
               Section 4.12; 

     (xi)      subject to Section 4A.16, Refinancing Indebtedness;

     (xii)     Indebtedness of the Company or any Restricted Subsidiary 
               (including, without limitation, Kemess Newco), when and if 
               incurred, under or in relation to the Royalty Agreement and 
               the Royalty Debenture;

     (xiii)    notwithstanding clause (x) of this definition of Permitted 
               Indebtedness, guarantees or assumptions by Restricted 
               Subsidiaries (including, without limitation, Kemess Newco) of 
               Indebtedness and Obligations permitted under clauses (i), 
               (ii), (iii), (iv), (v), (vi), (vii) and (xii) of this 
               definition of Permitted Indebtedness; and

<PAGE>

                                      -15-

     (xiv)     guarantees by the Company of Indebtedness and Obligations of 
               or assumed by Kemess Newco of Indebtedness permitted under 
               clauses (i), (ii), (iii), (iv), (v), (vi), (vii) and (xii) of 
               this definition of Permitted Indebtedness."

13.  Section 4.13 of the Indenture is hereby amended by: (a) deleting the word 
     "or" at the end of clause (7); (b) inserting an "or" at the end of clause 
     (8); and (c) adding the following after clause (8):

     "(9)      the Senior Secured Debentures to the extent such Senior 
               Secured Debentures or related documents restrict payment or 
               distributions of any kind from any Restricted Subsidiary, 
               including without limitation, Kemess Newco, to the Company or 
               other Restricted Subsidiary without the prior written consent 
               of the Senior Debentureholders after the occurrence and during 
               the continuance of a "Default" or "Event of Default" (as 
               defined in the Senior Secured Debentures provided that no 
               Restricted Subsidiary, including Kemess Newco, shall be 
               affected by a Payment Restriction under or by reason of the 
               Senior Secured Debentures unless such Restricted Subsidiary 
               has and continues to be jointly and severally liable as a 
               Guarantor for the performance by the Company of its 
               obligations under the Notes, the Indenture and the Security 
               Documents and such Restricted Subsidiary has granted Liens to 
               the Trustee or any Collateral Agent for the benefit of the 
               Holders to secure such obligations."

14.  Section 4.16 of the Indenture is hereby amended by: (i) deleting the
     introductory paragraph and paragraph (a) thereof; (ii) adding the
     following new introductory paragraph and paragraphs (a), (a.1) and (a.2);
     (iii) adding an "s" to the first use of the word "paragraph" in paragraph
     (b); (iv) deleting the "(a)" after the first use of the word "paragraphs"
     as amended as aforesaid in paragraph (b); (v) adding "(a)(iii), (a)(iv) and
     (a)(v)" after the word "paragraphs" as amended as aforesaid; and (vi)
     inserting the word "Investment" after the words "Mining Related Assets" in
     the 14th line of paragraph (b):

               The Company shall not and shall not permit any of its 
               Restricted Subsidiaries to, consummate any Asset Sale, 
               including without limitation, an Asset Sale of the Kemess 
               South Mine or any undivided interest therein, without the 
               prior written consent of the Holders of a majority in 
               aggregate principal amount of the outstanding Notes. 
               Notwithstanding the foregoing, so long as no Default, Event of 
               Default or Purchase Event has occurred or would occur as a 
               result, the Company and its Restricted Subsidiaries may effect 
               Asset Sales, free and clear of the Noteholder Liens and the 
               Kemess Newco Liens, on the following terms:

     (a)  The Asset Sale of:
     
          (i)  any machinery, equipment, other personal property or other 
          similar property that has become worn out, obsolete, or 
          unserviceable, which property, if Collateral, shall be replaced 
          with or substituted for with machinery, equipment or other property 
          not

<PAGE>
                                      -16-

          necessarily of the same character but being of at least equal value
          and utility to the Company and its Restricted Subsidiaries as the
          property so disposed of, which replacement property shall, without
          further action, become subject to the Noteholder Liens and the Kemess
          Newco Liens;

          (ii)      or abandonment of any personal property the use of which is
          no longer necessary or desirable in or material to the conduct of
          the business of the Company and its Restricted Subsidiaries and the
          maintenance of their respective earnings;

         (iii)      any real property or any interest therein which is
         undeveloped and held by the Company or a Restricted Subsidiary for
         exploration purposes and is not material to the conduct of the
         business of the Company and its Restricted Subsidiaries (and for
         greater certainty, not real property comprising the Kemess South
         Mine) provided that: (A) the Asset Sale is at a price at least
         equal to fair market value; (B) to the extent that the proceeds
         of sale are Cash or Cash Equivalents, the Net Cash Proceeds are
         applied in accordance with Section 4.16(b) hereof within 180 days
         of receipt thereof by the Company or a Restricted Subsidiary, as
         applicable, and if in accordance with Section 4.16(b) the Net
         Cash Proceeds are applied to or invested in Mining Related Asset
         Investments and the assets and properties sold were Collateral,
         the properties and assets acquired as a result of the Mining
         Related Assets Investment shall, upon such investment being made,
         be subject to the Noteholder Liens and the Kemess Newco Liens,
         without further action, and if, to the extent that, the proceeds
         of such Asset Sale are not Cash or Cash Equivalents, the non-cash
         consideration shall, upon the closing of such Asset Sale, be
         subject to the Noteholder Liens and the Kemess Newco Liens
         without further action;

<PAGE>

                                      -17-

         (iv)       any assets and properties of the Company or a Restricted
         Subsidiary, other than assets described in clauses (i), (ii), and (iii)
         above, and other than assets which comprise or are in any way material
         to the Kemess South Mine or the Capital Stock of Kemess Newco for so
         long as the Capital Stock of Kemess Newco is subject to the Noteholder
         Liens, provided that (A) the Asset Sale is at a price at least equal
         to fair market value; (B) at least 85% of the consideration received
         therefrom by the Company or a Restricted Subsidiary is in the form of
         Cash or Cash Equivalents; (C) the Net Cash Proceeds are applied in
         accordance with Section 4.16(b) hereof, within 180 days of receipt
         thereof by the Company or a Restricted Subsidiary, as applicable;
         (D) if in accordance with Section 4.16(b) the Net Cash Proceeds are
         applied to or invested in Mining Related Asset Investments and the
         assets and properties sold were Collateral, the properties and assets
         acquired as a result of the Mining Related Assets Investment shall,
         upon such investment being made, be subject to the Noteholder Liens
         and the Kemess Newco Liens, without further action; and (E) the amount
         of Net Cash Proceeds that may be applied in accordance with this clause
         (iv) shall not exceed US$15 million in any calendar year;

         (v)        any assets and properties of the Company or a Restricted
         Subsidiary, other than assets described in clauses (i), (ii) and (iii)
         above, and other than assets which comprise or are in any way material
         to the Kemess South Mine or the Capital Stock of Kemess Newco for so
         long as the Capital Stock of Kemess Newco is subject to the Noteholder
         Liens, provided that (A) the Asset Sale is at a price at least equal
         to fair market value; (B) at least 85% of the consideration therefrom
         received by the Company or a Restricted Subsidiary is in the form of
         Cash or Cash Equivalents; (C) Net Cash Proceeds are applied to repay
         any Senior Indebtedness secured by the assets involved in such
         disposition or, if there is no such secured Senior Indebtedness,
         to repay Senior Indebtedness in each case within 180 days of receipt
         thereof by the Company or a Restricted Subsidiary, as applicable;
         (D) to the extent that there are any Net Cash Proceeds remaining
         after such application of proceeds to Senior Indebtedness or, to the
         extent that any such Senior Indebtedness so reduced is re-borrowed,
         such remaining Net Cash Proceeds or amounts re-borrowed from time to
         time shall be applied in accordance with Section 4.16(b) within the
         aforesaid 180 days of receipt in the case of such remaining Net Cash
         Proceeds or within 30 days of receipt in the case of money re-
         borrowed; and (E) if in accordance with Section 4.16(b) the Net Cash
         Proceeds are applied to or invested in Mining Related Asset
         Investments and the assets and properties sold were Collateral,
         the properties and assets acquired as a result of the Mining
         Related Assets Investment, shall upon such investment being made,
         be subject to the Noteholder Liens and the Kemess Newco Liens,
         without further action;


<PAGE>

                                      -18-

         (a.1) Nothing in this Section 4.16 shall limit or prohibit the Company
               or a Restricted Subsidiary, in the ordinary course of their
               respective businesses from; (A) selling inventory; (B)
               collecting, liquidating, selling, factoring or otherwise
               disposing of, accounts receivable or notes receivable; or (C)
               making cash payments (including scheduled repayments of
               Indebtedness permitted to be incurred under this Indenture) that
               are not otherwise prohibited by this Indenture, all free and
               clear of the Noteholder Liens and the Kemess Newco Liens;

         (a.2) The Trustee shall provide all such releases and discharges of 
               the Noteholder Liens and the Kemess Newco Liens as the Company 
               may request, at the Company's sole cost and expense, to give 
               effect to the foregoing provided that each such request is 
               accompanied by (I) an Officers' Certificate attesting that: 
               (1) the assets to be sold hereunder do not comprise and are 
               not in any way material to the Kemess South Mine; (2) the 
               assets to be sold hereunder come within the description of the 
               assets permitted to be sold in clauses (i), (ii) or (iii) 
               above; (3) with respect to clause (iii) above, the conditions 
               set out in paragraph (A) therein have been satisfied; (4) with 
               respect to clause (iv) above, the conditions set out in 
               paragraphs (A), (B) and (E) therein have been satisfied; (5) 
               with respect to clause (v) above, the conditions set out in 
               paragraphs (A) and (B) therein have been satisfied; as 
               applicable; and (II) if required by TIA Section 314(d) in the 
               case of any Asset Sales described above, a certificate or 
               opinion, which complies with the requirements of TIA Section 
               314(d), of an engineer, appraiser or other expert as to the 
               fair market value of the property subject to the Asset Sale or 
               the property acquired as a result of the Mining Related Asset 
               Investment. The Trustee, in confirming that the requirements 
               of this Section 4.16 and TIA Section 314(d) have been 
               satisfied, shall be fully protected in relying upon such 
               Officers' Certificates and expert's certificates or opinions, 
               as applicable. The Liens provided for herein shall be subject 
               to the provisions of Section 4A.14 hereof."

15.  Section 4.20 of the Indenture is hereby amended by deleting the ";" and all
     of the language that follows the ";" in clause (iii) thereof and by adding
     a "." in place of the ";" so deleted.

16.  Sections 4.21 and 4.22 of the Indenture are deleted in their entirety and
     the following sections are added at the end of Article 4:

     "SECTION 4.21 KEMESS NEWCO GUARANTEE AND ASSUMPTION

     The Company is hereby permitted to transfer the Kemess Mine to Kemess
     Newco provided that contemporaneously with such transfer the Trustee
     receives:

     (i)    the Kemess Newco Guarantee and Assumption which evidences Kemess
            Newco's assumption and agreement to observe and perform all the
            covenants and obligations of the Company under this Indenture;

<PAGE>
                                      -19-

     (ii)   the Kemess Newco Liens;

     (iii)  a fixed and specific Lien In Agreed Form in any debt, equity or
            other consideration issued by Kemess Newco to the Company upon
            the transfer of the Kemess Mine to Kemess Newco;

     (iv)   an Opinion of Counsel as to the enforceability of the Kemess
            Newco Guarantee and Assumption and the Kemess Newco Liens,
            subject to customary exclusions and exceptions; and

     (v)    an Officers' Certificate and an Opinion of Counsel, each stating
            that such transfer as described in this Indenture will, upon
            giving effect to such transfer, comply with the applicable
            provisions of the Indenture.

     SECTION 4.22 COMMODITY AGREEMENTS

     Except in connection with Existing Hedging Indebtedness, the Company
     shall not, and it shall not permit any Restricted Subsidiary, to enter
     into any Commodity Agreement, pursuant to which the Company or a
     Restricted Subsidiary has sold puts on gold, silver, copper or any other
     precious metals without simultaneously writing calls for a corresponding
     quantity of the same metal (and effectively creating a hedge) or enter
     into any other transaction which has the effect of creating a net long
     position on gold, silver, copper or any other precious metals produced
     by the Company or a Restricted Subsidiary."

     SECTION 4.23 INSURANCE

     The Company shall, and shall cause each Restricted Subsidiary to:

     (i)   keep its properties and assets insured and maintain public liability
           insurance in accordance with Section 4.05 (b);

     (ii)  provide the Trustee with certificates for all insurance policies,
           with proof of loss payable as required in subparagraph (iii) below,
           annually at the same time that the Company delivers its Officer's
           Certificates under section 4.06 (a); and

     (iii) provide that any loss under all such insurance policies (other than
           policies in respect of third party liability and business
           interruption insurance) in excess of Cdn. $500,000 shall be payable
           to the Trustee subject only to any prior rights which may be held in
           such proceeds by the holders of Permitted Liens, provided that if a
           Default or Event of Default has not occurred, the Company or such
           Restricted Subsidiary shall be entitled to receive such loss payment
           directly if the entire amount thereof is:

           (a)  used to repair or replace the lost or damaged property in
                question if the lost or damaged property relates to the
                Kemess Mine; or
  
           (b)  if the lost or damaged property does not in any way relate
                to the Kemess Mine either (x) used to repair or replace the
                lost or 

<PAGE>


                                           -20-

                damaged property in question or (y) after applying such loss
                payment or a portion thereof to the reasonable costs of any
                required remediation of the lost or damaged property, used
                and distributed as the proceeds of an "Asset Sale"
                pursuant to and in accordance with Section 4.16 hereof; and

           (c)  the Company or such Restricted Subsidiary delivers to the
                Trustee an Officer's Certificate attesting to the matters
                described in (a) or (b) above, as applicable.

          The Trustee shall provide all such releases and discharges from the
          Noteholder Liens and the Kemess Newco Liens of any proceeds or loss
          payment under insurance policies as the Company may request, at the
          Company's sole cost and expense, provided that each such request is
          accompanied by (i) the aforesaid Officers' Certificate attesting to
          the matters described in clauses (a) and (b) above and (ii) if
          required by TIA Section 314(d), a certificate or opinion, which
          complies with the requirements of TIA Section 314(d), of an engineer,
          appraiser or other expert as to the fair value of any property
          replacing any such lost or damaged property. The Trustee, in
          confirming that the requirements of this Section 4.23 and TIA
          Section 314(d) have been satisfied, shall be fully protected in
          relying upon such Officers' Certificate and expert's certificate
          or opinion, as applicable. The Trustee shall have no duty to
          examine, review or maintain copies of any policies of insurance
          required hereunder.

     SECTION 4.24 ROYALTY INTEREST AMENDMENT

     The Company shall not, without the prior consent of the Holders of a
     majority in aggregate principal amount of the outstanding Notes,
     amend the Royalty Agreement so as to increase the Initial Royalty
     Rate (as defined therein) or amend Section 2.2 and 7.2(c) thereof.

     SECTION 4.25 ENVIRONMENTAL MATTERS

     (i)    The Company shall maintain, and shall cause each of its
     Subsidiaries to maintain, a system to assure and monitor continued
     compliance with all Applicable Laws relating to the environment,
     which system shall include periodic reviews of such compliance.

    (ii)    The Company shall indemnify the Trustee and the Collateral
    Agent and their respective officers, directors, employees, agents
    and shareholders, and shall hold each of them harmless from and
    against any and all losses, liabilities, damages, costs, expenses
    and claims (including legal fees and expenses of its counsel and agents)
    suffered or incurred by such party in respect of (a) any violation by the
    Company or any Subsidiary of Applicable Law related to the environment
    including the assertion of any Lien thereunder, (b) the presence of
    any Hazardous Substance affecting the Collateral or any property adjacent
    thereto or (c) the release of any Hazardous Substance by the Company or any
    Subsidiary into the environment, provided that the foregoing indemnity
    shall not apply in connection with any negligence, willful misconduct or
    violation of any Applicable

<PAGE>

                                       -21-

     Law relating to the environment affecting the Collateral by the Trustee,
     the Collateral Agent or their respective agents after taking possession of
     the Collateral. The Company's obligations and indemnification under this
     section shall survive the satisfaction and release of the Security
     Documents and the repayment of the principal, interest and all other monies
     payable under this Indenture and the Notes. The Trustee shall hold the
     benefit of this indemnity in trust for those indemnified parties who are
     not parties to this Indenture.

17.  The following Article is to be inserted into the Indenture after Article 4,
     which Article shall read in its entirety as follows:

     "ARTICLE 4A - SECURITY

     SECTION 4A.01 - SECURITY

     As security for the due and punctual payment and performance of all of its
     obligations to the Noteholders under and in respect of this Indenture and
     the Notes, the Company shall execute and deliver to the Trustee or the
     Collateral Agent in each case for the benefit of the Holders of the Notes,
     valid and enforceable Liens against all present and after acquired
     property, assets and undertaking of the Company, except the Excluded
     Assets, all In Agreed Form, including without limitation, the following:

     (i)    a security debenture by the Company creating a fixed and floating 
            Lien on all of the Company's present and after acquired property, 
            assets and undertaking including, without limitation, fixed and 
            specific Liens on all property, assets and undertaking comprising 
            Kemess Mine;
     
     (ii)   a general security agreement by the Company creating a Lien on all 
            of the Company's present and after acquired property, assets and 
            undertaking;

     (iii)  a limited guarantee by APM of the obligations of the Company to 
            the Noteholders;

     (iv)   a general security agreement by APM creating a Lien on all of 
            APM's present and after acquired property, assets and undertaking;

     (v)    assignments of the Company's interests in all material mining 
            claims, concessions and leases in any way relating to the Kemess 
            Mine;

     (vi)   an assignment by the Company of its rights and interests in the 
            Kemess South Resources Limited Partnership;

     (vii)  if, and to the extent required by the Senior Debentureholders, an 
            assignment (and where required, consents to such assignment) by 
            the Company of its rights and interests in all Kemess Mine 
            construction contracts;

     (viii) if, and to the extent required by the Senior Debentureholders an 
            assignment (and, where required, consent to such assignment) by 
            the

<PAGE>
                                       -22-

            Company of its rights and interest in those agreements of the 
            Company which are material to the Kemess Mine and which have not 
            been fully performed by the parties thereto, including without 
            limitation, agreements which relate to construction underway or 
            proposed at Kemess Mine and including, without limitation, 
            royalty refining and shipping agreements;

     (ix)   pledges of all the shares in the capital of APM held by the 
            Company; and

     (x)    such other agreements and documents as may be necessary or 
            desirable to grant to the Trustee or the Collateral Agent valid 
            and enforceable Liens on all of the property, assets and 
            undertaking of the Company other than the Excluded Assets.

     Notwithstanding anything to the contrary contained in the foregoing, the 
     Company shall not be obligated to register the Liens against any real 
     property or mineral claims consisting of: (a) the Pamour Mine, the 
     Nighthawk Lake Mine and the mines generally known as Giant, HopeBrook 
     and Colomac; and (b) the Company's currently existing exploration 
     properties not in any way related to the Kemess Mine. The Company shall 
     register Liens against the Pamour Mine and the Nighthawk Lake Mine in 
     favor of the Trustee or the Collateral Agent should the Company at some 
     subsequent time grant Liens against (either or both) such mines to the 
     Senior Debentureholders. The Company shall insure that all of the 
     Security Documents are executed and delivered in accordance with this 
     Section 4A.01 such that the Liens created thereby are perfected in all 
     jurisdictions and at all times required to maintain such perfection by 
     the Trustee or the Collateral Agent for the benefit of the Noteholders.

     SECTION 4A.02 - EFFECT OF LIENS

     The Trustee or the Collateral Agent shall have and hold the Security 
     Documents and the Collateral and all rights hereby and thereby conferred 
     unto the Trustee and the Collateral Agent, and their respective 
     successors and assigns forever, but in trust, nevertheless, for the 
     equal benefit and security of the Holders of all Notes without any 
     preference or priority between them and with the powers and authorities 
     and subject to the terms and conditions set forth in this Indenture, the 
     Inter-Creditor Agreement and in the Security Documents. The Company 
     hereby represents and warrants that the Company has executed and 
     delivered, filed and recorded and will execute and deliver, file and 
     record, all instruments and documents, and has done and will do all such 
     acts and other things, at the Company's expense, as are necessary to 
     subject the Collateral to the Noteholder Liens and the Kemess Newco 
     Liens, as applicable. The Company will execute and deliver, file and 
     record all instruments and do all acts and other things as may be 
     reasonably necessary or advisable to perfect, maintain and protect the 
     Noteholder Liens and the Kemess Newco Liens, as applicable. The Company 
     shall furnish to the Trustee and the Collateral Agent, promptly after 
     the execution and delivery of the Security Documents and promptly after 
     the execution and delivery of any amendment hereto or thereto or any 
     other instrument of further assurance, an Opinion of Counsel stating 
     that, in the opinion of such counsel, subject to customary exclusions 
     and exceptions reasonably acceptable to the Trustee, either (i) the 
     Security Documents, any such amendment and all other instruments of 
     further assurance have been properly recorded, registered and 

<PAGE>

                                       -23-

     filed and all such other action has been taken to the extent necessary 
     to make effective the Liens intended to be created by the Security 
     Documents, and reciting the details of such action or referring to prior 
     Opinions of Counsel in which such details are given, or (ii) no such 
     action is necessary to make the Liens intended to be created by the 
     Security Documents effective.

     SECTION 4A.03 - EXCEPTION AS TO THE LAST DAY OF ANY LEASES.

     The mortgages, pledges and charges created under the Security Documents 
     shall not extend or apply to the last day of the term of any lease, 
     whether oral or written, or any agreement therefor, now held or 
     hereafter acquired by the Company or Restricted Subsidiary as tenant, 
     but should such mortgage, pledge and charge become enforceable and the 
     Trustee or the Collateral Agent determines or becomes bound to enforce 
     the same, the Company or Restricted Subsidiary shall thereafter stand 
     possessed of such last day and shall hold it in trust to assign the same 
     to any person who may acquire such term or the part thereof hereby 
     mortgaged, pledged or charged in the course of any enforcement of such 
     mortgage, pledge and charge or any realization of the subject matter 
     thereof.

     SECTION 4A.04 - EFFECTIVE DATE OF SECURITY.

     The Liens created under the Security Documents shall be effective upon 
     the date of the execution of the Security Documents.

     SECTION 4A.05 - DISCHARGE OF SECURITY.

     The Trustee and the Collateral Agent shall at the request and the 
     expense of the Company, release and discharge this Indenture and the 
     security created pursuant to the Security Documents (unless such 
     security has otherwise been released and discharged pursuant to the 
     terms hereof) and execute and deliver such instruments as it is advised 
     by an Opinion of Counsel are requisite for that purpose and to release 
     the Company from its covenants herein contained (other than provisions 
     related to the compensation and indemnification of the Trustee) upon the 
     discharge of the Indenture in accordance with the provisions of Article 
     Eight.

     SECTION 4A.06 - PURCHASE OFFER

     In the event that the Company, at any time before August 15, 2001, makes 
     an all cash offer to purchase (the "Company Purchase Offer") all of the 
     outstanding Notes at a purchase price not less than 105.5% of the 
     principal amount thereof plus all accrued and unpaid interest, if any, 
     to the date of purchase, and less than all of the outstanding Notes are 
     tendered in response to the Company Purchase Offer, the Company shall 
     complete the purchase of those Notes that are so tendered (which Company 
     Purchase Offer must be completed no later than 60 days after being made 
     by the Company) and, upon completion of the Company Purchase Offer, the 
     Company shall deliver to the Trustee an Officers' Certificate and an 
     Opinion of Counsel confirming such completion and the Trustee shall 

<PAGE>
                                       -24-

     release all of the property, assets and undertaking of the Company and 
     its Restricted Subsidiaries from the Noteholder Liens and the Kemess 
     Newco Liens. The Trustee shall provide all such releases and discharges 
     of the Noteholder Liens and the Kemess Newco Liens as the Company may 
     request, at the Company's sole cost and expense. Following the 
     completion of the Company Purchase Offer, interest on amounts 
     outstanding under the remaining Notes shall accrue at the rate of 11 % 
     per annum (subject to any default rate as set out in the Indenture) and 
     shall be paid in accordance with the terms hereof. In making a Company 
     Purchase Offer, the Company shall comply with all tender offer rules 
     applicable under state and Federal Securities laws in the United States 
     of America, including, but not limited to, Section 14(e) under the 
     EXCHANGE ACT and Rule 14e-1 thereunder, to the extent applicable to such 
     Company Purchase Offer. A Company Purchase Offer shall be conducted at 
     the expense of the Company in accordance with the redemption procedure 
     set out in Article 3. Any such Company Purchase Offer shall include a 
     summary of the provisions of this Section 4A.06, including, without 
     limitation, a description of the consequences of any Holder's failure to 
     tender such Holder's Notes. 

     SECTION 4A.07 CONFLICTS.

     Except with respect to Section 13.01, if a conflict or inconsistency 
     exists between a provision of this Indenture and a provision of the 
     Security Documents, the provision of this Indenture shall prevail. 
     Except with respect to Section 13.01 and except as between the Company, 
     the Holders, the Trustee and the Collateral Agent with respect to the 
     entitlements, protections and immunities of the Trustee contained in 
     Section 6.10 and Article Seven of the Indenture, if a conflict or 
     inconsistency exists between a provision of this Indenture or any of the 
     Security Documents and a provision of the Inter-Creditor Agreement, then 
     the provisions of the Inter-Creditor Agreement shall prevail. 
     Notwithstanding any provision of the Indenture, the Inter-Creditor 
     Agreement or the Security Documents, the provisions of Section 10.13 of 
     the Indenture shall remain in full force and effect.

     SECTION 4A.08 CO-OPERATE.

     Upon the occurrence and during the continuance of an Event of Default 
     and if the Trustee shall have determined or become bound to enforce the 
     Liens, the Company and any Restricted Subsidiaries shall from time to 
     time execute and do all such acts and things as the Trustee or any 
     Collateral Agent may, acting reasonably, require to facilitate the 
     realization of the Collateral or any part thereof, whether under this 
     Indenture or the Security Documents or by judicial proceedings, and to 
     give any notices and directions which the Trustee or any Collateral 
     Agent may, acting reasonably, consider expedient.

     SECTION 4A.09 NO MERGER

     The Security Documents shall not merge in any other security. No 
     judgment obtained by the Trustee shall in any way affect the provisions 
     of this Indenture or any of the Security Documents. For greater 
     certainty, no judgment obtained by the Trustee shall in any way affect 
     the obligation of the Company to pay principal, fees and interest at the 
     rates, times and in the manner provided in this Indenture

<PAGE>
                                       -25-

     and the Notes and to compensate and indemnify the Trustee, including, 
     without limitation, each Collateral Agent as provided in this Indenture.

     SECTION 4A.10 ADDITIONAL SECURITY

     The Company hereby covenants and agrees to execute and deliver or cause 
     to be executed and delivered to or for benefit of the Trustee and the 
     Collateral Agent such additional Security Documents In Agreed Form as 
     the Company or any Restricted Subsidiary grants to the Senior 
     Debentureholders from time to time.

     SECTION 4A.11 FURTHER ASSURANCES -SECURITY

     From time to time the Company shall, at the expense of the Company, take 
     or cause to be taken such action (including, without limitation, the 
     provision of information and access to property) and execute and deliver 
     or cause to be executed and delivered to the Trustee or the Collateral 
     Agent, such agreements, convenances, deeds and other documents and 
     instruments as the Trustee, at the written request of the Holders of a 
     majority in principal amount of the outstanding Notes, shall reasonably 
     request in furtherance of granting to the Trustee or the Collateral 
     Agent valid and enforceable Liens on all of the Company's present and 
     after acquired property, assets and undertaking to which they are 
     entitled hereunder and the Company shall, at the expense of the Company, 
     register, file or record the same (or a notice or financing statement in 
     respect thereof) in all offices and in all jurisdictions where such 
     registration, filing or recording is necessary or advisable to 
     constitute, perfect and maintain such Liens; provided however that any 
     such Liens shall be In Agreed Form and shall be subject and subordinate 
     to present and future Permitted Liens in such property, assets and 
     undertaking held by the Senior Secured Parties. The Company shall renew 
     and amend such recordings, filings or registrations from time to time as 
     and when required to keep them in full force and effect. The Company 
     shall from time to time, if and when required to do so by the Trustee 
     upon the request of the Holders of a majority in principal amount of the 
     outstanding Notes and on the Fourth Supplemental Closing Date, furnish 
     the Trustee with an Opinion of Counsel as to compliance with the 
     provisions of Section 4A.02 and this Section 4A.11. The Trustee or the 
     Collateral Agent is hereby authorized to enter into such further and 
     other documents as may reasonably be required to permit perfection of 
     the Liens in the Collateral granted by this Indenture or the Security 
     Documents or to permit registration of instruments of further assurance 
     or collateral mortgages.

     SECTION 4A.12 - PARTIAL DISCHARGES

     Provided that (i) there shall have been no Default or Event of Default 
     that has occurred and is continuing; and (ii) the Company delivers to 
     the Trustee an Officers' Certificate to which are attached (A) a 
     confirmation in writing from the Senior Debentureholders that the 
     aggregate principal amount then outstanding under the Senior Secured 
     Debentures at such time (other than interest, fees and other amounts 
     payable under or in respect of the Senior Secured Debentures and the 
     Senior Debentures Security) is equal to or less than U.S.$45 million; 
     and (B) a confirmation in writing from the lenders under the Working 
     Capital Facility

<PAGE>
                                       -26-

     confirming the maximum amount available thereunder and the actual 
     Indebtedness of the Company thereunder at such time and such Officers' 
     Certificate certifies that the aggregate principal amount of the 
     Indebtedness of the Company under the Senior Secured Debentures, as 
     permanently reduced, and the greater of the maximum amount available 
     under in respect of the Working Capital Facility and the actual 
     Indebtedness of the Company under or in respect of the Working Capital 
     Facility do not in aggregate and on a permanent basis exceed U.S.$45 
     million, the Trustee shall, upon written request and at the expense of 
     the Company, release and discharge the Noteholders' Liens from the 
     assets and properties of the Company and its Restricted Subsidiaries, 
     other than the Kemess South Mine. The Trustee, in confirming that the 
     requirements of this Section 4A.12 (including, without limitation, the 
     absence of a continuing Default or Event of Default) have been 
     satisfied, shall be entitled to receive and shall be fully protected in 
     relying upon an Officers' Certificate and an Opinion of Counsel.

     SECTION 4A.13 PRIORITY.

     Subject to Sections 4A.14 and 4A.15, any reference to Permitted Liens 
     contained in this Indenture or the Security Documents in and of itself 
     shall not expressly or by implication result in any Permitted Liens 
     ranking ahead of the charges or security interests created pursuant to 
     this Indenture or the Security Documents.

     SECTION 4A.14 - PRIORITY OF LIENS

     Notwithstanding the time of granting of Permitted Liens, or the time of 
     registering, filing or recording the same (or a notice or financing 
     statement in respect thereof) the Permitted Liens and beneficial rights 
     of each of the Senior Secured Parties in the assets, properties and 
     undertaking of the Company and its Restricted Subsidiaries and the 
     proceeds thereof shall be senior and prior to the Noteholder Liens, 
     Kemess Newco Liens and beneficial rights of the Trustee, the Collateral 
     Agent and any Noteholder therein; and (ii) the Noteholder Liens, Kemess 
     Newco Liens and beneficial rights of the Trustee, the Collateral Agent 
     and any Noteholder in the assets, properties and undertaking of the 
     Company and its Restricted Subsidiaries shall be and are hereby 
     subordinated and postponed to the Liens and beneficial rights of each of 
     the Senior Secured Parties therein.

     Each Holder of Notes, by its acceptance of them, authorizes and 
     expressly directs the Trustee and the Collateral Agent on its behalf to 
     take such action as may be necessary or appropriate to effectuate, as 
     between the Senior Secured Parties and the Holders of Notes, the 
     aforesaid subordination and postponement of the Noteholder Liens, Kemess 
     Newco Liens and beneficial rights of the Trustee, the Collateral Agent 
     and any Noteholder therein, and appoints each of the Trustee and the 
     Collateral Agent its attorney-in-fact for such purposes.

     SECTION 4A.15 CONFIRMATION OF SUBORDINATION ON BEHALF OF HOLDERS

     Notwithstanding the generality of Section 4A.14, the Trustee and the 
     Collateral Agent are hereby authorized and directed to execute and 
     deliver to the Company, APM, the Collateral Agent, the Senior 
     Debentureholders and the holders of the

<PAGE>
                                       -27-

     Royalty Interest, the Inter-Creditor Agreement and the Security 
     Documents. The terms and provisions contained in the Inter-Creditor 
     Agreement shall constitute, and are hereby expressly made, a part of 
     this Indenture as if fully set forth herein. To the extent applicable, 
     the Company and the Trustee, by their execution and delivery of the 
     Fourth Supplemental Indenture, expressly agree to such terms and 
     provisions and to be bound thereby; provided, that the Trustee and the 
     Collateral Agent have executed and delivered the Inter-Creditor 
     Agreement and the Security Documents in reliance upon Officers' 
     Certificates and Opinions of Counsel and at the direction of Holders 
     contained in the Consents. Any appointment of a successor Trustee or a 
     Collateral Agent from and after the date hereof shall include the 
     express agreement of such successor, Trustee or Collateral Agent to be 
     bound by the terms and provisions of the Inter-Creditor Agreement and 
     the Security Documents. The Trustee or the Collateral Agent shall, from 
     time to time, at the written request of the Company, confirm in writing 
     to the Company, APM, the Collateral Agent, the Senior Debentureholders 
     and the holders of the Royalty Interest, that the Trustee's or the 
     Collateral Agent's rights and remedies in respect of the Noteholder 
     Liens and the Kemess Newco Liens are subordinated and postponed in the 
     manner described in the Inter-Creditor Agreement to Liens provided for 
     in the Royalty Debenture and the Senior Debentures Security until such 
     time as all of the Obligations of the Company and its Restricted 
     Subsidiaries secured by the Senior Debentures Security and the Royalty 
     Debenture are satisfied in full. 

     SECTION 4A.16 REPLACEMENT INTER-CREDITOR AGREEMENT

     In the event of any Refinancing of the Senior Secured Debentures, 
     including under a Working Capital Facility, the Trustee, the Collateral 
     Agent, the Company, Kemess Newco, APM and the Collateral Agent shall, at 
     the expense of the Company enter into a new inter-creditor agreement In 
     Agreed Form that provides to the Holders at least the same rights and 
     benefits as set out in Article 5 of the Inter-Creditor Agreement or, at 
     the expense and at the request of the Company, enter into a new 
     inter-creditor agreement In Agreed Form with the Company and the holders 
     of the Refinanced Senior Secured Debentures on substantially the same 
     terms and conditions as the Inter-Creditor Agreement, including, without 
     limitation, at least the same rights and benefits as set out in Article 
     5 thereof, and shall deliver such subordinations and postponements of 
     the registered Noteholder Liens and Kemess Newco Liens as may be 
     necessary or desirable to effect the subordinations and postponements as 
     described in such new inter-creditor agreement, provided that the 
     Trustee shall not be required to enter into any new inter-creditor 
     agreement which affects its rights, protections or immunities under this 
     Indenture or otherwise. 

     4A.17 ACKNOWLEDGEMENT

     For greater certainty, the entering into by any person who is a secured 
     creditor of the Company of an agreement by which such person 
     acknowledges the priority of the security for the Royalty Agreement and 
     the Senior Secured Debentures, agrees not to exercise remedies with 
     respect to its collateral for a period of time and acknowledges the 
     priority of remedies with respect to the Royalty Security (as defined in 
     the Inter-Creditor Agreement) and the Senior Debentures Security does

<PAGE>
                                       -28-

     not cause the amounts owing to such person to be subordinate in the 
     right of payment to any other Indebtedness.

18.  Section 5.01 is hereby amended by inserting:

     (a)  after the word "merge" in the second line the following:

          "(including, without limitation, an amalgamation under the BUSINESS 
          CORPORATIONS ACT (Ontario) or comparable legislation in any other 
          jurisdiction in Canada (including pursuant to federal legislation) 
          or similar legislation in any other jurisdiction (an 
          "Amalgamation"))"; and

     (b)  after the words "the Company" in each of the 10th line of the first 
          paragraph, the 10th last line of the first paragraph and the 4th 
          last line of the last paragraph the following words: "(or in the 
          case of an Amalgamation, the amalgamated corporation)".

19.  Section 6.01 of the Indenture is hereby amended by deleting clause 6
     thereof and replacing it with the following:

          "(6) The company or any of its Restricted Subsidiaries pursuant to 
          or within the meaning of any Bankruptcy Law: (a) commences a 
          voluntary case including, without limitation, the filing of a 
          proposal or notice of intention to file a proposal under the 
          BANKRUPTCY AND INSOLVENCY ACT (Canada) (the "BIA"), as amended from 
          time to time, or commences proceedings under the COMPANIES 
          CREDITORS' ARRANGEMENT ACT (Canada) (the "CCAA"), as amended from 
          time to time; (b) consents to the entry of an order for relief 
          against in an involuntary case; (c) consents to the appointment of 
          a Custodian of it or for all or substantially all of its property 
          or a Custodian of it or for all or substantially all of its 
          property is appointed by a Person other than a court of competent 
          jurisdiction and such appointment remains unstayed and in effect 
          for five consecutive days; (d) makes a general assignment for the 
          benefit of its creditors; or (e) admits in writing its inability to 
          pay its debts as they become due."

20.  The first paragraph of Section 6.03 of the Indenture is hereby amended 
     by adding at the conclusion of the paragraph the words "including, 
     without limitation, the enforcement of the Liens and realization of the 
     Collateral under the Security Documents, subject to the Inter-Creditor 
     Agreement."

21.  Section 6.05 of the Indenture is hereby deleted and the following 
     substituted therefor:

          "Subject to Section 2.09, the Holders of at least a majority in 
          aggregate principal amount of the outstanding Notes, may direct the 
          time, method and place of conducting any proceeding for any remedy 
          available to the Trustee or the Collateral Agent or exercising any 
          trust or power conferred on either of them, including without 
          limitation, any remedies provided for in Section 6.03 and

<PAGE>
                                       -29-

          upon receiving security or indemnity from such Holders satisfactory 
          to the Trustee and the Collateral Agent against all costs, expenses 
          and liabilities to be incurred, the Trustee or the Collateral 
          Agent, without in any way limiting its rights or remedies pursuant 
          to this Indenture or under the Security Documents shall exercise 
          one or more of the powers of enforcement available to it at law, in 
          equity or by contract including under the terms of this Indenture 
          or the Security Documents. Subject to Section 7.01, however, the 
          Trustee or the Collateral Agent may refuse to follow any direction 
          that the Trustee or the Collateral Agent reasonably believes 
          conflicts with any laws, this Indenture or the Inter-Creditor 
          Agreement, that the Trustee or the Collateral Agent determines may 
          be unduly prejudicial to the rights of another Noteholder, or that 
          may involve the Trustee or the Collateral Agent in personal 
          liability; provided that the Trustee or Collateral Agent may take 
          any other action deemed proper by the Trustee or the Collateral 
          Agent which is not inconsistent with such direction. Furthermore 
          the Trustee and the Collateral Agent shall have the right if 
          directed by those Holders of at least a majority in aggregate 
          principal amount of the outstanding Notes to take private action or 
          to take judicial proceedings instead of such private proceeding."

22.  Section 6.10 of the Indenture is hereby amended as follows: (1) by 
     deleting the reference  to "this Article Six" in the second line and 
     substituting "this Article Six or Article 4A hereof or any of the 
     Security Documents; and by inserting the words "or the Collateral Agent" 
     after the word "Trustee" in the preamble and the "First" and "Second" 
     paragraphs thereof. 

23.  Section 6.11 of the Indenture is hereby amended by adding the words "or 
     the Collateral Agent" after the word "Trustee" each time it appears in 
     that section other than the second time in which case the words "or as 
     Collateral Agent" shall be inserted.

24.  Article 6 of the Indenture is hereby amended by adding section 6.12 as 
     follows:

     6.12 PURCHASE OF SENIOR SECURED DEBENTURES

     The Holders and the holders of a beneficial interest in the Notes (the 
     "Beneficial Holders") as at the Purchase Event Record Date (collectively 
     the "Eligible Holders" and individually an "Eligible Holder) shall each, 
     on a non-duplicative basis, have a one time right on the occurrence of a 
     Purchase Event to, on a pro rata basis (which right may be taken by 
     those Eligible Holders who wish to do so to the extent other Eligible 
     Holders do not participate), purchase all, but no less than all, of the 
     Senior Secured Debentures and the Senior Debentures Security. The 
     Inter-Creditor Agreement sets out the circumstances and periods of time 
     within which such rights may be exercised and in which they expire, the 
     basis of the calculation of the purchase price to be paid for the Senior 
     Secured Debentures and the Senior Debentures Security (the "Purchase 
     Event Price"). To exercise the purchase right, Holders must comply with 
     the procedures set out in the Inter-Creditor Agreement and in Section 
     6.13 hereof. It is hereby acknowledged that the Senior Debentureholders 
     shall have no liability or obligation to any Person in respect of the 
     foregoing other than to sell and deliver 

<PAGE>
                                       -30-

     the Senior Secured Debentures and the Senior Debentures Security in 
     accordance with the terms of, and subject to compliance by the Agent (as 
     hereinafter defined) of the terms of, the Inter-Creditor Agreement; 
     provided, that the Agent shall have no duty hereunder to comply with the 
     terms of the Inter-Creditor Agreement except in accordance with Section 
     6.13 hereof.

     6.13 PURCHASE EVENT PROCEDURE

     (a) As soon as practicable but in no event later than the day of 
     publication by the Trustee of the notice on Bloomberg (the 
     "Publication") described in Section 4.06(f) hereof, Chase Manhattan 
     Trust Company, National Association or its successor hereunder, acting 
     solely in its capacity as agent hereunder and not in its capacity as 
     Trustee or in any other fiduciary capacity (the "Agent"), shall request 
     from the Senior Debentureholders, in accordance with the Inter-Creditor 
     Agreement, the Purchase Event Price as of such day (the "Initial 
     Purchase Event Price"). The Agent may conclusively rely on any such 
     information and any additional information provided to the Agent by the 
     Senior Debentureholders for all purposes hereunder. The Agent shall not 
     be required to furnish such information to any Person other than an 
     Eligible Holder who has provided the certificate described in Section 
     6.13(b).

     (b) Each Eligible Holder who elects to purchase at least its respective 
     pro rata share of the Senior Secured Debentures and the Senior 
     Debentures Security (collectively, the "Senior Position") shall deliver 
     to the Agent, no later than 4:30 p.m. on the third day following the 
     Publication, each of the following: (i) a certificate, with signature 
     guarantee, of the Eligible Holder or a duly qualified officer of the 
     Eligible Holder, upon which certificate the Agent may conclusively rely, 
     which certifies (1) that such holder is an Eligible Holder; (2) the 
     principal amount of the Notes held by such Eligible Holder; (3) that 
     such Eligible Holder elects to purchase at least such Eligible Holder's 
     pro rata share of the Senior Position, and, if applicable, that such 
     Eligible Holder may elect to purchase additional unsubscribed shares of 
     such Senior Position, if available for purchase; (4) that the Eligible 
     Holder irrevocably directs the Agent to deliver the Acceptance Notice 
     (as defined in the Inter-Creditor Agreement) and to purchase the Senior 
     Position on the earliest date on which all of the conditions to purchase 
     hereunder have been satisfied, if such date is on or prior to the 
     expiration date (the "Final Closing Date") of the right to purchase 
     under the Inter-Creditor Agreement, for and on behalf of all Subscribing 
     Holders (defined hereinafter) with immediately available funds provided 
     by such Subscribing Holders, but with no duty by the Agent to advance 
     funds to make such purchase, on the terms and subject to the conditions 
     of the Inter-Creditor Agreement and this Section 6.13; (5) an agreement 
     to irrevocably deliver such Eligible Holder's pro rata share of the 
     Initial Purchase Event Price to the Agent by federal funds transfer 
     within one day of such Eligible Holders receipt of notice, from the 
     Agent or otherwise, of the Initial Purchase Event Price (but in no event 
     later than the Initial Deposit Time (defined hereinafter)), which notice 
     the Agent shall provide to such Eligible Holder by facsimile no later 
     than the second day following receipt of such Eligible Holder's fully 
     conforming certificate (but only if the Agent has received notice of the 
     Initial Purchase Event Price from the Senior Debentureholders); 
     provided, that in lieu of the procedure in this clause (5), such 
     Eligible Holder may fulfill this condition.

<PAGE>
                                         -31-

     by irrevocably depositing, on the date of delivery of the certificate and
     for the account of the Agent, a federal funds transfer of at least its pro
     rata share of the Initial Purchase Event Price; (6) such Eligible Holder's
     agreement to pay on a pro rata basis with the other Eligible Holders the
     reasonable legal fees and expenses, if any, of the Agent hereunder, as and
     when incurred, and to indemnify and hold the Agent harmless hereunder for
     any expenses, claims, liabilities, outlays, fees, taxes and any other
     disbursements or costs incurred in connection herewith (collectively with
     such legal fees and expenses, "Costs"), unless any such Cost is adjudicated
     to have resulted from the gross negligence or wilful misconduct of the
     Agent; (7) wire transfer and facsimile communication instructions for such
     Eligible Holder (which the Agent shall use for all purposes hereunder); and
     (8) an acknowledgement that the Transfer Documents (as hereinafter defined)
     and the Agent Transfer Documents (as hereinafter defined) must be delivered
     to the Agent not later than 3 Business Days before any Closing (as
     hereinafter defined). Each Eligible Holder who has complied with all of the
     above requirements (a "Subscribing Holder"), including without limitation,
     delivery of any executed agreement required under clause (4) above and any
     deposit of funds required under clause (5) above, no later than 4:30 p.m.
     on the fifth day after the Publication (the "Initial Deposit Time"), but no
     other Holder or Eligible Holder, shall be entitled to subscribe for any
     unsubscribed portion of the Purchase Event Price (the "Unsubscribed
     Portion").

     (c) The Agent shall request, on such fifth day, from the Senior
     Debentureholders, the Purchase Event Price calculated as of the sixth day
     after the Publication (the "Revised Purchase Event Price"). The Agent shall
     provide, if and when received from the Senior Debentureholders, any such
     information, together with the amount of the estimated Unsubscribed Portion
     calculated as of the Initial Deposit Time which amount is equal to the
     difference between the funds on deposit and the Revised Purchase Event
     Price (if available, and otherwise the Initial Purchase Event Price) to
     each Subscribing Holder within one day following receipt of notice of the
     Revised Purchase Event Price, but in the absence of receipt of such notice,
     shall provide the amount of such estimated Unsubscribed Portion to
     Subscribing Holders no later than the second day following the Initial
     Deposit Time.

     Any Subscribing Holder, or group of Subscribing Holders, may subscribe for
     all or a portion of the Unsubscribed Portion by depositing immediately
     available funds with the Agent, together with an accounting therefor
     satisfactory to the Agent, no later than 4:30 p.m. on the eighth day after
     the Publication (the "Final Deposit Time"). Such Subscribing Holders will
     cooperate with the Agent in providing such accounting. Such deposit(s)
     shall be calculated by the Subscribing Holders on a pro rata basis or on
     any basis on which the Subscribing Holders may agree, time being of the
     essence.

     (d) No later than the fourth day preceding the Final Closing Date, the
     Agent shall request from the Senior Debentureholders revised information
     concerning the Purchase Event Price, and upon any receipt thereof, the
     Agent shall provide such information, together with confirmation of the
     amount on deposit with the Agent and available to effect the purchase, to
     the Subscribing Holders (the latter information being provided no later
     than 4:30 p.m. on the third day preceding the

<PAGE>
                                       -32-

     Final Closing Date). If any Purchase Event Price received from the Senior
     Debentureholders is an estimate, the Agent shall so advise the Subscribing
     Holders. The Agent shall have no further duty to initiate communication
     with Subscribing Holders; however, Subscribing Holders may deposit
     additional immediately available funds with the Agent, together with an
     accounting therefor, on any basis on which Subscribing Holders may agree,
     no later than 12:00 p.m. on the day preceding the Final Closing Date. The
     Agent shall have no duty under Section 6.13(b), (c) or (d) hereof to verify
     the sufficiency of, assist with or confirm calculation of any deposits made
     by Subscribing Holders hereunder.

     (e) To the extent the Agent is fully funded to pay the Purchase Event 
     Price, as such Purchase Event Price is confirmed to the Agent as of the 
     earlier of the first day on which all conditions hereunder have been 
     satisfied and the Final Closing Date, whichever is operative, and, if at 
     least three Business Days prior to the Closing (as hereinafter defined), 
     the Agent has received from or on behalf of Subscribing Holders (but 
     with no obligations on the Agent to prepare any such documentation), 
     documentation satisfactory to the Agent, in its sole judgment, to 
     accomplish the purchase, including without limitation documents of 
     assignment and transfer from the Senior Debentureholders to the Agent 
     fully complying with the Inter-Creditor Agreement (the "Transfer 
     Documents") and documents of assignment and transfer from the Agent to 
     the Subscribing Holders (the "Agent Transfer Documents") fully complying 
     with the provisions of this Section 6.13 (each of which are specific 
     conditions precedent hereunder to the exercise of the purchase right by 
     the Agent and all of which shall be prepared by or on behalf of and at 
     the expense of the Subscribing Holders), the Agent shall purchase the 
     Senior Position by delivering the Acceptance Notice and a certified 
     check drawn on the Agent or an affiliate of the Agent to or upon the 
     order of the Senior Debentureholders, but only upon contemporaneous 
     delivery of fully executed Transfer Documents from the Senior 
     Debentureholders (the "Closing") and with no duty by the Agent to 
     advance any funds; provided, that the Agent shall have no responsibility 
     or liability whatsoever to any Person for the content, adequacy, 
     validity, sufficiency, condition of title or priority of any of such 
     documentation or of any collateral. Upon payment of the Agent's Costs, 
     the Agent shall promptly execute and deliver the Agent Transfer 
     Documents to the Subscribing Holders and shall return any unexpended 
     funds to the Subscribing Holders entitled thereto, based solely on the 
     accounting and instructions for payment provided by such Subscribing 
     Holders and thereupon the Agent shall be fully discharged hereunder.

     (f) To the extent the Agent is not fully funded to pay the Purchase 
     Event Price by 12:00 p.m. on the Final Closing Date, based on the latest 
     information received from the Senior Debentureholders or the other 
     conditions precedent to Closing hereunder have not been satisfied, the 
     Agent shall not deliver the Acceptance Notice and shall not purchase the 
     Senior Position and the right to purchase under the Inter-Creditor 
     Agreement shall expire. The Agent shall incur no liability for a failed 
     purchase unless adjudicated to have resulted from its gross negligence 
     or wilful misconduct. In that case and upon payment of the Agent's Costs 
     to the satisfaction of the Agent, the Agent shall return all funds on 
     deposit with the Agent to the Subscribing Holders entitled thereto, 
     based on the accounting and payment

<PAGE>
                                       -33-

     instructions provided to the Agent by such Holders and thereupon shall 
     be fully discharged hereunder.

     (g) Notwithstanding anything to the contrary contained herein, the duty 
     to compensate, reimburse and indemnify the Agent under this Section 6.13 
     shall be an obligation of the Company; provided, that the Agent may pay 
     or reimburse itself from funds on deposit with it and, to the extent 
     such funds are insufficient and payment arrangements satisfactory to the 
     Agent have not been made, the Agent may refuse to deliver the Acceptance 
     Notice and purchase the Senior Position and shall incur no liability to 
     any Person for having done so. If at any time prior to the Closing or if 
     at any time after the purchase of the Senior Position is completed but 
     prior to the delivery of the Agent Transfer Documents, any controversy 
     or dispute arises among any Holders, including without limitation any 
     Eligible Holders, or between the Senior Debentureholders and the Agent 
     and/or any Holders with respect to any matter whatsoever contemplated in 
     this Section 6.13, the Agent shall not be required to determine the same 
     or do any other act or thing, but shall instead interplead any funds 
     deposited with it and/or any Agent Transfer Documents held by it in a 
     court of competent jurisdiction. Each Holder, including without 
     limitation each Eligible Holder, shall be bound by any determination of 
     such court and the Agent shall incur no liability whatsoever to any 
     Person for, and shall be held harmless from by the Subscribing Holders, 
     any failure to complete the purchase or deliver the Agent Transfer 
     Documents.

     (h) All times expressed herein shall be New York times. Any reference to 
     a day or date that does not fall on a Business Day shall be deemed a 
     reference to the next succeeding Business Day as defined in the 
     Inter-Creditor Agreement.

     (i) The Trustee shall have no obligation or liability whatsoever to any 
     Person with respect to the foregoing other than its duties under Section 
     4.06 with respect to the Publication. The Trustee shall not be deemed to 
     have notice of any Purchase Event in the absence of actual notice 
     thereof.

     (j) The Agent Transfer Documents shall provide only that the Agent 
     represents and warrants in favor of the Subscribing Holders as at the 
     Closing Date that the Senior Position has not been sold, assigned or 
     encumbered by the Agent. The Agent shall not provide any other or 
     additional representations, warranties or covenants, expressed or 
     implied and the Senior Position shall be purchased by the Subscribing 
     Holders on a (i) non-recourse; (ii) "as is, where is" basis, other than 
     as aforesaid.

     (k) Whether or not a Purchase Event has occurred hereunder, the Agent 
     shall have only those duties as are expressly set out in this Section 
     6.13 and nothing herein shall be construed to impose any other or 
     further duties; it being recognized that the services of the Agent are 
     necessary only to comply with the Inter-Creditor Agreement in order to 
     facilitate the purchase; provided, that in furtherance and not in 
     limitation of the foregoing, the Agent shall have no duty whatsoever to 
     incur liability, financial or otherwise, to any Person, to advance any 
     funds or to otherwise act or refrain from acting if, in the sole 
     judgment of the Agent, any such act or failure to act would cause the 
     Agent to incur risk or liability. Notwithstanding anything to the 
     contrary contained herein, any

<PAGE>
                                       -34-

     agreement to indemnify the Agent on the terms and conditions herein 
     shall include, without limitation, indemnification for any Cost imposed 
     on the Agent under the Inter-Creditor Agreement.

     (l) In performing its duties as aforesaid, the Agent is acting as an 
     agent for the Holders and Beneficial Holders and is not acting in its 
     capacity as Trustee or fiduciary hereunder. In furtherance and not in 
     limitation of any provision of this Section 6.13, neither the Trustee 
     nor the Agent shall have any responsibility for or duty to determine (i) 
     the identity or eligibility of any Person as a Holder, Beneficial 
     Holder, or Eligible Holder, (ii) the irrevocable nature of any deposit 
     hereunder, (iii) the amount of the Purchase Event Price or (iv) the 
     effectiveness under the Inter-Creditor Agreement of any Acceptance 
     Notice or delivery of payment thereunder, or (v) the adequacy of 
     consideration, or lack thereof, to the Holders for the Purchase Event 
     Price. Neither the Trustee nor the Agent shall have any duty or 
     responsibility to any Person with respect to the disclosure of any 
     information concerning the Senior Secured Debentures and the Senior 
     Debentures Security to any Holder or Beneficial Holder.

     (m)  In no event shall the Agent be liable to any Person for special,
     indirect or consequential damages of any nature whatsoever.

     (n) The Subscribing Holders who in the aggregate are entitled to buy at
     least 51% of the Senior Position based on their pro rata share of
     subscriptions held by the Agent as at the Initial Deposit Date may, without
     notice, but with the consent of the Trustee and the Agent, in their sole
     discretion, amend the foregoing timetable and procedures so as to give
     effect to the delivery of an Acceptance Notice in accordance with the terms
     of the Inter-Creditor Agreement.

25.  Section 7.05 of the Indenture is hereby deleted and the following
     substituted therefore:

          "If a Default or an Event of Default occurs and is continuing, the 
          Trustee shall mail to each Noteholder notice of the uncured 
          Default or Event of Default within 30 days after the later of the 
          date such Default, or Event of Default occurs or the date on which 
          the Trustee shall have received written notice of such Default or 
          Event of Default from the Company or any of the Holders, unless a 
          Trust Officer has actual knowledge of any such event, in which 
          case, such notice shall be given within 30 days of such actual 
          knowledge being obtained. Except in the case of a Default or an 
          Event of Default in payment of principal of, or interest on, any 
          Note, including an accelerated payment and the failure to make 
          payment on the Change of Control Payment Date pursuant to a Change 
          of Control Offer or on the Proceeds Purchase Date pursuant to a Net 
          Proceeds Offer and, except in the case of a failure to comply with 
          Article V hereof, a Default or Event of Default that also is a 
          Purchase Event, the Trustee may withhold the notice if and so long 
          as its Board of Directors, the executive committee of its Board of 
          Directors or a committee of its directors and/or Trust Officers in 
          good faith determines that withholding the notice is in the 
          interest of the Noteholders."

<PAGE>
                                       -35-

26.  (a)  Section 7.07 of the Indenture is hereby amended and supplemented by
     adding the following new paragraphs before the penultimate paragraph
     thereof as follows:

          "In furtherance and not in limitation of anything provided in this 
          Section 7.07 or otherwise in the Indenture, the Company shall pay 
          reasonable compensation, in accordance with this Section 7.07, to 
          the Trustee and its agents, together with the fees and expenses of 
          counsel to the Trustee or any agent, for their services under or in 
          connection with the Inter-Creditor Agreement (including for 
          purposes of this Section 7.07, any other or successor 
          inter-creditor agreements hereunder) and any Security Document. The 
          Company shall indemnify, in accordance with this Section 7.07, the 
          Trustee and its agents and employees, stockholders, directors and 
          officers for, and hold them harmless against, any and all claims, 
          damages, demands, expenses, liabilities, charges and taxes of any 
          character or nature whatsoever relating to this Indenture, the 
          Notes, such Inter-Creditor Agreement or the Security Documents; the 
          administration of the Trustee's or any agent's duties hereunder or 
          under the Inter-Creditor Agreement or the Security Documents; the 
          condition, occupancy, use, possession, conduct or management of or 
          any work done in or about any of the assets or property of the 
          Company or the planning, design, construction, rehabilitation or 
          improvement of any such assets or property, subject only in each 
          case to the exception in the second paragraph of this Section 7.07 
          for actions caused by the negligence, bad faith or willful 
          misconduct of the Trustee or any agent; or for any untrue statement 
          or alleged untrue statement of any material fact or omission or 
          alleged omission to state a material fact necessary to make the 
          statements made in any statement, information or material furnished 
          by or on behalf of the Company to the Trustee or any other Person, 
          including without limitation, to any Holder of the Notes or in 
          connection with any information included in any solicitation of 
          consents of Holders to any amendment, supplement or waiver of or in 
          connection with this Indenture, the Inter-Creditor Agreement or the 
          Security Documents. The Company and the Holders hereby acknowledge 
          the Trustee, its agents, employees, stockholders, directors and 
          officers have not participated in the preparation or dissemination 
          of any such statement, information, material or solicitation. The 
          Trustee makes no representation or warranty, express or implied, as 
          to the title, value, design, compliance with specifications of 
          legal requirements, quality, durability, operation, condition, 
          merchantability or fitness for any particular purpose for any of 
          the property, assets or undertakings of the Company now or 
          hereafter subject to any Security Document. In no event shall the 
          Trustee be liable for incidental, indirect, special or 
          consequential damages to any Person in connection with or arising 
          from the existence or use of any such property, assets or 
          undertakings; and

<PAGE>

                                    -36-


     (b)  References to the "Trustee" in Section 7.07 shall include the 
          Trustee's agents and any Collateral Agent and the penultimate 
          paragraph of Section 7.07 is amended to add "including without 
          limitation pursuant to the Security Documents", after the word 
          "Trustee" in the third line thereof.

27.  Article 7 of the Indenture is hereby amended by adding at the end 
     thereof the following section, which shall read in its entirety as follows:

     "SECTION 7.12 CO-COLLATERAL TRUSTEE, SEPARATE COLLATERAL TRUSTEE,
     COLLATERAL AGENTS

     (1)  If at any time or times it shall be necessary or prudent in order 
          to conform to any law of any jurisdiction in which any of the 
          Collateral shall be located, or to avoid any violation of law or 
          the imposition on the Trustee of taxes by such jurisdiction not 
          otherwise imposed on the Trustee, or the Company or the Trustee 
          shall be advised by an Opinion of Counsel, that it is necessary or 
          prudent in the interest of the Noteholders or the Holders of a 
          majority in principal amount of the outstanding Notes shall, in 
          writing, so request the Trustee, or the Trustee shall deem it 
          desirable for its own protection in the performance of its duties 
          hereunder or under any Security Document, then the Company shall 
          appoint a Collateral Agent and the Company, and any Guarantor and, 
          if necessary, the Trustee shall execute and deliver all 
          instruments and agreements necessary or proper to constitute 
          another bank or trust company, or one or more Persons approved by 
          the Company to act as Collateral Agent, co-collateral trustee or 
          co-collateral trustees of all of or any of the Collateral under 
          this Indenture or under any of the Security Documents, jointly 
          with the Trustee originally named herein or therein or any 
          successor Trustee, or to act as separate collateral Trustee or 
          Collateral Agent of any of the Collateral or to act as co-trustee 
          hereunder. If the Company or Guarantor has not joined in the 
          execution of such instruments and agreements within 10 days after 
          it receives a written request from the Trustee to do so or if a 
          Default or Event of Default exists, the Trustee may act under the 
          foregoing provisions of this Section 7.12 (1) without the 
          concurrence of the Company or Guarantor and execute and deliver 
          such instruments and agreements on behalf of the Company or such 
          Guarantor. The Company and any Guarantor hereby appoints the 
          Trustee as its agent and attorney-in-fact in either of such 
          contingencies. The Company has appointed the initial Collateral 
          Agent and has agreed to compensate and indemnify such Collateral 
          Agent in accordance with Section 7.07.

     (2)  Every separate Collateral Agent and collateral trustee and every 
          co-collateral trustee, other than any successor Trustee appointed 
          pursuant to Section 7.08 of this Indenture, shall, to the extent 
          permitted by law, be appointed and act and be such, subject to the 
          following provisions and conditions:

          (a)  all rights, powers, duties and obligations conferred upon the 
               Trustee in respect of the custody, control and management of 
               moneys, papers, or securities shall be exercised solely


<PAGE>

                                    -37-


               by the Trustee or any Collateral Agent appointed in accordance
               with this Section 7.12;


          (b)  all rights, powers, duties and obligations conferred or imposed
               upon the Trustee hereunder and under the relevant Security
               Documents shall be conferred or imposed and exercised or
               performed by the Trustee and such Collateral Agent, separate
               collateral trustee or separate collateral trustees or 
               co-collateral trustee or co-collateral trustees, jointly, as 
               shall be provided in the instrument appointing such Collateral 
               Agent, separate collateral trustee or separate collateral
               trustees or co-collateral trustee or co-collateral trustees,
               except to the extent that under any law of any jurisdiction in
               which any particular act or acts are to be performed, the
               Trustee shall be incompetent or unqualified to perform such act
               or acts, or unless the performance of such act or acts would
               result in the imposition of any tax on the Trustee which would
               not be imposed absent such joint act or acts, in which event such
               rights, powers, duties and obligations shall be exercised and 
               performed by such Collateral Agent, separate collateral trustee 
               or co-collateral trustees;

          (c)  no power given hereby or by the relevant Security Documents 
               to, or which it is provided herein or therein may be exercised 
               by, any such Collateral Agent, co-collateral trustee or 
               co-collateral trustees or separate collateral trustee or 
               separate collateral trustees, shall be exercised hereunder or 
               thereunder by such Collateral Agent, co-collateral trustee or 
               co-collateral trustees except jointly with, or with the 
               consent in writing of, the Trustee, anything contained herein 
               to the contrary notwithstanding; 

          (d)  no collateral trustee (including, without limitation, the 
               Trustee) or Collateral Agent hereunder shall be personally 
               liable by reason of any act or omissions of any other 
               collateral trustee or Collateral Agent hereunder;

          (e)  the Trustee, at any time by an instrument in writing, may 
               accept the resignation of or remove any such Collateral Agent, 
               separate collateral trustee or co-collateral trustees or 
               co-trustee and, in that case by an instrument in writing, may 
               appoint a successor to such Collateral Agent, separate 
               collateral trustee or co-collateral trustees, as the case may 
               be, anything contained herein to the contrary notwithstanding. 
               If the Company or any Guarantor has not joined in the 
               execution of any such instrument within 10 days after it 
               receives a written request from the Trustee to do so, or if a 
               Default or Event of Default then exists, the Trustee shall 
               have the power to accept the resignation of 


<PAGE>

                                     -38-

               or remove any such Collateral Agent, separate collateral 
               trustee or co-collateral trustees and to appoint a successor 
               without the concurrence of the Company or any Guarantor. The 
               Company and any Guarantor hereby appoint the Trustee its agent 
               and attorney-in-fact to act for it in such connection in such 
               contingency. If the Trustee shall have appointed a Collateral 
               Agent, separate collateral trustee, collateral trustees or 
               co-collateral trustee or co-collateral trustees or co-trustee 
               as above provided, the Trustee may at any time, by an 
               instrument in writing, accept the resignation of or remove any 
               such Collateral Agent, separate collateral trustee, 
               co-collateral trustees or co-trustee and the successor to any 
               such Collateral Agent, separate collateral trustee, 
               co-collateral trustees or co-trustee shall be appointed by the 
               Trustee alone pursuant to this Subsection 7.12(e); and

          (f)  The Trustee shall have no duty to compensate or indemnify any 
               Collateral Agent, separate collateral trustee, co-collateral 
               trustee or co-trustee appointed hereunder. The Trustee shall 
               not be liable or responsible for any Collateral Agent 
               appointed by it with due care hereunder. 

     "SECTION 7.13 COSTS OF ENFORCEMENT

     Each of the Company and its Restricted Subsidiaries shall reimburse the 
     Trustee and the Collateral Agent or, if applicable the Holders, on 
     demand for all costs of realization (which for the purposes hereof shall 
     include any loans or advances made by the Trustee, Collateral Trustee or 
     a Holder to a Custodian) and other costs and expenses (including legal 
     fees and expenses) incurred by the Trustee and the Collateral Agent or, 
     if applicable the Holders or a Custodian in connection with the 
     realization, disposition of, retention, protection or collection of any 
     of the Collateral and the protection, preservation, or enforcement of 
     the rights, remedies and powers of the Trustee and the Collateral Agent 
     or, if applicable the Holders, or any Custodian. All amounts for which 
     the Company or any Restricted Subsidiary is required under this Section 
     7.13, Section 7.07 or otherwise under this Indenture to reimburse or pay 
     to the Trustee and the Collateral Agent or, if applicable the Holders or 
     any Custodian shall, from the date of disbursement until the date of 
     payment, be deemed to be an Obligation under this Indenture that is 
     secured under the Security Documents and shall bear interest at the 
     highest rate per annurn charged hereunder on any of the Obligations 
     under this Indenture. Nothing herein shall affect, impair or limit the 
     Trustee's and any Collateral Agent's rights under Section 6.10 or 
     Section 7.07.

28.  Section 9.01 of the Indenture is hereby amended by inserting a comma 
     after word "Indenture" wherever it appears therein and thereafter adding 
     the words "Security Documents, the Inter-Creditor Agreement".


<PAGE>

                                     -39-

29.  Section 9.02 of the Indenture is hereby amended by inserting a comma 
     after the word "Indenture" wherever it appears therein and, in each 
     case, thereafter adding the words "Security Documents, the 
     Inter-Creditor Agreement". 

30.  Article 11 of the Indenture is hereby amended by deleting in its 
     entirety section 11.04 thereof.

31.  Section 11.06 shall be amended

     (i)  by adding at the end of the first sentence of clause (a) thereof the
          following:

          "provided however that the Company or such other Guarantor, as 
          applicable, shall confirm (i) that it is and continues to be bound 
          by and shall covenant and agree to perform the obligations of the 
          Guarantor in respect of the Indenture and the Notes; (ii) that the 
          property, assets and undertaking so conveyed to the Company or such 
          other Guarantor, as applicable, are subject to the Noteholder Liens 
          or the Kemess Newco Liens, as applicable, which Liens remain in 
          full force and effect and secure the said Obligations of such other 
          Guarantor and the Company; and (iii) such other Guarantor or the 
          Company, as applicable, shall grant to the Trustee or the 
          Collateral Agent a Lien in all of its property, assets and 
          undertaking, including the assets transferred as aforesaid, which 
          Lien will be In Agreed Form and will secure the payment and 
          performance by such other Guarantor or the Company, of its 
          obligations in respect of the Indenture and the Notes."

     (ii) and by inserting after the word "property" and before the "," at 
          the end of subparagraph (b) (ii) the following:

          "and such corporation shall acknowledge and confirm that the 
          property, assets and undertaking of the Guarantor that it has 
          assumed are subject to the Noteholders Liens and the Kemess Newco 
          Liens, as applicable, which Liens are and continue to be 
          enforceable as security for the obligations of the Company under 
          the Indenture and the Notes and such successor corporation shall 
          grant to the Trustee or the Collateral Agent a Lien on all of its 
          property, assets and undertaking, which Lien will be In Agreed Form 
          and will secure the payment and performance by such successor 
          corporation of such assumed obligations."

32.  The Indenture is hereby amended by adding thereto Exhibits E through I in
     the forms annexed to this Fourth Supplemental Indenture.

33.  The Indenture is hereby amended and supplemented in every respect to the
     extent necessary to give effect to all sections of this Fourth Supplemental
     Indenture and conform the Indenture thereto. 


<PAGE>

                                    -40-


34.  The Fourth Supplemental Indenture is entered into, and the amendments and
     supplements contained herein are made, pursuant to the provisions of 
     Sections 9.02 and 9.05 of the Indenture with the written consent of the 
     Holders of a majority of the principal amount of Notes outstanding under 
     the Indenture. On or prior to the Fourth Supplemental Closing Date, the 
     Company shall deliver to the Trustee an Officer's Certificate and an 
     Opinion of Counsel pursuant to Section 7.02 of the Indenture, in each 
     case stating the matters required to be stated therein pursuant to 
     Sections 9.07, 13.04 and 13.05 of the Indenture and to the effect that 
     all conditions precedent to be performed by the Company provided for in 
     the Indenture relating to this Fourth Supplemental Indenture have been 
     complied with including, without limitation, the closing of each of the 
     transactions described in the definition of "Fourth Supplemental Closing 
     Date" and including such other matters as are requested by the Trustee; 
     whereupon this Fourth Supplemental Indenture, including as a part 
     thereof, the Inter-Creditor Agreement (with the exception of Section 3.5 
     which shall bind only the Holders of Notes that execute Consents with 
     respect thereto), shall be binding upon each Holder of Notes.

35.  The Company hereby represents and warrants that:

     (a)  The execution, delivery and performance by the Company of this 
          Fourth Supplemental Indenture, the Inter-Creditor Agreement and the 
          Security  Documents have been duly authorized by all necessary 
          corporate action on the part of the Company; and this Fourth 
          Supplemental Indenture, the Inter-Creditor Agreement and the 
          Security Documents have been duly executed and delivered by the 
          Company and constitute valid and binding obligations of the 
          Company, enforceable against the Company in accordance with their 
          terms, subject to bankruptcy, insolvency, fraudulent transfer, 
          reorganization, moratorium and similar laws of general 
          applicability now or hereafter in effect relating to or affecting 
          creditors' rights and to general equity principles. 

     (b)  The execution, delivery and performance by the Company of this 
          Fourth Supplemental Indenture, the Inter-Creditor Agreement and the 
          Security Documents do not and will not (i) conflict with or result 
          in a breach of the terms, conditions or provisions of, (ii) 
          constitute a default under, (iii) give any Person the right to 
          accelerate any obligation under, or (iv) result in a violation of, 
          (x) the constituent documents of the Company, (y) any law, statute, 
          rule, regulation, instrument, order, judgment or decree to which 
          the Company is subject, including without limitation, any federal 
          or state securities laws or comparable laws of any Governmental 
          Body or (z) any agreement, note, mortgage, indenture, arrangement 
          or other obligation to which the Company is a party or by which it 
          is bound. 

     (c)  On or prior to the Fourth Supplemental Closing Date, the Company 
          shall deliver to the Trustee, for the benefit of the Holders of the 
          Notes, an Opinion of Counsel, stating the matters required to be 
          stated in an Opinion of Counsel pursuant to Section 13.05 of the 
          Indenture together with all such other matters as the Trustee and 
          the Proposing Noteholders (as defined in the Letter Agreement) may 
          reasonably require in connection with the execution and delivery of 
          the Fourth Supplemental Indenture, the Inter-Creditor Agreement and 
          the Security Documents and in paragraph 


<PAGE>

                                    -41-


          one of the Letter Agreement and to the effect set forth in 
          paragraph 34 hereof and Section 4A.11 of the Indenture and in 
          subsections (a) and (b) above (and in giving such opinion, Counsel 
          may rely on an Officer's Certificate as to the matters set forth in 
          clause (z) of subsection (b) above) and to the effect that the 
          Indenture, this Fourth Supplemental Indenture and the 
          Inter-Creditor Agreement comply with the TIA (as defined in the 
          Indenture) as in effect on the date thereof.

     (d)  The Company is not, and will not as a result of entering into the 
          Inter-Creditor Agreement, the Royalty Debenture, the Senior Secured 
          Debentures, any inter-creditor agreement in respect of Existing 
          Hedge Indebtedness and the Permitted Liens described in clause 
          (vii)(a) of the definition of Permitted Liens, be in default of its 
          covenants under Section 4.14 of the Indenture. 

36.  For purposes of this Fourth Supplemental Indenture, the Company hereby 
     affirms its duty to indemnify and hold the Trustee harmless pursuant to 
     Section 7.07 of the Indenture. Nothing herein shall be read or 
     interpreted to limit or otherwise adversely affect the Trustee's or the 
     Collateral Agent's rights, protections and immunities under the 
     Indenture, as amended and supplemented from time to time. In furtherance 
     and not in limitation of any provision of this Indenture, the Trustee, 
     the Collateral Agent, their agents, employees, stockholders, directors, 
     officers and attorneys make no representations or warranties and shall 
     not be responsible for any recital, statement, representation or 
     warranty, which shall in all cases be taken as the recitals, statements, 
     representations and warranties of the Company, in this Fourth 
     Supplemental Indenture, in any Note (other than the Trustee's 
     authentication thereof), any solicitation or consents by the Company of 
     Holders to this Fourth Supplemental Indenture, the Inter-Creditor 
     Agreement (except as otherwise expressly provided in the Inter-Creditor 
     Agreement) or the Security Documents, or for any disclosure materials 
     provided to any Person in connection therewith or in connection with the 
     incurrence of any Indebtedness or for the compliance by the Company 
     with any of the provisions of the Indenture, including without 
     limitation, Section 4.07 of the Indenture, or with any federal or state 
     securities laws or any comparable laws of any Governing Body, or for the 
     validity, sufficiency, effectiveness, adequacy or priority, as 
     applicable, of this Fourth Supplemental Indenture, the Inter-Creditor 
     Agreement (except, as otherwise expressly provided in Section 8.1 of the 
     Inter-Creditor Agreement) or the Security Documents and the security 
     granted or purported to be granted thereunder or any other instrument 
     involved in this transaction, or for the validity of the execution by 
     the Company of any such documents, instruments or agreements. The 
     Company hereby affirms its duty to indemnify and hold the Trustee, the 
     Collateral Agent, their agents, employees, stockholders, directors and 
     officers harmless pursuant to Section 7.07 of the indenture, as amended 
     and supplemented in paragraph 26 hereof.

37.  The Holders, by their Consents to this Fourth Supplemental Indenture, the 
     Inter-Creditor Agreement and the Security Documents, hereby instruct the 
     Trustee to waive any and all existing Defaults and Events of Default, 
     known or unknown to the Trustee, under the Indenture and authorize the 
     Trustee to exercise the standard of care in entering into this Fourth 
     Supplemental Indenture as described in Section 7.01 (b) (but not 7.01 
     (a)) of the indenture. The Holders further hereby acknowledge and 
     confirm that the Trustee has made no statements, representations or 
     warranties to any Holder in connection with the 


<PAGE>

                                    -42-


     solicitation of such Holders' Consents, that the Trustee has relied 
     hereunder upon the authorization and directions of the Holders contained 
     herein and in their Consents and upon Officer's Certificates and 
     Opinions of Counsel delivered to the Trustee, that the Proposing 
     Noteholders have entered into the Letter Agreement directly with the 
     Company, that the Holders who have consented have had the opportunity to 
     request such information from the Company and other sources as they have 
     considered material to such consent and have been, or have had the 
     opportunity to have been, represented by counsel and/or financial 
     advisors in negotiating the terms of this Fourth Supplemental Indenture, 
     the Inter-Creditor Agreement and the Security Documents, and that it is 
     not the intention of such Holders that the Trustee or Collateral Agent 
     shall incur financial or other risk or liability as a result of entering 
     into this Fourth Supplemental Indenture, the Inter-Creditor Agreement or 
     the Security Documents at the request and direction of such Holders. In 
     furtherance and not in limitation hereof, the terms of Article Seven of 
     the Indenture, as amended hereby, are hereby affirmed with respect to the 
     Indenture, the Inter-Creditor Agreement and the Security Documents. The 
     Trustee and the Collateral Agent shall have no duty or responsibility to 
     any Person under the Letter Agreement or under the Consents.

     IN WITNESS WHEREOF, the parties hereto have caused this Fourth Supplemental
Indenture to be duly executed and effective, all as of the date first written
above.

                                       ROYAL OAK MINES INC.


                                       By: /S/ James H. Wood
                                          -------------------------------------
                                             Name:   JAMES H. WOOD
                                             Title:  C.F.O.

                                       CHASE MANHATTAN TRUST COMPANY,
                                       NATIONAL ASSOCIATION, as Trustee


                                       By: /S/ Cheryl McDonald
                                          -------------------------------------
                                             Name:   CHERYL MCDONALD
                                             Title:  AUTHORIZED SIGNATORY




<PAGE>

                             FIFTH SUPPLEMENTAL INDENTURE


     FIFTH SUPPLEMENTAL INDENTURE, dated and effective as of June 22, 1998, by
and between Royal Oak Mines Inc., a corporation amalgamated under the laws of
Ontario, Canada (the "Company"), and Chase Manhattan Trust Company, National
Association, the successor to Mellon Bank, F.S.B., as Trustee (the "Trustee").

RECITALS OF ROYAL OAK MINES INC.

     Royal Oak Mines Inc. issued an aggregate principal amount of $175 million
of 11% Senior Subordinated Notes due 2006 and Series B 11% Senior Subordinated
Notes due 2006 (collectively, the "Notes") pursuant to an Indenture, dated as of
August 12, 1996 (as amended and supplemented by the First Supplemental Indenture
dated and effective as of December 31, 1997, the Second Supplemental Indenture
dated and effective as of January 31, 1998, the Third Supplemental Indenture
dated and effective as of May 19, 1998 and the Fourth Supplemental Indenture
dated and effective as of the date hereof (as so amended and supplemented, the
"Indenture"), by and among Royal Oak Mines Inc., the Trustee and Kemess Mines
Inc. ("Kemess").  Kemess was a Guarantor as defined in and for the purposes of
the Indenture.  On December 29, 1997, Royal Oak Mines Inc. and Kemess
amalgamated under the laws of Ontario, Canada and the surviving entity of such
amalgamation is the Company.  Unless otherwise defined herein, terms with
initial capitals shall have the meanings ascribed thereto in the Indenture.

     Section 9.02 of the Indenture provides that the Indenture may be amended or
supplemented by the Company and the Trustee, when authorized by a resolution of
the board of directors of the Company and consented to in writing by the Holders
of at least a majority in aggregate principal amount of the outstanding Notes.
The Holders of a majority in aggregate principal amount of the outstanding Notes
have provided their written consent to the amendments and supplements to the
Indenture contained in this Fifth Supplemental Indenture, and the other
conditions precedent in the Indenture to the execution hereof have been
satisfied.  Pursuant to Sections 9.02 and 9.05 of the Indenture, upon the
effective date (determined in accordance with the Indenture), which effective
date is June 22, 1998, of the amendments and supplements to the Indenture and
the agreements contained in this Fifth Supplemental Indenture, such amendments
and supplements and agreements will bind only each Holder of a Note who has
consented to this Fifth Supplemental Indenture and every subsequent Holder of a
Note or a portion of a Note that evidences the same debt as the consenting
Holder's Note.

AGREEMENT

     Each party hereto agrees as follows for the benefit of the other party and
for the equal and ratable benefit of each Holder of a Note who has consented to
the amendments and supplements to the Indenture and the agreements contained in
this Fifth Supplemental Indenture and every subsequent Holder of a Note or
portion of a Note that evidences the same debt as the consenting Holder's Note:

<PAGE>

                                      -2-

1.   Section 1.01 of the Indenture is hereby amended by inserting in
     alphabetical order in Section 1.01 the following definition:

          "Consenting Holder of Notes" means a Holder of a Note, including for
          purposes of the Fifth Supplemental Indenture, each holder of a
          beneficial interest therein, who has given a Consent to the amendments
          and supplements to the Indenture and the agreements contained in the
          Fifth Supplemental Indenture and every subsequent Holder of a Note or
          a portion of a Note, including the holders of beneficial interests
          therein, that evidences the same debt as such consenting Holder's
          Note, and "Consenting Holders of  Notes" means each and every
          Consenting Holder of Notes collectively.

2.   The last sentence of Section 10.11 of the Indenture is hereby deleted and
     replaced by the following:

          Nothing herein contained shall be deemed to authorize the Trustee or
          the holders of Senior Indebtedness or their Representative to
          authorize or consent to or accept or adopt on behalf of any holder any
          plan of reorganization, arrangement, adjustment or composition
          affecting the Notes or the rights of any Holder thereof.  Nothing
          herein contained shall be deemed to authorize the Trustee or the
          holders of Senior Indebtedness or their Representative to vote in
          respect of the claim of any Holder in any such proceeding except as
          hereinafter provided:

                    (a)  As long as any Obligations of the Company under the
          Senior Secured Debentures are outstanding, in the event of any
          proceedings under any Bankruptcy Law or any other applicable law
          relating to bankruptcy, insolvency, receivership or reorganization or
          relief of debtors including without limitation any such proceedings
          under the COMPANIES' CREDITORS ARRANGEMENT ACT (Canada), the
          BANKRUPTCY AND INSOLVENCY ACT (Canada) or any other applicable
          bankruptcy or insolvency legislation (a "Restructuring Proceeding"),
          each Consenting Holder of Notes will do all things and take all steps
          reasonably within its control or power to cause the Holders of Notes
          to be placed in a different class of creditors than the Senior
          Debentureholders in a Restructuring Proceeding where the members of
          such class are entitled to vote in connection with such Restructuring
          Proceeding ("a "Creditor Class").  None of the Trustee, the Collateral
          Agent or any Consenting Holder of Notes will take any steps or bring
          or participate in any proceedings whereby they assert that the Holders
          of Notes should be placed in the same Creditor Class as the Senior
          Debentureholders and, if notwithstanding the foregoing, a proposal or
          other plan of compromise, arrangement or reorganization (a "Proposed
          Plan") is submitted for acceptance or rejection to the creditors of
          the Company, and the Proposed Plan places  the claims of the Holders
          of Notes in the same Creditor Class as the Senior Debentureholders, or
          if a court determines that the Holders of Notes are to be placed in
          the same Creditor Class as the Senior Debentureholders, then in each

<PAGE>

                                      -3-

          such case each Consenting Holder of Notes shall and hereby allows the
          Senior Debentureholders to vote, and hereby assigns to and in favor of
          the Senior Debentureholders for the purpose of permitting the Senior
          Debentureholders to vote against and defeat any such Proposed Plan
          made to any Creditor Class of the Company of which the Senior
          Debentureholders and the Holders of the Notes are members, that
          portion of the Company's Obligations under this Indenture and the
          Notes and corresponding votes in respect thereof to which the
          Consenting Holders of Notes are otherwise entitled in such
          Restructuring Proceedings equal to the lesser of (i) all of the
          Company's Obligations under this Indenture and the Notes held by the
          Consenting Holders of Notes and the corresponding votes in respect
          thereof; and (ii) that amount of the Company's Obligations under this
          Indenture and the Notes held by the Consenting Holders of Notes and
          the corresponding votes in respect thereof which, when aggregated with
          the votes to which the Senior Debentureholders are entitled, will
          permit the Senior Debentureholders to vote against and defeat such
          Proposed Plan in such Restructuring Proceedings.
          
                    (b)  Each of the Consenting Holders of Notes hereby appoints
          each director or officer for the time being of a Senior
          Debentureholder as attorney-in-fact to do all such acts and things,
          including to execute and deliver for and in the name of the Consenting
          Holders of Notes, all documents and instruments, to give effect to the
          grant of the right to vote and the assignment of the Company's
          Obligations under this Indenture and the Notes and the corresponding
          votes in respect thereof by or on behalf of the Consenting Holders of
          Notes to the Senior Debentureholders provided for in Section 10.11(a)
          above, with full power of substitution in the premises, and the
          Consenting Holders of Notes agree to ratify and confirm all acts of
          the said attorney lawfully done in the premises pursuant to the powers
          of attorney granted pursuant hereto.  The powers of attorney granted
          hereby are powers coupled with an interest, and shall continue
          notwithstanding the insolvency, bankruptcy, dissolution or liquidation
          of any Consenting Holder of Notes, or other event by which any such
          party granting such power of attorney ceases to exist or to have
          capacity.
     
                    (c)  It is acknowledged and agreed that (i) the assignment
          provided for in Section 10.11(a) above is for voting purposes only in
          the context of a Restructuring Proceeding and (except as provided in
          Section 10.11(c)(v)) the assignment shall not otherwise affect any
          rights and entitlements of the Consenting Holders of Notes, (ii) any
          voting rights so assigned shall be deemed to be assigned back to the
          Consenting Holders of Notes immediately upon the termination of the
          circumstances (which includes for greater certainty following the
          final determination of any appeal therefrom) in which the Senior
          Debentureholders require such votes to vote against and defeat a
          Proposed Plan in a Restructuring Proceeding, (iii) the voting rights
          so assigned to the Senior Debentureholders shall only be exercised to
          allow the Senior Debentureholders to vote against and defeat a
          Proposed Plan in a Restructuring Proceeding, (iv) the assignment of
          voting rights of the Consenting Holders of Notes to the Senior

<PAGE>

                                      -4-

          Debentureholders provided for herein shall not affect the entitlement
          of such Consenting Holders of Notes to receive any and all
          consideration payable or paid or distributions made on the Notes as
          calculated without regard to such assignment, (v) other than the loss
          of the right of the Consenting Holders of Notes, if any, to cause a
          Proposed Plan to be approved by the members of a Creditor Class of
          which the Consenting Holders of Notes and the Senior Debentureholders
          are, or but for this Section 10.11 would be, members, nothing in this
          Section 10.11 shall prejudice any other right or entitlement of the
          Consenting Holders of Notes in their capacity as creditors of the
          Company to the treatment to which they would otherwise be entitled in
          a Restructuring Proceedings, and (vi) the provisions of this Section
          10.11 shall not apply to the Holders of Notes who are not Consenting
          Holders of Notes.
     
                    (d)  Notwithstanding anything to the contrary contained
          herein, the rights under the Indenture of Holders who have not
          consented to the Fifth Supplemental Indenture shall remain unaffected
          hereby.

3.   Section 6.09 of the Indenture is hereby amended by inserting, in the last
     sentence thereof, after the words "or the rights of any Holder thereof, or"
     the words ", except as described in Sections 10.11 and 12.11,".

4.   The last sentence of Section 12.11 of the Indenture is hereby deleted and
     replaced by the following:

          Nothing herein contained shall be deemed to authorize the Trustee or
          the holders of Guarantor Senior Indebtedness or their Representative
          to authorize or consent to or accept or adopt on behalf of any holder
          any plan of reorganization, arrangement, adjustment or composition
          affecting the Notes or the rights of any Holder thereof.  Nothing
          herein contained shall be deemed to authorize the Trustee or the
          holders of Guarantor Senior Indebtedness or their Representative to
          vote in respect of the claim of any Holder in any such proceeding
          except as hereinafter provided:

                    (a)  As long as any Obligations of the Guarantor under the
          Senior Secured Debentures are outstanding, in the event of any
          proceedings under any Bankruptcy Law or any other applicable law
          relating to bankruptcy, insolvency, receivership or reorganization or
          relief of debtors including without limitation any such proceedings
          under the COMPANIES' CREDITORS ARRANGEMENT ACT (Canada), the
          BANKRUPTCY AND INSOLVENCY ACT (Canada) or any other applicable
          bankruptcy or insolvency legislation (a "Restructuring Proceeding"),
          each Consenting Holder of Notes will do all things and take all steps
          reasonably within its control or power to cause the Holders of Notes
          to be placed in a different class of creditors than the Senior
          Debentureholders in a Restructuring Proceeding where the members of
          such class are entitled to vote in connection with such Restructuring
          Proceeding ("a "Creditor Class").  None of the Trustee, the 

<PAGE>

                                      -5-

          Collateral Agent or any Consenting Holder of Notes will take any steps
          or bring or participate in any proceedings whereby they assert that 
          the Holders of Notes should be placed in the same Creditor Class as 
          the Senior Debentureholders and, if notwithstanding the foregoing, a 
          proposal or other plan of compromise, arrangement or reorganization (a
          "Proposed Plan") is submitted for acceptance or rejection to the 
          creditors of the Guarantor, and the Proposed Plan places  the claims
          of the Holders of Notes in the same Creditor Class as the Senior 
          Debentureholders, or if a court determines that the Holders of Notes 
          are to be placed in the same Creditor Class as the Senior 
          Debentureholders, then in each such case each Consenting Holder of 
          Notes shall and hereby allows the Senior Debentureholders to vote, and
          hereby assigns to and in favor of the Senior Debentureholders for the 
          purpose of permitting the Senior Debentureholders to vote against and 
          defeat any such Proposed Plan made to any Creditor Class of the 
          Guarantor of which the Senior Debentureholders and the Holders of the 
          Notes are members, that portion of the Guarantor's Obligations under 
          its Guarantee of this Indenture and the Notes and corresponding votes 
          in respect thereof to which the Consenting Holders of Notes are 
          otherwise entitled in such Restructuring Proceedings equal to the 
          lesser of (i) all of the Guarantor's Obligations under its Guarantee 
          of this Indenture and the Notes held by the Consenting Holders of 
          Notes and the corresponding votes in respect thereof; and (ii) that 
          amount of the Guarantor's Obligations under its Guarantee of this 
          Indenture and the Notes held by the Consenting Holders of Notes and 
          the corresponding votes in respect thereof which, when aggregated with
          the votes to which the Senior Debentureholders are entitled, will 
          permit the Senior Debentureholders to vote against and defeat such 
          Proposed Plan in such Restructuring Proceedings.
                         
                    (b)  Each of the Consenting Holders of Notes hereby appoints
          each director or officer for the time being of a Senior
          Debentureholder as attorney-in-fact to do all such acts and things,
          including to execute and deliver for and in the name of the Consenting
          Holders of Notes, all documents and instruments, to give effect to the
          grant of the right to vote and the assignment of the Guarantor's
          Obligations under its Guarantee of this Indenture and the Notes and
          the corresponding votes in respect thereof by or on behalf of the
          Consenting Holders of Notes to the Senior Debentureholders provided
          for in Section 12.11(a) above, with full power of substitution in the
          premises, and the Consenting Holders of Notes agree to ratify and
          confirm all acts of the said attorney lawfully done in the premises
          pursuant to the powers of attorney granted pursuant hereto.  The
          powers of attorney granted hereby are powers coupled with an interest,
          and shall continue notwithstanding the insolvency, bankruptcy,
          dissolution or liquidation of any Consenting Holder of Notes, or other
          event by which any such party granting such power of attorney ceases
          to exist or to have capacity.
     
                    (c)  It is acknowledged and agreed that (i) the assignment
          provided for in Section 12.11(a) above is for voting purposes only in
          the context of a Restructuring Proceeding and (except as provided in
          Section 12.11(c)(v)) the 

<PAGE>

                                      -6-

          assignment shall not otherwise affect any rights and entitlements 
          of the Consenting Holders of Notes, (ii) any voting rights so assigned
          shall be deemed to be assigned back to the Consenting Holders of Notes
          immediately upon the termination of the circumstances (which includes
          for greater certainty following the final determination of any appeal
          therefrom) in which the Senior Debentureholders require such votes to 
          vote against and defeat a Proposed Plan in a Restructuring Proceeding,
          (iii) the voting rights so assigned to the Senior Debentureholders 
          shall only be exercised to allow the Senior Debentureholders to vote 
          against and defeat a Proposed Plan in a Restructuring Proceeding, (iv)
          the assignment of voting rights of the Consenting Holders of Notes to 
          the Senior Debentureholders provided for herein shall not affect the 
          entitlement of such Consenting Holders of Notes to receive any and all
          consideration payable or paid or distributions made on the Notes as 
          calculated without regard to such assignment, (v) other than the loss
          of the right of the Consenting Holders of Notes, if any, to cause a 
          Proposed Plan to be approved by the members of a Creditor Class of 
          which the Consenting Holders of Notes and the Senior Debentureholders
          are, or but for this Section 12.11 would be, members, nothing in this
          Section 12.11 shall prejudice any other right or entitlement of the
          Consenting Holders of Notes in their capacity as creditors of the 
          Guarantor to the treatment to which they would otherwise be entitled 
          in a Restructuring Proceedings, and (vi) the provisions of this 
          Section 12.11 shall not apply to the Holders of Notes who are not 
          Consenting Holders of Notes.
               
                    (d)  Notwithstanding anything to the contrary contained
          herein, the rights under the Indenture of Holders who have not
          consented to the Fifth Supplemental Indenture shall remain unaffected
          hereby.

5.   Each Consenting Holder of Notes authorizes, directs and ratifies the
     inclusion of the provisions of paragraphs 2 and 4 hereof, or words of like
     effect and substance, into the Inter-Creditor Agreement and agrees to be
     subject to and bound by all of the provisions of the Inter-Creditor
     Agreement as if an original signatory thereto.

     By its execution and delivery of the Consents to the Trustee, each
     Consenting Holder of Notes agrees with the Senior Debentureholders that the
     provisions of this Fifth Supplemental Indenture constitute legal, valid and
     binding obligations of the Consenting Holder of Notes in favour of the
     Senior Debentureholders which are enforceable by the Senior
     Debentureholders against each Consenting Holder of Notes in accordance with
     their terms.  The Senior Debentureholders may rely upon the statements,
     acknowledgements, covenants and agreements of each Consenting Holder of
     Notes made or given pursuant to this Fifth Supplemental Indenture and may
     pursue and enforce any and all remedies resulting from any non-compliance
     therewith or breach thereof notwithstanding that the Senior
     Debentureholders are not signatories to this Fifth Supplemental Indenture.
     The Consenting Holders of Notes, by their consents to this Fifth
     Supplemental Indenture, hereby acknowledge and confirm for the benefit of
     the Senior Debentureholders the provisions of Section 3.5(A) of the 
     Inter-Creditor Agreement.  The 

<PAGE>
                                   -7-

     provisions of this Fifth Supplemental Indenture shall be binding on a 
     Person only for so long as such Person is a Holder or Beneficial 
     Holder of the Notes and once the Note or part of the Note is 
     transferred to a subsequent Holder or Beneficial Holder, such prior 
     Holder or Beneficial Holder shall no longer be liable other than for 
     its non-compliance with or breach of the provisions of the Fifth 
     Supplemental Indenture committed while it was a Holder or Beneficial 
     Holder thereof. Notwithstanding anything to the contrary contained 
     herein, the Trustee shall have no duty to the Senior Debentureholders 
     or their successors and assigns to enforce or perform any obligations 
     of the Consenting Holders of Notes under the provisions of this Fifth 
     Supplemental Indenture or under Section 3.5 of the Inter-Creditor 
     Agreement.

6.   The Indenture is hereby amended in every respect to the extent necessary to
     give effect to all sections of this Fifth Supplemental Indenture and
     conform the Indenture thereto.

7.   The Fifth Supplemental Indenture is entered into, and the amendments and
     supplements contained herein are made, pursuant to the provisions of
     Section 9.02 and 9.05 of the Indenture with the written consent of the
     Holders of a majority of the principal amount of Notes outstanding under
     the Indenture.  On or prior to the Fourth Supplemental Closing Date (as
     defined in the Indenture) the Company shall deliver to the Trustee an
     Officer's Certificate and an Opinion of Counsel pursuant to Section 7.02 of
     the Indenture, in each case stating the matters required to be stated
     therein pursuant to Sections 9.07, 13.04 and 13.05 of the Indenture and to
     the effect that all conditions precedent to be performed by the Company
     provided for in the Indenture relating to this Fifth Supplemental Indenture
     have been complied with including, without limitation, the closing of each
     of the transactions described in the definition of "Fourth Supplemental
     Closing Date" in the Indenture and including such other matters as the
     Trustee may reasonably require; whereupon, pursuant to Section 9.02 and
     9.05 of the Indenture, this Fifth Supplemental shall be binding only upon
     each Holder of a Note who has consented to the amendments and supplements
     to the Indenture and the agreements contained in this Fifth Supplemental
     Indenture and every subsequent Holder of a Note or a portion of a Note that
     evidences the same debt as the consenting Holder's Note.

8.   The Company hereby represents and warrants that:

     (a)  The execution, delivery and performance by the Company of this Fifth
          Supplemental Indenture have been duly authorized by all necessary
          corporate action on the part of the Company; and this Fifth
          Supplemental Indenture has been duly executed and delivered by the
          Company and constitutes a valid and binding obligation of the Company,
          enforceable against the Company in accordance with its terms, subject
          to bankruptcy, insolvency, fraudulent transfer, reorganization,
          moratorium and similar laws of general applicability now or
          hereinafter in effect relating to or affecting creditors' rights and
          to general equity principles.

<PAGE>
                                   -8-

     (b)  The execution, delivery and performance by the Company of this Fifth
          Supplemental Indenture does not and will not (i) conflict with or
          result in a breach of the terms, conditions or provisions of, (ii)
          constitute a default under, (iii) give any Person the right to
          accelerate any obligation under, or (iv) result in a violation of, (x)
          the constituent documents of the Company, (y) any law, statute, rule,
          regulation, instrument, order, judgment or decree to which the Company
          is subject, including without limitation, any federal or state
          securities laws or comparable laws of any Governmental Body or (z) any
          agreement, note, mortgage, indenture, arrangement or other obligation
          to which the Company is a party or by which it is bound.

     (c)  On or prior to the Fourth Supplemental Closing Date, the Company shall
          deliver to the Trustee, for the benefit of the Holders of the Notes,
          an Opinion of Counsel, stating the matters required to be stated in an
          Opinion of Counsel pursuant to Section 13.05 of the Indenture and to
          the effect set forth in subsections (a) and (b) above (and in giving
          such opinion, Counsel may rely on an Officer's Certificate as to the
          matters set forth in clause (z) of subsection (b) above) and to the
          effect that the Indenture and this Fifth Supplemental Indenture
          (including provisions hereof included in the Inter-Creditor Agreement)
          comply with the TIA (as defined in the Indenture) as in effect on the
          date hereof.

9.   For the purposes of this Fifth Supplemental Indenture, the Company hereby
     affirms its duty to indemnify and hold the Trustee harmless pursuant to
     Section 7.07 of the Indenture.  Nothing herein shall be read or interpreted
     to limit or otherwise adversely affect the Trustee's rights, protections
     and immunities under the Indenture, as amended and supplemented from time
     to time.  In furtherance and not in limitation of any provision of this
     Indenture, the Trustee, the Collateral Agent, their agents, employees,
     stockholders, directors, officers and attorneys make no representations or
     warranties and shall not be responsible for any recital, statement,
     representation or warranty (which shall in all cases be taken as recitals,
     statements, representations and warranties of the Company or the Consenting
     Holders of Notes, as applicable), in this Fifth Supplemental Indenture or
     the Inter-Creditor Agreement (except as otherwise expressly provided in the
     Inter-Creditor Agreement), any solicitation of consents by the Company of
     Holders to this Fifth Supplemental Indenture or the Inter-Creditor
     Agreement, or for any disclosure materials provided to any Person in
     connection therewith or in connection with the incurrence of any
     Indebtedness or for the compliance by the Company with any of the
     provisions of the Indenture, including without limitation, section 4.07 of
     the Indenture, or with any federal or state securities laws or any
     comparable laws of any Governmental Body, or for the validity, sufficiency,
     effectiveness, adequacy or priority, as applicable, of this Fifth
     Supplemental Indenture, the Inter-Creditor Agreement (except as otherwise
     expressly provided in Section 8.1 of the Inter-Creditor Agreement) and the
     security granted or purported to be granted thereunder or any other
     instrument involved in this transaction, or for the validity of the
     execution by the Company of any such documents, instruments or agreements. 
     The Company hereby affirms its duty to indemnity and hold 

<PAGE>
                                   -9-

     the Trustee, the Collateral Agent and their agents, employees, 
     stockholders, directors and officers harmless pursuant to Section 7.07 
     of the Indenture.

10.  The Holders, by their consents to this Fifth Supplemental Indenture, hereby
     authorize the Trustee to exercise the standard of care in entering into
     this Fifth Supplemental Indenture as described in Section 7.01(b) (but not
     7.01(a)) of the Indenture and hereby acknowledge and confirm that the
     Trustee has made no statements, representations or warranties to any Holder
     in connection with the solicitation of such Holder's consent, that the
     Trustee has relied hereunder upon the authorization and directions of the
     Holders contained herein and in their consents and upon Officer's
     Certificates and Opinions of Counsel delivered to the Trustee, that the
     Holders who have consented have had the opportunity to request such
     information from the Company and other sources as they have considered
     material to such consent and have been, or have had the opportunity to have
     been, represented by counsel and/or financial advisors in negotiating the
     terms of this Fifth Supplemental Indenture and the Inter-Creditor
     Agreement, and that it is not the intention of such Holders that the
     Trustee shall incur financial or other risk or liability as a result of
     entering into this Fifth Supplemental Indenture or the Inter-Creditor
     Agreement at the request and direction of the Holders. In furtherance and
     not in limitation hereof, the terms of Article Seven of the Indenture are
     hereby affirmed with respect to the Indenture and the Inter-Creditor
     Agreement.  The Trustee shall have no duty or responsibility to any Persons
     under the Consents given by any Holder in respect of this Fifth
     Supplemental Indenture.

   IN WITNESS WHEREOF, the parties hereto have caused this Fifth Supplemental
Indenture to be duly executed and effective all as of the date first written
above.


                                             ROYAL OAK MINES INC.

                                             By: /s/ James H. Wood
                                                ----------------------------
                                                Name: James H. Wood
                                                Title: C.F.O.
                                             

                                             CHASE MANHATTAN TRUST COMPANY,
                                             NATIONAL ASSOCIATION, AS TRUSTEE
     
                                             
                                             By: /s/ Cheryl McDonald
                                                ----------------------------
                                                Name:  Cheryl McDonald
                                                Title:  Authorized Signatory



<PAGE>









                            SECURITIES PURCHASE AGREEMENT


                                       BETWEEN:


                                ROYAL OAK MINES INC.,

                                       - and -

                                        AGENT





                           made the 17th day of April, 1998



<PAGE>


                          T A B L E   O F   C O N T E N T S

<TABLE>
<S>                                                                               <C>
1 - DEFINITIONS AND INTERPRETATION . . . . . . . . . . . . . . . . . . . . . . .  2
     1.1  Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2
     1.2  Monetary References. . . . . . . . . . . . . . . . . . . . . . . . . .  9
     1.3  Governing Law. . . . . . . . . . . . . . . . . . . . . . . . . . . . .  9
     1.4  Use of Singular and Plural . . . . . . . . . . . . . . . . . . . . . .  9
     1.5  Invalidity of Provisions . . . . . . . . . . . . . . . . . . . . . . .  9
     1.6  References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
     1.7  Generally Accepted Accounting Principles . . . . . . . . . . . . . . . 10
     1.8  Interpretation Not Affected by Headings. . . . . . . . . . . . . . . . 10
     1.9  Computation of Time Periods. . . . . . . . . . . . . . . . . . . . . . 10
     1.10 Day Not A Business Day . . . . . . . . . . . . . . . . . . . . . . . . 10

2 - TRANSACTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
     2.1  Issuance of Debentures to the Lenders. . . . . . . . . . . . . . . . . 11
     2.2  Purchase Price . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
     2.3  Fees and Expenses. . . . . . . . . . . . . . . . . . . . . . . . . . . 12
     2.4  Use of Proceeds. . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3 - REPRESENTATIONS AND WARRANTIES . . . . . . . . . . . . . . . . . . . . . . . 13
     3.1  Representations and Warranties by the Corporation. . . . . . . . . . . 13
     3.2  Survival Representations and Warranties by the Corporation . . . . . . 26

4 - CONDITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
     4.1  Conditions to the Obligations of the Agent re: the Initial
          Purchase Price . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
     4.2  Conditions to the Obligations of the Agent re: Additional
          Purchase Price Payments. . . . . . . . . . . . . . . . . . . . . . . . 31
     4.3  Waiver or Termination by the Agent . . . . . . . . . . . . . . . . . . 33

5 - CLOSING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
     5.1  Closing Arrangements . . . . . . . . . . . . . . . . . . . . . . . . . 33
     5.2  Documents to be Delivered. . . . . . . . . . . . . . . . . . . . . . . 33

6 - GENERAL PROVISIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
     6.1  Further Assurances . . . . . . . . . . . . . . . . . . . . . . . . . . 34
     6.2  Remedies Cumulative. . . . . . . . . . . . . . . . . . . . . . . . . . 34
     6.3  Indemnification. . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

     <S>                                                                         <C>
     6.4  Notices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
     6.5  Counterparts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
     6.6  Announcements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
     6.7  Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
     6.9  Successors and Assigns . . . . . . . . . . . . . . . . . . . . . . . . 38
     6.10 Reliance and Non-Merger. . . . . . . . . . . . . . . . . . . . . . . . 38
     6.11 Judgment Currency. . . . . . . . . . . . . . . . . . . . . . . . . . . 38
     6.12 Time of the Essence. . . . . . . . . . . . . . . . . . . . . . . . . . 39
     6.13 Entire Agreement . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
     6.14 Waiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
     6.15 Amendments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

</TABLE>

<PAGE>

                            SECURITIES PURCHASE AGREEMENT

       THIS AGREEMENT is made the 17th day of April, 1998


BETWEEN:


               ROYAL OAK MINES INC., a corporation 
               amalgamated under the laws of the Province 
               of Ontario

               (the "Corporation")

               - and -


               AGENT, as defined herein



       WHEREAS the Corporation carries on business, inter alia, as an owner and
operator of the Kemess South Mine (as hereinafter defined);


       AND WHEREAS the Agent has agreed to cause the Lenders (as hereinafter
defined) to subscribe for and purchase from the Corporation, and the Corporation
has agreed to issue to the Lenders, senior secured debentures of the Corporation
in the aggregate principal amount of One Hundred and Twenty Million United
States Dollars (U.S.$120,000,000) upon and subject to the terms and conditions
hereinafter set out;


       AND WHEREAS the indebtedness of the Corporation to the Lenders under the
Debentures (as hereinafter defined) is being incurred by the Corporation in
connection with the construction, development and operation of the Kemess South
Mine;


       NOW THEREFORE THIS AGREEMENT WITNESSES that in consideration of the
mutual covenants hereinafter contained, the parties hereto agree as follows:

<PAGE>

ARTICLE 1 - DEFINITIONS AND INTERPRETATION

1.1    DEFINITIONS

       In this Agreement, unless the subject matter or context is inconsistent
therewith, the following terms and expressions will have the following meanings:

       (a)     "Additional Purchase Price Payment" and "Additional Purchase
       Price" have the meanings given to such terms, respectively, in Section
       2.2(b) hereof;

       (b)     "Agent" means Trilon Financial Corporation;

       (c)     "Aggregate Additional Purchase Price" means U.S.$30,000,000;

       (d)     "Agreement" means this Securities Purchase Agreement made the
       17th day of April, 1998 between the Corporation and the Agent, including
       all schedules hereto, as it may be amended, modified, restated or
       supplemented from time to time;

       (e)     "APM" means Arctic Precious Metals, Inc., a company incorporated
       under the laws of Nevada;

       (f)     "Associate" has the meaning ascribed thereto in the BUSINESS
       CORPORATIONS ACT (Ontario) and shall include any entity which is an
       Associate of an Associate, and so on;

       (g)     "Audited Financial Statements" means the audited consolidated
       financial statements of the Corporation as at and for the 12 month
       fiscal period ended December 31, 1997, consisting of a balance sheet, an
       income statement and a statement of changes in financial position,
       together with the notes thereto, copies of which have been provided to
       the Agent;

       (h)     "Business Day" means any day other than Saturday, Sunday or any
       statutory holiday in Toronto, Canada;

                                       2
<PAGE>

       (i)     "Change of Control of the Corporation" has the same meaning as is
       given to that term in the Debentures;

       (j)     "Closing Date" means April 30th, 1998 or such other date as the
       Agent and the Corporation may agree upon as the Closing Date;

       (k)     "Closing Time" means 3:00 p.m. (Toronto time) on the Closing Date
       or such other time as the Agent and the Corporation may agree upon as
       the Closing Time;

       (l)     "Common Shares" means the common shares in the capital of the
       Corporation;

       (m)     "Consent" has the meaning as is given to that term in Section
       3.1(g) hereof;

       (n)     "Copperstone Property" has the same meaning as is given to that
       term in the Debentures;

       (o)     "Corporation" means Royal Oak Mines Inc., and includes any
       predecessors or successors of the Corporation;

       (p)     "Debentures" mean the Series A Senior Secured Debentures ("Series
       A Debentures") of the Corporation in the aggregate principal amount of
       U.S.$85,000,000 and the Series B Secured Debentures ("Series B
       Debentures") of the Corporation in the aggregate principal amount of
       U.S.$35,000,000 to be issued to the Lenders pursuant to Section 2.1,
       which debentures are in the forms attached as SCHEDULE A-1 AND A-2
       respectively to this Agreement;

       (q)     "Debt" has the same meaning as is given to that term in the
       Debentures;

                                      3
<PAGE>

       (r)     "Default" has the same meaning as is given to that term in the
       Debentures;

       (s)     "Disclosed Defaults" has the meaning given to such term in
       Section 3.1(f) hereof;

       (t)     "Documents" has the same meaning as is given to that term in the
       Debentures but includes this Agreement, the Royalty Agreement and the
       Royalty Debenture;

       (u)     "Event of Default" has the same meaning as is given to that term
       in the Debentures;

       (v)     "Existing Encumbrances" has the same meaning as is given to that
       term in the Debentures;

       (w)     "Excluded Assets" means the Windy Craggy Property;

       (x)     "generally accepted accounting principles" means the accounting
       principles so described and promulgated by the Canadian Institute of
       Chartered Accountants which are applicable as at the date on which any
       calculation made hereunder is to be effective or as at the date of any
       financial statements referred to herein, as the case may be;

       (y)     "Glencore Agreement" means the letter agreement dated November 5,
       1997 between the Corporation and Glencore Ltd. relating to the sale by
       the Corporation of copper concentrate;

       (z)     "Governmental Body" has the same meaning as is given to that term
       in the Debentures;

       (aa)    "Initial Purchase Price" has the meaning given to such term in
       Section 2.2(a) hereof;

                                      4
<PAGE>

       (bb)    "Intellectual Property" means all trade marks, trade names,
       patents, patent applications, copyrights, trade secrets, logos,
       processes, computer systems and application software which are owned or
       used by, or which relate to the business of, the Corporation or the
       Subsidiaries;

       (cc)    "Interim Financial Statements" means the unaudited consolidated
       financial statements of the Corporation as at and for the 2 month period
       ended February 28, 1998 consisting of a balance sheet, an income
       statement and a statement of changes in financial position together with
       any notes thereto, a copy of which has been provided to the Agent;

       (dd)    "Kemess Mine" means the Kemess North Property and the Kemess
       South Mine;

       (ee)    "Kemess North Property" means all present and future property and
       assets comprising or relating to what is generally referred to as the
       Kemess North Property in British Columbia, Canada including, without
       limitation, all mineral claims and leases referred to in SCHEDULE B-1
       hereto, all buildings, equipment, fixtures and other property and assets
       owned or leased by the Corporation (or in which the Corporation
       otherwise has an interest) situated or used at the Kemess North Property
       site, all operations, exploration and other activities carried on at
       such site and all permits, authorizations, licenses and similar
       approvals relating thereto;

       (ff)    "Kemess South Mine" means all present and future property and
       assets comprising or relating to what is generally referred to as the
       Kemess South Mine property in British Columbia, Canada including,
       without limitation, all mineral claims and leases referred to in
       SCHEDULE B-2 hereto, all buildings, equipment, fixtures and other
       property and assets owned or leased by the Corporation (or in which the
       Corporation otherwise has an interest) situated or used at the Kemess
       South Mine site, all operations, exploration and other activities
       carried on at such site and all permits, authorizations, licenses and
       similar approvals relating thereto;

       (gg)    "Kemess Mine Production Date" has the same meaning as is given to
       that term in the Debentures;

                                      5
<PAGE>

       (hh)    "Knowledge" of a party means the best knowledge of the senior
       management of that party (which in the case of the Corporation
       specifically includes but is not limited to the Kemess Mine Project
       Manager, the Kemess Mine Project Director and the Kemess Mine Manager of
       Project Accounting, after having made all reasonable inquiries;

       (ii)    "Lenders" means such Person or Persons who purchase the
       Debentures at the Closing Time or from time to time thereafter;

       (jj)    "Lien" has the same meaning as is given to that term in the
       Debentures;

       (kk)    "Material Authorizations" has the same meaning as is given to
       that term in the Debentures;

       (ll)    "Material Contracts" has the meaning given to that term in
       Section 3.1(x) hereof;

       (mm)    "Material Subsidiaries" means APM and all Subsidiaries each of
       which has total assets exceeding a fair market value of Can.$2,000,000;

       (nn)    "Materiality Threshold" means that the representation, warranty,
       covenant or other obligation in question shall apply only to subject
       matter which individually or in the aggregate is or should reasonably be
       expected, as determined by the Agent and the Lenders, acting reasonably,
       to be material to:

               (i)    the business, property or affairs of the Corporation
               taken as a whole;

               (ii)   the construction, ownership or operation of the Kemess
               Mine or the requirement that the Kemess Mine Production Date
               occur on or before December 31, 1998;

                                      6
<PAGE>

               (iii)  the Lenders, in their capacity as secured creditors of
               the Corporation under the Documents; or

               (iv)   the Agent in its capacity as a party to the Royalty
               Agreement and the Royalty Debenture;

       (oo)    "Mikwam Property" has the same meaning as is given to that term
       in the Debentures;

       (pp)    "Mortgaged Property" has the same meaning as is given to that
       term in the Debentures;

       (qq)    "Payment Certificate" has the meaning given to that term in
       Section 4.2(c) hereof;

       (rr)    "Payment Date" has the meaning given to that term in
       Section 2.2(b) hereof;

       (ss)    "Permitted Encumbrances" has the same meaning as is given to that
       term in the Debentures;

       (tt)    "Permitted Hedging Indebtedness" has the same meaning as is given
       to that term in the Debentures;

       (uu)    "Person" has the same meaning as is given to that term in the
       Debentures;

       (vv)    "Proceeds Conditions" means the conditions precedent in favour of
       the Agent that (i) the Kemess South Mine has produced concentrate over
       the immediately preceding 30 day period, and is able to sustain and
       maintain such production thereafter, of not less than 7500 short tons of
       concentrate yielding mineral content that is acceptable to Glencore Ltd.
       pursuant to the Glencore Agreement (without giving effect to any
       amendments thereof), (ii) at such time the Kemess South Mine accounts
       payable of the Corporation do not exceed 

                                       7
<PAGE>

       U.S.$15,000,000 and (iii) at such time the Kemess South Mine accounts 
       payable of the Corporation are not overdue in accordance with their 
       respective terms;

       (ww)    "Proposed Leaseback Assets" has the same meaning as is given to
       that term in the Debentures;

       (xx)    "Purchase Price" means (i) the Initial Purchase Price plus (ii)
       the aggregate of the Additional Purchase Price Payments, if any;

       (yy)    "Reorganization Undertaking" has the meaning given to that term
       in Section 4.1(1) hereof;

       (zz)    "Royalty Agreement" means the royalty agreement relating to the
       Kemess South Mine, between the Agent and the Corporation in the form
       attached as SCHEDULE C to this Agreement;

       (aaa)   "Royalty Debenture" means the debenture in favour of the Agent
       which, inter alia, secures the Corporation's obligations to the Agent
       pursuant to the Royalty Agreement in form and substance satisfactory to
       the Agent;

       (bbb)   "Sale" has the same meaning as is given to that term in the
       Debentures;

       (ccc)   "Security" has the same meaning as is given to that term in the
       Debentures;

       (ddd)   "Security Documents" has the same meaning as is given to that
       term in the Debentures;

       (eee)   "Senior Secured Debenture Facility" means the senior secured
       debenture facility in the original principal amount of Can.$19,500,000
       and U.S.$30,700,000 provided to the Corporation by DDJ Canadian High
       Yield Fund, Goldman, Sachs & Co. and Mellon Bank;

                                       8
<PAGE>

       (fff)   "Series A Debentures" and "Series B Debentures" have the meanings
       ascribed thereto in Section 1.1(p) hereof;


       (ggg)   "Subordinated Notes" means the outstanding 11% Series B Senior
       Subordinated  Notes of the Corporation due 2006 in the aggregate
       principal amount of U.S.$175,000,000;

       (hhh)   "Subordinated Note Trust Indenture" means the Trust Indenture
       dated as of August 12, 1996 among the Corporation, Kemess Mines Inc. and
       Mellon Bank, F.S.B. relating to the Subordinated Notes, as amended by
       (i) the First Supplemental Indenture dated and effective as of
       December 31, 1997 by and between the Corporation and Chase Manhattan
       Trust Company, National Association, the successor to Mellon Bank,
       F.S.B. as Trustee, (ii) the Second Supplemental Indenture dated and
       effective as of January 31, 1998 by and between the Corporation and
       Chase Manhattan Trust Company, National Association, as Trustee and,
       (iii) such other amendments as may be required in connection with the
       transaction contemplated by this Agreement and the other Documents;

       (iii)   "Subsidiaries" means all of the corporations listed on SCHEDULE E
       and any other corporations or limited liability companies which are or
       hereafter become directly or indirectly controlled by the Corporation
       and for the purposes of this definition the Corporation shall be deemed
       to control a corporation if the Corporation beneficially owns, directly
       or indirectly, shares to which are attached more than 50% of the voting
       rights ordinarily exercisable at meetings of shareholders of such
       corporation and/or 50% or more of the issued and outstanding fully
       participating shares of such corporation and the Corporation shall be
       deemed to own beneficially shares beneficially owned by a corporation
       controlled by it, and so on indefinitely, and the Corporation shall be
       deemed to control a limited liability company where it owns more than
       50% of the equity interests in such limited liability company; 

       (jjj)   "Taxes" means all taxes of any kind or nature whatsoever
       including, without limitation, income taxes, sales or value-added taxes,
       levies, stamp taxes, royalties, duties, and all fees, deductions,
       compulsory loans and withholdings imposed, levied, collected, withheld
       or assessed as of the date hereof or at any time in the future, by any
       governmental authority of or within Canada or any other jurisdiction
       whatsoever having power to tax, together 

                                       9

<PAGE>

       with penalties, fines, additions to tax and interest thereon; and

       (kkk)   "Windy Craggy Property" means the mineral claims in and around
       Windy Craggy mountain in the Tatshenshini/Alsek region of northwestern
       British Columbia, more particularly described in SCHEDULE F hereto.


1.2    MONETARY REFERENCES

       Any reference in this Agreement to "Canadian dollars" or "Can. $" or
similar terms shall be deemed to be a reference to lawful money of Canada and
any reference in this Agreement to "United States of America dollars", "United
States dollars" or "U.S. $" or similar terms shall be deemed to be a reference
to lawful money of the United States of America.  If no such references are made
with respect to any particular sum or obligation, the sum or obligation in
question shall be deemed to refer to lawful money of Canada.


1.3    GOVERNING LAW

       This Agreement shall be governed by and construed in accordance with the
laws of the Province of Ontario and the laws of Canada applicable therein.  The
Corporation submits to the jurisdiction of the courts of Ontario to determine
all issues whether at law or in equity, arising from this Agreement.


1.4    USE OF SINGULAR AND PLURAL

       Words importing the singular include the plural and vice versa and words
importing gender include all genders.


1.5    INVALIDITY OF PROVISIONS

       Each of the provisions contained in this Agreement is distinct and
severable and a declaration of invalidity, illegality or unenforceability of any
such provision or part thereof by a court of competent jurisdiction shall not
affect the validity or enforceability of any other provision hereof or thereof. 
Without limiting the generality of the foregoing, if any amounts on account of
fees or otherwise payable by the Corporation to the Agent hereunder exceed the
maximum amount recoverable under applicable law, the amounts so payable
hereunder shall be reduced to the maximum amount recoverable under applicable
law.

                                       10
<PAGE>

1.6    REFERENCES

       Except as otherwise specifically provided, reference in this Agreement
to any contract, agreement or any other instrument shall be deemed to include
references to the same as varied, amended, supplemented or replaced from time to
time and reference in this Agreement to any enactment, including without
limitation any statute, law, by-law, regulation, ordinance or order, shall be
deemed to include references to such enactment as re-enacted, amended or
extended from time to time.


1.7    GENERALLY ACCEPTED ACCOUNTING PRINCIPLES

       Unless otherwise specifically provided herein, all accounting terms
shall be applied and construed in accordance with generally accepted accounting
principles consistently applied.


1.8    INTERPRETATION NOT AFFECTED BY HEADINGS

       The division of this Agreement into articles, sections, paragraphs,
subsections and clauses and the insertion of headings are for convenience of
reference only and shall not affect the construction or interpretation of this
Agreement.  The terms "this Agreement", "hereof", "herein", "hereunder" and
similar expressions refer to this Agreement and the schedules hereto and not to
any particular article, section, paragraph, clause or other portion hereof and
include any agreement or instrument supplementary or ancillary hereto.


1.9    COMPUTATION OF TIME PERIODS

       In this Agreement, in the computation of periods of time from a
specified date to a later specified date, unless otherwise expressly stated, the
word "from" means "from and including", and the words "to" and "until" each mean
"to but excluding".


1.10   DAY NOT A BUSINESS DAY

       In the event that any day on or before which any action is required to
be taken hereunder is not a Business Day, then such action shall be required to
be taken at or before the requisite time on the next succeeding day that is a
Business Day.

                                       11
<PAGE>

ARTICLE 2 - TRANSACTIONS

2.1    ISSUANCE OF DEBENTURES TO THE LENDERS

       On the terms and subject to the conditions hereof, at the Closing Time
the Agent will cause the Lenders to purchase from the Corporation and the
Corporation will issue and sell to the Lenders, the Series A Debentures and the
Series B Debentures substantially in the form attached hereto as SCHEDULES A-1
AND A-2 respectively.

2.2    PURCHASE PRICE

       (a)     Subject to compliance with the conditions precedent set forth in
       Section 4.1 hereof and the terms hereof, on the Closing Date, the Agent
       shall cause the Lenders to deliver to the Corporation, on account of the
       purchase price for the Debentures, certified cheques, bank drafts or
       wire transfers in an amount equal to U.S.$90,000,000 (the "Initial
       Purchase Price") less any unpaid fees and expenses payable by the
       Corporation to the Lenders or the Agent pursuant to Section 2.3 hereof. 
       The Corporation hereby irrevocably directs the Lenders to pay such fees
       and expenses to the Agent or the Lenders, as the case may be, on its
       behalf.  The Initial Purchase Price shall be allocated first to the
       Series B Debentures and second, to the Series A Debentures.


       (b)     The Additional Purchase Price shall be paid as hereinafter set
       forth.  Subject to compliance with the conditions precedent set forth in
       Section 4.2 hereof and the terms hereof, on the 5th Business Day
       following the Corporation providing to the Agent a notice in writing
       requesting an Additional Purchase Price Payment, which notice shall set
       out the amount thereof, the Agent shall cause the applicable Lenders to
       deliver to the Corporation a certified cheque, bank draft or wire
       transfer in the amount set forth in such notice (the amount of each such
       payment made by the Lenders under this Section 2.2(b) being referred to
       as an "Additional Purchase Price Payment" and the date of each payment
       to be made hereunder being referred to as a "Payment Date").  The
       aggregate of all Additional Purchase Price Payments hereunder shall be
       the "Additional Purchase Price".  Each Additional Purchase Price Payment
       shall be in a minimum amount equal to the lesser of (i) U.S.$10,000,000
       (and in denominations in excess thereof in multiples of U.S.$100,000.00)
       and (ii) the unpaid portion of the Aggregate Additional Purchase Price. 
       The Corporation hereby irrevocably directs the Lenders to deduct from
       any Additional Purchase Price Payment payable to the Corporation the
       amount of any unpaid fees and expenses payable by the Corporation to the

                                       12
<PAGE>

       Lenders or the Agent pursuant to Section 2.3 hereof and hereby directs
       the Lenders to pay such fees and expenses to the Agent or the Lenders,
       as the case may be, on its behalf.  Notwithstanding anything to the
       contrary contained in this Agreement or any of the Documents, neither
       the Agent nor the Lenders shall have any obligation to make any
       Additional Purchase Price Payments if any of the conditions precedent
       set forth in Section 4.2 hereof shall not have been satisfied within the
       time limited therefor.  For greater certainty, neither the Agent nor the
       Lenders will have any obligation to make any Additional Purchase Price
       Payments on or after August 15, 1998, or which in the aggregate will
       exceed the Agregate Additional Purchase Price.


2.3    FEES AND EXPENSES

       (a)     The Corporation acknowledges that the Agent and Lenders have
       earned a non-refundable fee of U.S.$2,400,000 (which is payable as to
       U.S.$1,200,000 to the Agent, as to U.S.$840,000.00 to the Lenders
       purchasing Series A Debentures on a pro rata basis, and as to
       U.S.$360,000.00 to the Lenders purchasing Series B Debentures on a pro
       rata basis, which the Corporation will pay on the Closing Date.  The
       Corporation acknowledges and agrees that it will be responsible for and
       will pay such fee whether or not the transactions hereunder are
       completed and even if it is the Agent who terminates its obligations
       under this Agreement pursuant to Section 4.3 hereof, unless such
       termination is as a result of the Agent expressly terminating its
       obligations hereunder solely pursuant to and in reliance on
       Section 4.1(n) hereof, in which event the fee provided for in this
       Section 2.3(a) shall be reduced to U.S.$100,000 which shall thereupon be
       payable upon demand by the Corporation to the Agent.  Any fee payable by
       the Corporation to the Agent under this Section 2.3(a) may be made by
       the Lenders paying the amount of such fees out of the Initial Purchase
       Price in accordance with Section 2.2(a) hereof;

       (b)     The Corporation acknowledges and agrees that on the Closing Date,
       the Agent will have earned and the Corporation will pay to the Agent an
       additional fee, by executing and delivering to the Agent the Royalty
       Agreement; and

       (c)     The Corporation acknowledges and agrees that in addition to the
       fees payable pursuant to Section 2.3(a) and (b) hereof, it will be
       responsible for and will pay or reimburse each of the Agent and the
       Lenders forthwith on demand for all reasonable fees, expenses and other
       out-of-pocket expenses paid or incurred by each of the Agent and the
       Lenders, its representatives and 

                                       13
<PAGE>

       consultants relating to their investigation of the Corporation, the 
       Subsidiaries and their respective businesses, the negotiation, 
       preparation and review of this Agreement and the other Documents and all
       other matters pertaining to the transactions hereby contemplated, 
       including, without limitation, all reasonable fees, expenses and other 
       out-of-pocket expenses paid or incurred by each of the Agent and the 
       Lenders for legal advice and services in connection with such 
       transactions.  The Corporation acknowledges and agrees that it will be 
       responsible for and will pay all such reasonable fees, expenses and 
       other out-of-pocket expenses whether or not the transactions hereunder 
       are completed and even if it is the Agent who terminates this Agreement 
       pursuant to Section 4.3 hereof.  The Agent acknowledges receipt of the 
       sum of U.S.$100,000 and Can.$100,000 on account of the Corporation's 
       obligation under this Section 2.3(c).

2.4    USE OF PROCEEDS

       The Corporation hereby covenants, agrees, represents and warrants with
and to the  Agent and the Lenders that the Corporation will use the proceeds
from the issuance and sale of Debentures to the Lenders:

(a)    to repay all amounts outstanding under the Senior Secured Debenture
       Facility;

(b)    to repay those Kemess South Mine accounts payable of the Corporation
       listed in SCHEDULE G; and

(c)    to fund capital and non-capital expenses of the Corporation in
       connection with the construction, development and operation of the
       Kemess South Mine.

In addition to the foregoing, and until the occurrence of a Default or Event of
Default hereunder:

(d)    the Corporation may use such proceeds for general corporate purposes in
       an amount not to exceed the aggregate of U.S.$20,000,000; and

(e)    to the extent that the amounts referred to in Section 2.4(d) hereof are
       insufficient to satisfy the general corporate purposes of the
       Corporation, and provided that the Proceeds Conditions have then been
       and remain satisfied, the Corporation may then use such proceeds for
       general corporate purposes.


                                       14

<PAGE>

ARTICLE 3 - REPRESENTATIONS AND WARRANTIES

3.1    REPRESENTATIONS AND WARRANTIES BY THE CORPORATION

       The Corporation hereby represents and warrants to the Agent and to the
Lenders as follows and acknowledges that each of the Agent and the Lenders is
relying on such representations and warranties in connection with its entering
into this Agreement, the Lenders's purchase of the Debentures pursuant to this
Agreement, and in entering into the other transactions contemplated by this
Agreement:

       (a)     INCORPORATION AND STATUS OF THE CORPORATION.  The Corporation is
       the successor corporation resulting from the amalgamation on December
       29, 1997 of the former Royal Oak Mines Inc. and Kemess Mines Inc., is
       duly amalgamated and organized under the laws of its jurisdiction of
       incorporation, is in good standing in each jurisdiction where, by reason
       of its business or assets, it is required to be qualified or licensed
       and has, subject to the Materiality Threshold, all powers, licenses,
       franchises and permits required to own its assets and carry on its
       business as the same is presently carried on.

       (b)     POWER AND CAPACITY.  The Corporation has the corporate power to
       enter into each of this Agreement and the other Documents and to do all
       acts and things as are required or contemplated hereunder or thereunder
       to be done, observed and performed by it.

       (c)     DUE AUTHORIZATION, NO CONTRAVENTION.  The entering into and the
       performance by the Corporation of this Agreement, the other Documents
       and the transactions contemplated herein and therein (i) have been duly
       authorized by all necessary corporate action on the part of the
       Corporation and (ii) do not and will not contravene, violate, breach or
       result in any default under the articles, by-laws, constating documents
       or other organizational documents of the Corporation, or, other than the
       Senior Secured Debenture Facility and the Subordinated Note Trust
       Indenture, any agreement to which the Corporation is a party or, subject
       to the Materiality Threshold, any term or provision of any regulatory
       license or permit or any order of any court, governmental authority or
       regulatory body or any law or regulation of any jurisdiction in which
       the Corporation carries on its business.

       (d)     BINDING AGREEMENT.  This Agreement and the other Documents have

                                       15
<PAGE>

       been duly executed and delivered by the Corporation and constitute
       legal, valid and binding obligations enforceable against the Corporation
       in accordance with their terms, subject only to the availability of
       equitable remedies and the effect of bankruptcy, insolvency and similar
       laws affecting the rights of creditors generally.

       (e)     NO PROCEEDINGS.  As of the date of execution of this Agreement,
       except as is disclosed in SCHEDULE H and subject to the Materiality
       Threshold there is no litigation, arbitration or administrative
       proceedings, actions, suits or investigations outstanding, pending or,
       to the Knowledge of the Corporation, threatened against the Corporation
       or any of its properties.  None of the transactions contemplated hereby
       or by the other Documents have been enjoined by any Governmental Body
       and no suit or other proceeding challenging the transactions
       contemplated hereby or by the other Documents has been instituted or, to
       the Knowledge of the Corporation, threatened, and no investigative
       demand on the Corporation or any Subsidiary related to such transactions
       has been made by any Governmental Body and no Governmental Body or
       Person has, to the Knowledge of the Corporation, threatened to take any
       such action.

       (f)     COMPLIANCE WITH APPLICABLE DOCUMENTS AND LAWS.  Except as may be
       expressly set out in SCHEDULE I (the "Disclosed Defaults") (which
       Disclosed Defaults, other than amounts owed to the holders of those
       Existing Encumbrances set out in Part I of SCHEDULE C1 to the
       Debentures, will have been remedied on or before the Closing Date), the
       Corporation is not in violation of, or in default under (and there does
       not exist any event or condition which, after notice or lapse of time or
       both, would constitute such a default under), any term of its articles,
       by-laws, constating documents or other organizational documents, or,
       subject to the Materiality Threshold, under any term of any agreement,
       instrument, judgment, decree, order, statute, injunction, governmental
       regulation, rule or ordinance (including, without limitation, those
       relating to zoning, city planning or similar matters) applicable to the
       Corporation, or to which the Corporation is bound or which may otherwise
       be applicable to any property of the Corporation.

       (g)     NO CONSENTS REQUIRED.  Except as may be expressly set out in
       SCHEDULE J hereto (the "Consents") there are no consents, permits,
       approvals, confirmations and acknowledgements required in order for the
       Corporation to carry out the transactions contemplated hereby and by the
       Documents, provided that the granting of fixed and specific Liens or
       assignments which the 

                                       16
<PAGE>

       Lenders may request following the Closing Date pursuant to its right to 
       do so under the Documents may require consents or approval of other 
       Persons so as not to constitute events of default under any agreements 
       with such Persons.

       (h)     SHARES.  SCHEDULE E sets out the name and jurisdiction of
       incorporation, continuance or amalgamation of the Corporation and each
       Subsidiary, and SCHEDULE K accurately describes the respective
       authorized and issued share capital as of the date hereof of the
       Corporation and each Material Subsidiary.  Other than as disclosed in
       Section 3.1(i) hereof, there are no shareholders' agreements, pooling
       agreements, voting trusts or other similar agreements with respect to
       the ownership or voting of any of the shares of the Corporation or of
       Material Subsidiaries or pursuant to which any person may have any right
       or claim in connection with any existing or past equity interest in the
       Corporation or such Material Subsidiaries.

       (i)     NO OBLIGATION TO ISSUE SHARES.  Except for (i) agreements,
       options, warrants, rights and conversion or other rights granted to
       current or former directors and employees of the Corporation in respect
       of which no more than 10 million Common Shares of the Corporation may be
       acquired, (ii) agreements to issue to the Corporation shares of APM
       (which shares when issued will be subject to the Security and all share
       certificates in respect thereof will, at the request of the Lenders, be
       delivered to the Lenders), and (iii) special warrants and common shares
       which may be issued by the Corporation to its creditors, in lieu of
       partial payment to such creditors, and to other Persons, there are no
       agreements, options, warrants, rights of conversion or other rights
       pursuant to which the Corporation or any of the Subsidiaries is or may
       become obligated to issue any shares or any securities convertible into,
       or exchangeable for, shares.

       (j)     FINANCIAL STATEMENTS.  The Audited Financial Statements and the
       Interim Financial Statements have been prepared in accordance with
       generally accepted accounting principles consistently applied (subject
       to usual year-end adjustments in the case of the Interim Financial
       Statements) and fairly present the financial position of the Corporation
       and the Subsidiaries and the results of their operations at the times
       and for the periods indicated.  The Corporation and each of the
       Subsidiaries has no outstanding liabilities, contingent or otherwise,
       other than those disclosed in the Audited Financial Statements and the
       Interim Financial Statements and other than trade or business
       obligations subsequently incurred in the ordinary course of business,
       which such trade and business obligations are currently in good standing
       in accordance with their respective terms, other than as set forth in
       SCHEDULE L.

                                       17
<PAGE>

       (k)     PERMITS, COMPLIANCE WITH LAWS.  This section 4.1(k) shall be
       subject to the Materiality Threshold.  The Corporation has all licences,
       permits, approvals and franchises that it requires, or is required to
       have, to own its properties and assets and to carry on its business as
       presently conducted including, without limitation, in respect of the
       construction and development of the Kemess South Mine.  All such
       licences, permits, approvals and franchises are in good standing and,
       except as is disclosed in item 11 of SCHEDULE H, no actions,
       proceedings, investigations or other steps of any kind are in process,
       pending, to the Knowledge of the Corporation threatened, or reasonably
       foreseeable which might result in any such licence, permit, approval or
       franchise being terminated, revoked, withdrawn, suspended or otherwise
       made unavailable to the Corporation for any period of time.  The
       Corporation has applications pending for all additional licences,
       permits, approvals and franchises necessary or desirable for the
       commencement of mining operations at the Kemess Mine in the manner and
       to the full extent contemplated in plans and projections disclosed to
       the Lenders (a list of which  additional licenses are attached hereto as
       SCHEDULE M) and has no reason to believe that any or all such additional
       licences, permits, approvals and franchises will not be granted to
       prevent, impair or interfere with the Kemess Mine Production Date
       occurring on or before December 31, 1998.  Except as is disclosed in
       item 11 of SCHEDULE H, the Corporation is conducting its business in
       compliance with all applicable laws, regulations, by-laws and ordinances
       of each jurisdiction in which its business is carried on, including
       without limitation all laws, regulations, by-laws and ordinances
       relating to mining concessions.

       (l)     NO RESTRICTIONS.  Except as may be provided for in agreements
       between the Province of British Columbia and the Corporation respecting
       economic assistance, copies of which have been provided to the Agent,
       the Corporation is not a party to or bound by any agreement which would
       restrict or limit its right to carry on any business or activity or to
       solicit business from any Person or in any geographical area or
       otherwise to conduct the business of the Corporation.  The Corporation
       is not subject to any legislation or any judgment, order or requirement
       of any court or governmental authority which is not of general
       application to persons carrying on a business similar to the business of
       the Corporation.

       (m)     LIMITATION ON PAYMENT RESTRICTIONS.  Except for restrictions
       contained herein, in the Senior Secured Debenture Facility and in the
       Subordinated Note Trust Indenture, neither the Corporation nor any
       Subsidiary is subject to any 

                                       18
<PAGE>

       consensual restriction on its ability (a) to pay dividends or make any 
       other distributions on its equity securities to, or pay any indebtedness
       owing to, or repurchase or redeem any equity securities from, the 
       holders of such equity securities, the Corporation or any other 
       Subsidiary, (b) to make any loans or advances to the Corporation or any
       other Subsidiary, or (c) to transfer any of its property or assets to 
       the Corporation or any other Subsidiary.

       (n)     NO MATERIAL ADVERSE CHANGES, DAMAGE OR ACCIDENTS.  Since March 1,
       1998, the Corporation has operated its business diligently and only in
       the ordinary course of business and except for the Disclosed Defaults,
       there has not been any material adverse change in the condition
       (financial or otherwise), assets, liabilities, affairs, business or
       operations of the Corporation, any substantial loss of or damage to the
       assets of the Corporation, or any accident (subject to the Materiality
       Threshold) relating to the mines, properties or mining operations of the
       Corporation in which any employee of the Corporation was injured.  For
       greater certainty, since March 1, 1998 the Corporation has not:

               (i)    incurred any liabilities other than in the ordinary
               course of business consistent with past practice;

               (ii)   sold, encumbered, assigned or transferred any assets or
               properties of the Corporation, other than for fair market value,
               to purchasers at arms length to the Corporation and in the
               ordinary course of business consistent with past practice;

               (iii)  created, incurred, assumed or guaranteed any Debt except
               in the ordinary course of business consistent with past practice
               or subjected any of its assets to any Lien except for Existing
               Encumbrances;

               (iv)   changed or amended its governing documents in any
               respect;

               (v)    declared, set aside, paid or made any distributions in
               cash or property on its equity securities including its Common
               Shares;

               (vi)   directly or indirectly redeemed, purchased or otherwise
               acquired any of its equity securities;

                                       19
<PAGE>

               (vii)  other than the resignations of John May, Nancy Deshaw and
               Scott Lampe, suffered any resignation or termination of
               employment of any key officers or directors or become aware of
               any impending resignation or termination of employment of any
               such key officers or directors;

               (viii) except in the ordinary course of its business, or as
               disclosed in writing to the Agent prior to the date hereof,
               materially increased the compensation payable or to become
               payable to any of its officers or directors or materially
               increased any bonus, insurance, pension or other employee benefit
               plan, payment or arrangement made for or with any such officers
               or directors;

               (ix)   materially changed its accounting methods, principles or
               practices; or

               (x)    entered into any agreement or commitment to do any of the
               things described in this section.

       (o)     NO WORK ORDERS.  Except as is disclosed in item 11 of SCHEDULE H
       and subject to the Materiality Threshold, no work orders, directions or
       notices have been issued pursuant to any applicable law relating to the
       business of the Corporation or any part of the Mortgaged Property or
       relating to or pursuant to any environmental matters affecting the
       foregoing and the Corporation has not received any notification from any
       Governmental Body that any work, repairs, construction or capital
       expenditures are required to be made in respect of the Mortgaged
       Property or any part thereof as a condition of continued compliance with
       any applicable law or any Material Authorizations issued thereunder.

       (p)     NO DEFAULT.  Subject to the Materiality Threshold, the
       Corporation is not in default or breach under any material commitment or
       obligation under the terms and conditions relating to any Material
       Authorizations and there exists no state of facts which, after notice or
       the passage of time or both, would constitute such a default or breach
       and there are no proceedings in progress, pending or, to the Knowledge
       of the Corporation, threatened which may result in the revocation,
       cancellation, suspension, non-grant or any adverse 

                                       20
<PAGE>

       modification of any Material Authorization except as is disclosed in 
       item 11 of SCHEDULE H. The Corporation has obtained all Material 
       Authorizations necessary or desirable to carry on all activities 
       currently and previously carried on at the Kemess Mine.
       
       (q)     NON-ARM'S LENGTH TRANSACTIONS.  Except as is described in
       employment agreements and correspondence delivered to the Agent prior to
       the date hereof, the Corporation is not a party to any contract,
       commitment or transaction (including by way of loan) with any officer,
       director or shareholder of the Corporation, any of the Subsidiaries, or
       any of their respective affiliates or associates, other than as
       disclosed in the Audited Financial Statements and the Interim Financial
       Statements and other than employment contracts in the ordinary course of
       business.

       (r)     TAX MATTERS.

               (i)    The Corporation has prepared and filed on a timely basis
               with all appropriate Governmental Bodies all returns with respect
               to Taxes and other documents that it is required to file in
               respect of any Taxes for all fiscal periods ending on or prior to
               the Closing Date and all such returns or other documents are
               correct and complete in all material respects;

               (ii)   The Corporation has paid in full all Taxes due on or
               before the Closing Date and, in the case of Taxes accruing on or
               before the Closing Date that are not due on or before the Closing
               Date, the Corporation will have made adequate provision in its
               books and records and financial statements for such payment; and
               the Corporation does not have any liability for Taxes other than
               those provided for in the Audited Financial Statements and the
               Interim Financial Statements and those arising subsequently in
               the ordinary course of the operation of its business;

               (iii)  The Corporation has withheld from each payment made to
               any of its present or former employees, officers, directors and
               to all persons who are non-residents of the applicable
               jurisdictions all amounts required pursuant to Applicable Law to
               be withheld or remitted and will continue to do so until the
               Closing Date and furthermore has remitted such amounts within the
               applicable periods to the appropriate Governmental Body; the
               Corporation has remitted all Canada Pension Plan 

                                       21
<PAGE>

               contributions, unemployment insurance premiums, employer health 
               taxes and other Taxes payable by it in respect of its employees 
               and has or will have remitted such amounts to the appropriate 
               Governmental Body within the time required under the applicable 
               legislation; and the Corporation has charged, collected and 
               remitted on a timely basis all Taxes as required under applicable
               legislation on any sale, supply, or delivery whatsoever, made by 
               the Corporation;
               
               (iv)   Except for a disputed assessment of fuel taxes payable by
               the Corporation to the government of Canada in the approximate
               amount of Can.$100,000, there are no reassessments of the
               Corporation with respect to Taxes that have been issued and are
               outstanding; no Governmental Body has challenged, disputed or
               questioned the Corporation in respect of Taxes or in respect of
               any returns, filings or other reports filed under any statute
               providing for Taxes; the Corporation has not received any
               indication from any Governmental Body that an assessment or a
               reassessment in respect of the Corporation is proposed; and the
               Corporation has not executed or filed any agreement extending the
               period for assessment, reassessment or collection of any Taxes.

       (s)     NO ENCUMBRANCES.  Each of the Corporation and APM owns and has
       good and marketable title, free and clear of all Liens except Existing
       Encumbrances, to all assets used in connection with its business
       including, without limitation, all assets reflected on the balance sheet
       included in the Audited Financial Statements and the Interim Financial
       Statements or acquired by it after the date of such balance sheet except
       for changes in such assets in the ordinary course of business subsequent
       to that date.  All material operating facilities, equipment and other
       material items of tangible property and assets owned by the Corporation
       are in good operating condition and repair, subject to normal wear and
       maintenance and having regard to their respective ages, are usable in
       the regular and ordinary course of business and conform to all
       Applicable Laws relating to their construction, use and operation,
       except where such failure, individually or in the aggregate, would not
       have a material adverse effect on the Corporation.  The Corporation's
       annual report on Form 10-K for the fiscal year ended December 31, 1997
       filed with the United States Securities And Exchange Commission pursuant
       to the Securities Exchange Act of 1934, as amended contains a complete
       and accurate description of all material property and assets owned by
       the Corporation except that since the date of such annual report, the
       Proposed Leaseback Assets have been sold and leased back by the
       Corporation pursuant to an operating lease.  SCHEDULE 

                                       22
<PAGE>

       N contains a complete and accurate description of all material 
       property and assets owned by the Corporation relating to the Kemess 
       Mine.  Subject to the Materiality Threshold, all equipment or other 
       tangible assets or property situated on the premises of the 
       Corporation, or necessary to the operation of the business of the 
       Corporation, which is leased under a capital lease or under a 
       material operating lease is listed in SCHEDULE O.  Subject to the 
       Materiality Threshold, the Corporation is in compliance with all 
       terms of agreements and arrangements governing the leased items 
       listed in SCHEDULE O.

       (t)     MATERIAL INDEBTEDNESS.  SCHEDULE P contains a list of all
       material indebtedness of the Corporation in excess of Can$1,000,000 and
       the identity of the Persons to whom it is owed.  The accounts payable of
       the Corporation listed in SCHEDULE G relate only to the construction,
       development and operation of the Kemess South Mine.

       (u)     SECURITY DOCUMENTS

               (i)    At the Closing Time, the Security Documents and the other
               Documents (other than this Agreement, the Royalty Agreement and
               the Royalty Debenture) will create a valid and enforceable
               security interest and Lien upon the Mortgaged Property securing
               the payment and satisfaction of all obligations of the
               Corporation and APM to the Lenders.  At the Closing Time, such
               security interests will be perfected security interests subject
               to no prior Liens or Liens ranking senior in priority to the
               Liens in favour of the Lenders, except for such Liens in favour
               of the Agent pursuant to the Royalty Agreement and the Royalty
               Debenture and except for such Liens relating to or securing Debt
               of the Corporation not in excess of Can.$10,000,000 as may be
               held by holders of those Existing Encumbrances set out in Part 1
               of SCHEDULE C1 to the Debentures.

               (ii)   At the Closing Time, the Royalty Agreement and the
               Royalty Debenture will create a valid and enforceable security
               interest and Lien upon the Kemess South Mine securing the payment
               and satisfactions of all obligations thereunder of the
               Corporation to the Agent.  At the Closing Time, such security
               interests will be perfected security interests subject to no
               prior Liens or Liens ranking senior in priority to the Liens in
               favour of the Agent, except for such Liens relating to or
               securing Debt of the Corporation not in excess of Can.$10,000,000
               as may be held by holders of those Existing Encumbrances set out
               in Part 1 of SCHEDULE C1 to the Debentures.

                                       23
<PAGE>

       (v)     EMPLOYMENT MATTERS.  Except as is disclosed in SCHEDULE Q, the
       Corporation is not a party to or is not bound by any:

               (i)    written contract or commitment for the employment of any
               employee or officer providing for an annual salary (including
               benefits) of in excess of Can.$200,000 or a payment on
               termination of in excess of six months salary and benefits;

               (ii)   oral contract or commitment for the employment of any
               employee or officer, except for contracts of indefinite hire
               terminable by the Corporation without cause on reasonable notice;

               (iii)  in the case of the Kemess Mine only, contract with or
               commitment to any trade union, council of trade unions, employee
               bargaining agent or affiliated bargaining agent (collectively
               called "labour representatives") and the Corporation has not
               conducted negotiations with respect to any such future contracts
               or commitments; no labour representatives hold bargaining rights
               with respect to any employees of the Corporation relating to the
               Kemess Mine; no labour representatives have applied to have the
               Corporation declared a related employer pursuant to the
               applicable labour legislation; and, to the Knowledge of the
               Corporation, there are no current or threatened attempts to
               organize or establish any trade union or employee association
               with respect to the Kemess Mine project provided, however, that
               the Corporation anticipates that steps may be taken by its
               employees to unionize and negotiate collective bargaining
               agreements for the Kemess Mine at some time in the future; or

               (iv)   except as is disclosed in financial information made
               available to the Agent prior to the date hereof and subject to
               the Materiality Threshold, bonus, pension, multi-employer, profit
               sharing, deferred compensation, retirement, disability, health
               insurance or similar benefit plan, with respect to any of its
               employees or others (including without limitation any agreements
               in respect of employee share ownership plans), other than Canada
               Pension Plan, the Ontario Health Insurance Plan and other similar
               health plans established and administered by any other
               governmental authority or workers' compensation insurance

                                       24
<PAGE>

               provided pursuant to statute.

       Subject to the Materiality Threshold, there is no work stoppage or other
       concerted action, grievance or dispute existing or, to the Knowledge of
       the Corporation, threatened against the Corporation, and there is no
       material complaint, grievance, claim, work order or investigation that
       has been filed, made, commenced or, to the Knowledge of the Corporation,
       threatened against the Corporation pursuant to any human rights,
       occupational health and safety, workers compensation, employment
       standards or pay equity legislation or any similar legislation of any
       jurisdiction in which the Corporation carries on its business.

       (w)     INTELLECTUAL PROPERTY.  The Corporation owns and has good and
       marketable title, free and clear of all Liens except Existing
       Encumbrances, to the Intellectual Property.  The conduct of the business
       of, and the use of the Intellectual Property by the Corporation does not
       infringe, and the Corporation has not received any notice, complaint,
       threat or claim alleging infringement of, any patent, trade mark, trade
       name, copyright, industrial design, trade secret or other propriety
       right of any other Person.  To the Knowledge of the Corporation, the
       Intellectual Property which is not owned by the Corporation is being
       used with the consent of, and in accordance with the consent or licence
       from, the rightful owner thereof.  The Corporation has taken all
       necessary steps to establish, preserve and protect its rights in the
       Intellectual Property which is material to the Corporation.

       (x)     MATERIAL CONTRACTS.  SCHEDULE R contains a complete list of all
       agreements of the Corporation which are material to the Kemess Mine and
       which have not yet been fully performed by the parties thereto,
       including without limitation agreements which relate to construction
       underway or proposed at the Kemess Mine and including, without
       limitation, royalty, refining and shipping agreements (the "Material
       Contracts").  Subject to the Materiality Threshold, and other than the
       Disclosed Defaults (which Disclosed Defaults, other than amounts owed to
       those holders of the Existing Encumbrances set out in Part I of SCHEDULE
       C1 to the Debentures, will have been remedied on or before the Closing
       Date), each of the Material Contracts is in full force and effect
       without amendment, and there has been no default under any of them, or
       under any other material commitment or obligation, by the Corporation
       or, to the Knowledge of the Corporation, any other party, nor has any
       event occurred that, with the giving of notice, lapse of time or any
       other condition subsequent, would constitute a default under or would

                                       25
<PAGE>

       otherwise allow the termination of any Material Contract.

       (y)     MINING CONCESSIONS.  SCHEDULES B-1 AND B-2 contains a complete
       and accurate list of all material mining claims, concessions and leases
       in which the Corporation has an interest relating in any way to the
       Kemess Mine, including, without limitation, all mining claims,
       concessions and leases in respect of which the Corporation has any
       obligation to contribute funds or make payments, other than fees or
       taxes payable in the ordinary course under the regulations governing
       such claims, concessions or leases.  The Corporation is the absolute
       beneficial owner of, and has good and marketable title to, such mining
       claims, concessions and leases in accordance with governing laws and
       regulations, free of all Liens except for such rights as may be held by
       Kemess South Resources Limited Partnership as disclosed in item (a) of
       Part II of SCHEDULE C1 to the Debenture, by the Lenders under the Senior
       Secured Debenture Facility and by the holders of the Existing
       Encumbrances.

       (z)     PRICING, HEDGING PROTECTION.  Subject to the Materiality
       Threshold, SCHEDULE S contains a complete and accurate list and
       description of all hedging or related arrangements to which the
       Corporation is a party or by which it is bound including, without
       limitation, forward sale contracts, options, interest rate swap
       agreements, currency swap agreements, derivative agreements and similar
       arrangements.  None of the hedging or related arrangements entered into
       by the Corporation provides for the granting of (i) any Lien against the
       property, assets and undertaking of the Corporation other than the
       Permitted Encumbrances described in Section (b) of the definition
       thereof, or (ii) production advances or any other disposition of any
       property, assets or undertaking of the Corporation in consideration for
       advance or accelerated payment or other manner of prepayment or payment
       not contemporaneous with delivery other than for the sales of up to
       U.S.$10,000,000 of copper concentrate pursuant to the Glencore
       Agreement.

       (aa)    ENVIRONMENTAL MATTERS.  Except as is disclosed in item 11 of
       SCHEDULE H regarding the sediment concerns at the Kemess South Mine and
       subject to the Materiality Threshold, the Corporation is not in
       violation of any applicable federal, provincial, state, municipal or
       local laws, regulations, orders, governmental decrees or ordinances with
       respect to environmental, health or safety matters (collectively,
       "Environmental Laws") and no actions, proceedings, investigations or
       other steps of any kind are in process, pending, to its Knowledge
       threatened, or reasonably foreseeable with respect to any such existing
       or past violation or alleged violation or other liability whatsoever

                                       26
<PAGE>

       on the part of the Corporation under Environmental Laws.  For greater
       certainty, subject to the same qualifications and without limiting the
       generality of the foregoing:

               (i)    the Corporation has carried on its business and at all
               times has received, handled, used, stored, treated, shipped and
               disposed at all times of all contaminants in compliance with all
               Environmental Laws;

               (ii)   there have been no releases, deposits or discharges, in
               violation of Environmental Laws, of any hazardous or toxic
               substances, materials, pollutants, contaminants or wastes into
               the earth, air or into any river, stream, lake or other body of
               water or into any municipal or other sewer or drain water
               systems;

               (iii)  no orders, directions or notices have been issued
               pursuant to any Environmental Laws relating to the business or
               assets of the Corporation; and

               (iv)   the Corporation has not failed to report to the proper
               Governmental Body the occurrence of any event which is required
               to be so reported by any Environmental Laws.

       (bb)    PLACES OF BUSINESS.  The registered office of the Corporation is
       situated at BCE Place, P.O. Box 747, Suite 2500, 181 Bay Street,
       Toronto, Ontario, Canada M5J 2T7, and the chief executive office of the
       Corporation is situated at 5501 Lakeview Drive, Kirkland, Washington,
       U.S.A. 98033.

                                       27
<PAGE>

       (cc)    ALL MATERIAL INFORMATION SUPPLIED.  The Corporation has provided
       to the Agent all material information relating to the financial
       condition, business and prospects of the Corporation and all information
       provided to the Agent is true, accurate and complete in all material
       respects and omits no material fact necessary to make such information
       not misleading provided, however, that the Corporation is not
       representing and warranting that the financial and operating projections
       made by it will accurately correspond to actual future results
       notwithstanding that they are based on the best information currently
       available to the Corporation.  For greater certainty, all documents
       provided to the Agent in the course of investigating, negotiating and
       preparing the Documents and the property, assets and affairs of the
       Corporation are complete and, subject to the proviso in the immediately
       preceding sentence, accurate in every respect and copies of all such
       documents provided to the Agent conform in every respect to the
       originals thereof.

       (dd)    DEBENTURE COVENANTS.  No event or circumstance has occurred or
       exists which is inconsistent with the covenants and agreements of the
       Corporation set out in the Debentures or which would, immediately or
       with the passage of time or giving of notice or taking of any other
       prerequisite step, constitute a Default or Event of Default thereunder.

       (ee)    SUBORDINATED NOTES.  Other than the Disclosed Defaults, the
       Corporation is in compliance with all terms and conditions and
       agreements applicable to the Subordinated Notes, and the Corporation
       will after giving effect to the transactions contemplated by this
       Agreement and the other Documents, be in compliance with all terms and
       conditions and agreements applicable to the Subordinated Notes.  The
       indebtedness under the Debentures, the Royalty Agreement and the Royalty
       Debenture will fully constitute "Permitted Indebtedness" and the
       Security and the Royalty Debenture will in each and every respect
       constitute "Permitted Liens" under the Subordinated Note Trust
       Indenture.  The Corporation has delivered to the Agent complete and
       accurate copies of all agreements and documents relating to the
       Subordinated Notes including, without limitation, the Subordinated Note
       Trust Indenture.  The Subordinated Notes will be at the Closing Date and
       thereafter remain in accordance with their terms, fully subordinated and
       postponed to the obligations of the Corporation to the Agent and the
       Lenders under the Documents, which obligations constitute "Senior
       Indebtedness" under the Subordinated Note Trust Indenture.

                                       28
<PAGE>

       (ff)    SUBSIDIARIES OF THE CORPORATION.  SCHEDULE E contains a list of
       all of the Subsidiaries of the Corporation, including the jurisdiction
       of incorporation, continuance and amalgamation for each such Subsidiary.

       (gg)    PROVINCIAL ECONOMIC ASSISTANCE.  The Province of British Columbia
       has unconditionally and irrevocably advanced to the Corporation
       approximately, Can.$154,000,000 of the previously committed economic
       assistance, compensation and investment.  All such economic assistance,
       compensation and investment is completely and accurately described in
       SCHEDULE T and the Agent has been provided with true, complete and
       accurate copies of all agreements and other documents relating thereto. 
       Except for annual payments of Can.$1,000,000 for each of the 12
       successive years commencing in 1999, as identified in SCHEDULE T, there
       are no further outstanding commitments of economic assistance,
       compensation or investment which remain to be completed and there are no
       commitments, agreements or arrangements with any Governmental Body which
       would be breached or otherwise adversely impacted by the transactions
       contemplated by the Documents or which could in any way preclude,
       hinder, prejudice or delay the exercise of the Lenders's or Agent's
       rights and remedies hereunder and thereunder.

       (hh)    WINDY CRAGGY PROPERTY.  The inability of the Corporation to incur
       expenditures on and maintain in good standing the Windy Craggy Property
       will not result in: (i) any diminution in the amounts of payments from
       the government of British Columbia pursuant to the agreement of June 27,
       1997; (ii) revocation of any permits issued by the government of British
       Columbia in connection with the Kemess Mine; or (iii) any material
       adverse effect on the ability of the Corporation to conduct mining
       operations at, and to maintain good title to, the Kemess Mine; and the
       Windy Craggy Property does not include or in any way comprise to the
       property and assets comprising the Kemess Mine.


3.2    SURVIVAL REPRESENTATIONS AND WARRANTIES BY THE CORPORATION

       The representations and warranties made by the Corporation pursuant to
Section 3.1 hereof will survive the closing of the issuance of the Debentures
and the other transactions provided for herein and, notwithstanding such closing
or any investigation made by or on behalf of the Agent or the Lenders or any
other person or any knowledge of the Agent or the Lenders or any other person,
shall continue in full force and effect for the benefit of the Agent and the
Lenders.

                                       29
<PAGE>

ARTICLE 4 - CONDITIONS

4.1    CONDITIONS TO THE OBLIGATIONS OF THE AGENT RE: THE INITIAL PURCHASE
       PRICE

       Notwithstanding anything herein contained, the obligation of the Agent
to complete the transactions provided for herein and to cause the Lenders to pay
the Initial Purchase Price will be subject to the fulfilment of the following
conditions at or prior to the Closing Time, and the Corporation covenants to use
its best efforts to ensure that such conditions are fulfilled.

       (a)     ACCURACY OF REPRESENTATIONS AND WARRANTIES AND PERFORMANCE OF
       COVENANTS.  The representations and warranties of the Corporation
       contained herein or in any other Document shall be true and accurate at
       the Closing Time.  In addition, the Corporation shall have complied with
       all covenants and agreements herein agreed to be performed or caused to
       be performed by it at or prior to the Closing Time.  At the Closing
       Time, the Corporation shall have delivered to each of the Agent and the
       Lenders certificates in form acceptable to each of the Agent and the
       Lenders confirming the facts with respect to each of the representations
       and warranties, confirming that all such covenants and agreements have
       been performed and confirming that all conditions set forth in this
       Section 4.1 have been satisfied or waived.

       (b)     DEFAULT OR EVENT OF DEFAULT.  No Default or Event of Default
       shall have occurred and be continuing nor shall there be any Default or
       Event of Default which will or will likely occur as a result of the
       transactions contemplated by this Agreement or the Documents.

       (c)     CONSENTS.  The Consents and all other consents, permits,
       agreements, confirmations and acknowledgements, determined by the Agent
       to be required or necessary to be obtained in order to effectively
       complete the transactions contemplated herein, shall have been obtained.

       (d)     LEGAL OPINIONS.  The Agent and the Lenders shall have received
       such legal opinions all in the form and content, and from counsel
       satisfactory to the Agent and the Lenders regarding the validity,
       enforceability and priority of the Documents and the Liens created
       thereby and regarding such other matters as the Agent and the Lenders
       may require to evidence compliance with the terms of the Documents and
       shall have also received any other legal opinions 

                                       30
<PAGE>

       contemplated by the Debentures.

       (e)     SECURITY DOCUMENTS.  The Lenders shall have received duly
       executed and delivered originals of the Security Documents and evidence
       satisfactory to the Agent and the Lenders of the Corporation's
       compliance with the provisions of Article 3 of the Debentures.

       (f)     PAYMENT OF FEES.  The Corporation shall have executed and
       delivered to the Agent the Royalty Agreement and the Royalty Debenture
       which shall have been registered against the Kemess South Mine and in
       all public registries where such registration is necessary or desirable
       to perfect the security interest granted in favour of the Agent, senior
       in priority to all Liens except for such Liens as may be held by holders
       of those Existing Encumbrances set out in Part 1 of SCHEDULE C1 to the
       Debenture, and the Corporation shall have paid to the Agent and the
       Lenders all fees and expenses referred to in Section 2.3, and shall have
       unconditionally waived and released, in form and content satisfactory to
       the Agent, any right to contest the reasonableness of such agreement,
       fees and expenses or otherwise challenge the entitlement of the Agent
       thereto.   Notwithstanding such payment, the Corporation will remain
       liable for any other fees and expenses referred to in Section 2.3 hereof
       which relate to the transactions hereunder but which have not been
       invoiced to, paid or incurred by the Agent or the Lenders as of the
       Closing Date.

       (g)     SUBORDINATED NOTES.  The Corporation shall have delivered to the
       Agent and the Lenders complete and accurate copies of all documents
       relating to the Subordinated Notes.  The Agent and the Lenders shall
       each have received evidence satisfactory to it that the Corporation is
       in compliance with all terms and conditions of the Subordinated Notes
       and that all necessary actions, steps and documents have been taken and
       obtained to ensure that all transactions contemplated by this Agreement
       and the other Documents (including, without limitation, the Royalty
       Agreement and the Reorganization Undertaking) do not breach or
       contravene any such terms or conditions, and have been consented to by
       the holders of the Subordinated Notes.  Each of the Agent and the
       Lenders shall also have received evidence satisfactory to it that the
       obligations of the Corporation in respect of the Subordinated Notes are
       fully subordinated and postponed to its obligations to the Agent and the
       Lenders under the Documents.  

       (h)     SENIOR SECURED DEBENTURE FACILITY.  The Corporation shall have
       delivered to the Agent and the Lenders complete and unconditional
       releases, 

                                       31
<PAGE>

       reconveyances and discharges from the lenders pursuant to the
       Senior Secured Debenture Facility of all indebtedness, liabilities and
       obligations owed by the Corporation or any Subsidiaries to such lenders
       and any and all Liens granted by the Corporation or any of its
       Subsidiaries to secure any such indebtedness, liabilities or obligations
       in exchange for payment to such lenders of an amount not to exceed the
       aggregate of the principal sum of Can.$19,500,000 and U.S.$30,700,000,
       interest thereon pursuant to and in accordance with the Senior Secured
       Debenture Facility and a prepayment amount not to exceed 1% of the
       principal amount being repaid to such lenders.

       (i)     PERFECTION OF SECURITY.  All steps necessary or desirable
       (including without limitation, the registration of the security
       interests created by the Security Documents in all public registries
       where such registration is necessary or desirable to perfect the
       security interest granted in favour of the Agent and the Lenders) shall
       have been taken to constitute the Liens under the Security as valid,
       enforceable and prior ranking to all other Liens, claims and interests
       in the Mortgaged Property except for such Liens relating to or securing
       Debt of the Corporation not in excess of Can.$10,000,000 as may be held
       by holders of those Existing Encumbrances set out in Part 1 of SCHEDULE
       C1 to the Debentures.

       (j)     GOVERNMENT CONSENTS.  The Agent and the Lenders shall have
       received consents and acknowledgements of various agencies and
       departments of the governments of British Columbia and Canada
       substantially in the form attached as SCHEDULE V.

       (k)     RECEIPT OF CLOSING DOCUMENTATION.  All documentation relating to
       the due authorization and completion of the issuance of the Debentures
       provided for herein and the due execution and delivery of all the
       Documents, and all actions and proceedings taken on or prior to Closing
       Time in connection with the performance by the Corporation of its
       obligations hereunder shall be satisfactory to the Agent and the
       Lenders, and the Agent and the Lenders shall have each received copies
       of all such documentation or other evidence as it may reasonably request
       in order to establish the consummation of the transactions contemplated
       hereby and the taking of all corporate proceedings in connection
       therewith in compliance with these conditions, in form and substance
       satisfactory to the Agent and the Lenders.

       (l)     UNDERTAKING.  The Corporation shall have executed and delivered
       to each 

                                       32
<PAGE>

        of the Agent and the Lenders:

               (i)    an undertaking (the "Reorganization Undertaking") in form
               and substance satisfactory to the Agent and the Lenders to
               forthwith, following receipt of written notice from the Agent,
               cause the Kemess Mine and all Material Contracts to be
               transferred to and assumed by a newly incorporated wholly-owned
               Subsidiary of the Corporation ("Kemess Newco"), cause Kemess
               Newco to assume and guarantee to the Lenders and the Agent all of
               the Corporation's obligations, liabilities and indebtedness under
               or pursuant to the Documents, pledge to the Lenders all of the
               Corporation's shares in the capital of Kemess Newco, provide to
               the Lenders and the Agent such additional security, agreements
               and assurances as each may reasonably request to ensure that the
               Liens in favour of the Lenders and the Agent on such assets are
               valid, enforceable and prior ranking to all other Liens, claims
               and interests in such assets except for such Liens relating to or
               securing Debt of the Corporation not in excess of Can.$10,000,000
               as may be held by holders of those Existing Encumbrances set out
               in Part I of SCHEDULE C1 to the Debentures, and obtain and
               deliver all legal opinions, consents and authorizations required
               in connection with the foregoing.  Such undertaking shall include
               a covenant that, for so long as any Event of Default exists under
               any of the Debentures, no payments or distributions will be made
               from Kemess Newco to the Corporation or any of its Associates
               except with the consent of the Lenders; and

               (ii)   such other undertakings as it may reasonably request
               regarding the taking of actions and delivery of documents
               following the Closing Time necessary or desirable to give effect
               to the terms and conditions of this Agreement and the other
               Documents.

       (m)     NO MATERIAL ADVERSE CHANGE.  There shall have been no material
       adverse change in the financial condition, business and prospects of the
       Corporation and of the Kemess Mine.

       (n)     DUE DILIGENCE.  The Agent shall have been satisfied in its
       absolute discretion with its due diligence review of the Corporation and
       its prospects including, without limitation, in connection with the
       Kemess Mine.

                                       33
<PAGE>

       (o)     TIME FRAME.  All of the conditions set out in this Section 4.1
       shall have been satisfied, each in accordance with the provisions of
       this Agreement, on or prior to April 30, 1998.

       (p)     LENDERS INTER-CREDITOR AGREEMENT.  The Lenders, the Corporation
       and APM shall have entered into an inter-creditor agreement in form and
       substance satisfactory to the Lenders. 

       (q)     PERMITTED HEDGING CREDITOR AGREEMENTS.  The Lenders, the Agent
       and the Corporation shall have entered into (i) an inter-creditor
       agreement with each of the holders of Permitted Hedging Indebtedness if
       and to the extent such holder has been granted the Permitted
       Encumbrances described in Section (b) of the definition thereof at or
       prior to the Closing Time, in form and substance satisfactory to the
       Lenders; and (ii) an agreement with each of the holders of Permitted
       Hedging Indebtedness pursuant to which such holders will agree to deal
       with such indebtedness and with any defaults of the Corporation in form
       and substance satisfactory to the Lenders.


4.2    CONDITIONS TO THE OBLIGATIONS OF THE AGENT RE: ADDITIONAL PURCHASE PRICE
PAYMENTS

       Notwithstanding anything herein contained, the obligation of the Agent
to cause the Lenders to make Additional Purchase Price Payments to the
Corporation will be subject to the fulfilment of the following conditions at or
prior to the Payment Date applicable thereto and the Corporation covenants to
use its best efforts to ensure that such conditions are fulfilled.

       (a)     SATISFACTION OF CONDITIONS SET OUT IN SECTION 4.1.  All of the
       conditions set out in Section 4.1 (other than the conditions set out in
       Section 4.1(n) and (o)) shall have been satisfied and shall remain
       satisfied, provided that the defined terms "Closing Time" or "Closing
       Date" used in any such conditions in Section 4.1 shall for the purposes
       of this Section 4.2(a) be amended to read "Payment Date".

       (b)     DEFAULT OR EVENT OF DEFAULT.  No Default or Event of Default
       shall have occurred and be continuing nor shall there be any Default or
       Event of Default which will or will likely occur as a result of the
       transactions contemplated by this Agreement or the Documents or the
       payment of the Additional Purchase Price Payments.

                                       34
<PAGE>

       (c)     PAYMENT CERTIFICATE.  The Agent and the Lenders shall have
       received two Business Days prior to the Payment Date a certificate (a
       "Payment Certificate") dated as of the applicable Payment Date, in form
       and substance satisfactory to the Agent and the Lenders:

               (i)    certifying either: (1) that there have been no amendments
               or changes to the articles and by-laws of the Corporation since
               the later of the Closing Date and the date of the last Payment
               Certificate, or (2) that attached thereto are true and correct
               copies of all amendments and/or changes to the articles and
               by-laws of the Corporation;

               (ii)   certifying either: (1) that the most recently delivered
               certificate setting forth the names of the directors and officers
               of the Corporation, including sample signatures of such directors
               and officers of the Corporation who have executed any of the
               Documents, is in full force and effect, unamended, or (2) that
               attached thereto is an amended certificate setting forth the
               names of the directors and officers of the Corporation including
               sample signatures of such directors and officers who are
               authorized to execute any Documents;

               (iii)  confirming the truth, accuracy and compliance of and with
               Sections 4.2(a) and 4.2(b) hereof and, to the extent there is any
               non-compliance and/or untruth, specifying such non-compliance
               and/or untruth;

               (iv)   setting forth the proposed use of the proceeds of the
               Additional Purchase Price Payment and specifically tying such
               payment to the cash flow statements delivered to the Lenders
               pursuant to the Debentures; and

               (v)    certifying that the Initial Purchase Price and any
               previous Additional Purchase Price Payments were used in
               accordance with and for the purposes set forth in this Agreement,
               the Debentures and any previously delivered Payment Certificates.

                                       35
<PAGE>

       (d)     NO MATERIAL ADVERSE CHANGE.  There shall have been no material
       adverse change in the financial condition, business and prospects of the
       Corporation and of the Kemess Mine.


       (e)     USE OF ADDITIONAL PURCHASE PRICE PAYMENT.  The proposed use of
       the Additional Purchase Price Payment is in accordance with the
       provisions of this Agreement, the Debentures and the cash flow statement
       delivered to the Lenders pursuant to the Debentures.


       (f)     SECURITY.  The Lenders shall be satisfied that upon and after
       making the Additional Purchase Price Payment the Liens under the
       Security are and will remain valid and enforceable and will rank senior
       in priority to all other Liens, claims and interests in the Mortgaged
       Property securing repayment of the Purchase Price for the Debentures,
       except for such Liens relating to or securing Debt of the Corporation
       not in excess of Can.$10,000,000 as may be held by holders of those
       Existing Encumbrances set out in Part 1 of SCHEDULE C1 to the
       Debentures;


       (g)     TIME FRAME.  All of the conditions set out in this Section 4.2
       shall have been satisfied, each in accordance with the provisions of
       this Agreement, on or prior to August 15, 1998.

                                       36
<PAGE>

4.3    WAIVER OR TERMINATION BY THE AGENT

       Each of the conditions contained in Section 4.1 and Section 4.2 hereof
are inserted for the exclusive benefit of the Agent and may be waived in whole
or in part by the Agent at any time.  The Corporation acknowledges that the
waiver by the Agent of any condition or any part of any condition shall
constitute a waiver only of such condition or such part of such condition, as
the case may be, and shall not constitute a waiver of any covenant, agreement,
representation or warranty made by the Corporation herein that corresponds or is
related to such condition or such part of such condition, as the case may be. 
If any of the conditions contained in Section 4.1 hereof are not fulfilled or
complied with as herein provided, the Agent may, at or prior to the Closing Time
at its option, be released from any and all of its obligations, covenants,
agreements and liabilities pursuant to this Agreement by notice in writing to
the Corporation and in such event the Agent shall be released from all of its
obligations, covenants, agreements and liabilities hereunder and, unless the
condition or conditions which have not been fulfilled are reasonably capable of
being fulfilled or caused to be fulfilled by the Corporation, then the
Corporation shall also be released from all obligations hereunder, except that
the Corporation will remain liable for the payment of all fees and expenses
referred to in Sections 2.3(a) and (c) hereof.  If any of the conditions
contained in Section 4.2 hereof are not fulfilled or complied with as herein
provided, the Agent and the Lenders shall be released from any and all of their
obligations, covenants, agreements and liabilities pursuant to this Agreement
including the obligation of the Agent to cause the Lenders to make any
Additional Purchase Price Payments.


ARTICLE 5 - CLOSING

5.1    CLOSING ARRANGEMENTS

       Subject to the terms and conditions hereof, the transactions
contemplated herein shall be closed at the Closing Time at the offices of
Goodman and Carr or at such other place or places as may be mutually agreed upon
by the Corporation and the Agent.

                                       37
<PAGE>

5.2    DOCUMENTS TO BE DELIVERED

       At or before the Closing Time, the Corporation shall execute, or cause
to be executed, and shall deliver, or cause to be delivered, to the Agent and
the Lenders all payments, documents, instruments and things which are to be
delivered by the Corporation pursuant to the provisions of this Agreement,
including the Debentures, and the Agent shall execute, or cause to be executed,
and shall deliver, or cause to be delivered, to the Corporation all payments and
all documents, instruments and things which the Agent is to deliver or to cause
to be delivered pursuant to the provisions of this Agreement.


ARTICLE 6 - GENERAL PROVISIONS

6.1    FURTHER ASSURANCES

       Each of the Corporation and the Agent hereby covenants and agrees that
at any time and from time to time after the Closing Date it will, upon the
request of the other, do, execute, acknowledge and deliver or cause to be done,
executed, acknowledged and delivered all such further acts, deeds, assignments,
transfers, conveyances and assurances as may be required for the better carrying
out and performance of all the terms of this Agreement including, without
limitation, such further and other security interests as the Agent or the
Lenders may request.


6.2    REMEDIES CUMULATIVE

       The rights and remedies of the parties under this Agreement are
cumulative and in addition to and not in substitution for any rights or remedies
provided by law.  Any single or partial exercise by any party hereto of any
right or remedy for default or breach of any term, covenant or condition of this
Agreement does not waive, alter, affect or prejudice any other right or remedy
to which such party may be lawfully entitled for the same default or breach.

                                       38

<PAGE>

6.3    INDEMNIFICATION

       The Corporation covenants and agrees that it will indemnify and hold
harmless each of the Agent and the Lenders and its members, managers,
shareholders, partners, officers, directors, employees, affiliates, consultants
and agents and their respective successors and assigns, from and after the date
of this Agreement, against any and all losses, damages, assessments, fines,
penalties, adjustments, liabilities, claims, deficiencies, costs, expenses
(including specifically, but without limitation, reasonable legal fees and
expenses and expenditures) with respect to any misrepresentation, breach of
warranty, or nonfulfillment of any agreement or covenant on the part of the
Corporation pursuant to the terms of this Agreement or any other Document or any
misrepresentation in or omission from any schedule, list, certificate, or other
instrument furnished or to be furnished by the Corporation to the Agent or the
Lenders pursuant to the terms of this Agreement or any other Document or with
respect to all actions, suits, proceedings, demands, assessments, adjustments,
costs and expenses incident to any of the foregoing or in connection with the
enforcement of rights hereunder or thereunder, regardless of whether, in the
case of a breach of a representation or a warranty, the Agent or the Lenders
relied on the truth of such representation or warranty or had any knowledge of
any breach thereof.


6.4    NOTICES

       Any notice or other communication required or permitted to be given
hereunder shall be in writing and shall be given by facsimile or other means of
electronic communication or by delivery as hereafter provided.  Any such notice
or other communication, if sent by facsimile or other means of electronic
communication, shall be deemed to have been received on the Business Day
following the sending, or, if delivered by hand, shall be deemed to have been
received at the time it is delivered to the applicable address noted below
either to the individual designated below or to an individual at such address
having apparent authority to accept deliveries on behalf of the addressee. 
Notice of change of address shall also be governed by this section.  Notices and
other communications shall be addressed as follows:

                                       39
<PAGE>

       (a)     if to the Corporation:

               Royal Oak Mines Inc.
               c/o Arctic Precious Metals, Inc.
               Royal Oak Mines (U.S.A.) Inc.
               5501 Lakeview Drive
               Kirkland, Washington
               U.S.A. 98033

               Attention:     President
               Facsimile Number:     (425) 822-3349


               with a copy to:

               Lang Michener
               BCE Place, Box 747
               2500 - 181 Bay Street
               Toronto, Ontario

               Attention: William Sheridan and David Thring
               Facsimile Number: (416) 365-1719


       (b)     if to the Agent:

               Trilon Financial Corporation  
               BCE Place
               181 Bay Street
               Suite 4420, P.O. Box 771
               Toronto, Ontario
               M5J 2T3

               Attention: Sam Pollock
               Facsimile Number: (416) 365-9642

                                       40
<PAGE>

               with a copy to:

               Goodman and Carr
               Suite 2300
               200 King Street West
               Toronto, Ontario
               M5H 3W5

               Attention:     Jeffrey Blidner and Lorne Segal
               Facsimile No.: (416) 595-0567


6.5    COUNTERPARTS

       This Agreement may be executed in several counterparts, each of which so
executed shall be deemed to be an original, and such counterparts together shall
constitute but one and the same instrument.

6.6    ANNOUNCEMENTS

       No announcement with respect to this Agreement, including any disclosure
of the identity of the Agent or the Lenders, will be made by any party hereto
without the prior approval of the other party.  The foregoing will not apply to
any announcement by any party required in order to comply with laws pertaining
to timely disclosure, provided that such party consults with the other parties
before making any such announcement.  The Corporation acknowledges and confirms
its rights and obligations under the Confidentiality Agreement entered into
between it and an affiliate of the Agent on February 19, 1998.   The Agent
confirms that it is bound by and is subject to all of the obligations and
entitled to all of the rights of such affiliate under such Confidentiality
Agreement provided that such Confidentiality Agreement is hereby amended to the
extent necessary to enable and permit the Agent to use and disclose any and all
information and documentation in its possession regarding the property, assets
and affairs of the Corporation and the Subsidiaries (i) to any of the Lenders
and (ii) for the purpose of assessing, receiving advice on, exercising,
enforcing or prosecuting its rights and remedies under the Documents or
representing in any proceedings its interests in respect thereof except that,
prior to the occurrence of a Default, the Agent may not publicly disclose
material non-public information and documentation provided to it by the
Corporation regarding hedging arrangements. 

                                       41
<PAGE>

6.7    ASSIGNMENT

       The rights and obligations of the Corporation hereunder shall not be
assignable.  Each of the Agent and the Lenders may, at its discretion, assign
its rights and obligations hereunder or under any of the Documents at any time
(including, without limitation, by the grant or conveyance of participation in
its interests hereunder).  For greater certainty and without limitation, each of
the Lenders may assign its rights in respect of any portion of the Corporation's
obligations under the Debentures, and corresponding rights under the other
Documents and/or the Agent may assign its rights in respect of any portion of
the Corporation's obligations under this Agreement, the Royalty Agreement, and
corresponding rights under the other Documents, and in such event the
Corporation will at the assignor's request execute new documentation, including
new Documents, to and in favour of the assignee substantially in the same form
and content as the assigned documentation, including the Documents.  Each of the
Agent and the Lenders may provide to any proposed assignee or participant such
information concerning the financial position and the operations of the
Corporation and its Subsidiaries as, in its opinion, may be relevant or useful
in connection with this Agreement or any other Document or any portion thereof
proposed to be acquired by such assignee or participant.  Notwithstanding
anything else in this section 6.7, if no Default or Event of Default has
occurred, neither the Agent nor the Lenders may assign this Agreement or the
Documents to any corporation whose principal business is the exploration for or
mining of precious and base metals (other than such Persons in which the Agent
or the Lenders or their respective Associates or affiliates has a direct or
indirect interest which Persons may be an assignee of this Agreement or the
Documents).  Following a Default or an Event of Default, there shall be no
restrictions on the Agent's or the Lenders' ability to assign this Agreement or
any of the Documents.


6.8    RIGHT OF FIRST OPPORTUNITY TO REFINANCE

       If the Corporation determines, at any time within a period of three
years from the date hereof, to refinance the principal amount outstanding
pursuant to the Debentures through the issuance or incurring of any indebtedness
in any manner (other than the issuance or incurring of any indebtedness that is
convertible to or exchangeable for equity of the Corporation), the Corporation
shall offer to the Agent the first right of opportunity to arrange such
financing as is required to refinance the principal amount outstanding pursuant
to the Debentures, on market terms.

                                       42
<PAGE>

6.9    SUCCESSORS AND ASSIGNS

       This Agreement shall be binding upon and enure to the benefit of the
parties hereto and their respective successors and permitted assigns.  Subject
to the last sentence of Section 6.10, nothing herein, express or implied, is
intended to confer upon any person, other than the parties hereto and their
respective successors and assigns, any rights, remedies, obligations or
liabilities under or by reason of this Agreement.


6.10   RELIANCE AND NON-MERGER

       All covenants, agreements, representations and warranties of the
Corporation made herein or in any other Document or in any certificate or other
document signed by any of its directors or officers and delivered by or on
behalf of any of them pursuant hereto or thereto are material, shall be deemed
to have been relied upon by the Agent and the Lenders notwithstanding any
investigation heretofore or hereafter made by the Agent or the Lenders, or their
respective counsel or any employee or other representative of the Agent or the
Lenders and shall survive the execution and delivery of this Agreement and the
other Documents until the Corporation shall have satisfied and performed all of
its obligations hereunder and thereunder.  Notwithstanding anything to the
contrary herein contained, the Lenders may rely upon all of the representations,
warranties, agreements, covenants and indemnities given by or on behalf of the
Corporation pursuant to this Agreement and upon all of the conditions in favour
of the Agent in this Agreement and may pursue and enforce any and all remedies
resulting from any non-compliance therewith or breach thereof notwithstanding
that the Lenders are not a party to this Agreement.  Nothing contained in this
Agreement shall operate to subordinate the Security provided in favour of the
Lenders or the Agent to or in favour of any Permitted Encumbrances or other
Liens, or to postpone any of the obligations owing by the Corporation to the
Lenders or the Agent to any of the obligations, indebtedness or liabilities owed
by the Corporation to the holders of the Permitted Encumbrances or other Liens.


6.11   JUDGMENT CURRENCY

       If for the purpose of obtaining judgment in any court, it is necessary
to convert an amount due under this Agreement or any other of the Documents or
under any instrument delivered thereunder from a currency in which it is due
(the "Original Currency") into another currency (the "Second Currency") the
parties hereto agree, to the fullest extent permitted by law, that the rate of
exchange used shall be that at which, in accordance with normal banking
procedures, the Agent could purchase the 

                                       43
<PAGE>

Original Currency with the Second Currency on the date two Business Days 
preceding that on which judgment is given.  The obligation of the Corporation 
in respect of any Original Currency due from it to the Agent or the Lenders 
under this Agreement or any other Documents or under any instrument delivered 
thereunder shall, notwithstanding any judgment in the Second Currency, be 
discharged by a payment made to the Agent or the Lenders entitled thereto on 
account thereof in the Second Currency only to the extent that, on the 
Business Day following receipt of such payment in the Second Currency, the 
Agent may, in accordance with normal banking procedures, purchase the 
Original Currency with the amount of the Second Currency so paid; and if the 
amount of the Original Currency which may be so purchased is less than the 
amount originally due in the Original Currency, the Corporation agrees as a 
separate and independent obligation and notwithstanding any such payment or 
judgment to indemnify the Agent and the Lenders against such deficiency.  


6.12   TIME OF THE ESSENCE

       Time shall be of the essence of this Agreement.


6.13   ENTIRE AGREEMENT

       This Agreement, the schedules referred to herein, and the other
Documents constitute the entire agreement between the parties hereto pertaining
to the matters therein set forth and supersede all prior agreements,
representations, warranties, statements, promises, information, arrangements and
understandings, whether oral or written, express or implied, with respect to the
subject matter thereof.  Neither party hereto shall be bound or charged with any
oral or written agreements, representations, warranties, statements, promises,
information, arrangements or understandings not specifically set forth in this
Agreement or the schedules or the other Documents.  The parties hereto further
acknowledge and agree that, in entering into this Agreement and in delivering
the schedules and the other Documents, they have not in any way relied, and will
not in any way rely, upon any oral or written agreements, representations,
warranties, statements, promises, information, arrangements or understandings,
express or implied, not specifically referenced or set forth in this Agreement
or in such schedules or other Documents.

                                       44
<PAGE>

6.14   WAIVER

       Any party hereto which is entitled to the benefits of this Agreement
may, and has the right to, waive any term or condition hereof at any time on or
prior to the Closing Time; provided, however, that such waiver shall be
evidenced by written instrument duly executed on behalf of such party and that
no waiver of any provision shall constitute a waiver of any other provision and
that no waiver will constitute a continuing waiver unless otherwise expressly
provided.


6.15   AMENDMENTS

       No modification or amendment to this Agreement may be made unless agreed
to by the parties hereto in writing.


       IN WITNESS WHEREOF, the parties hereto have duly executed this Agreement
under seal as of the day and year first above written.

                                   ROYAL OAK MINES INC.
                                   
                                   By:  /s/ James H. Wood
                                       -------------------------------
                                   Name:  James H. Wood
                                   Title:  Chief Financial Officer
                                   
                                   TRILON FINANCIAL CORPORATION
                                   
                                   By:  /s/ Sam Pollock
                                       -------------------------------
                                   Name:  Sam Pollock
                                          Managing Partner

                                   By:   /s/ Bruce Robertson
                                       -------------------------------
                                   Name:  Bruce Robertson
                                          Vice President

                                       45


<PAGE>

                 SECURITIES PURCHASE FIRST AMENDING AGREEMENT



     THIS AGREEMENT is made this 15th day of May, 1998

BETWEEN:

               ROYAL OAK MINES INC., a corporation amalgamated
               under the laws of the Province of Ontario

               (the "Corporation")

               - and -


               TRILON FINANCIAL CORPORATION,

               (the "Agent")


     WHEREAS the Corporation and the Agent entered into a Securities Purchase 
Agreement dated as of the 17th day of April, 1998 (the "Agreement);

     AND WHEREAS capitalized terms not otherwise defined herein shall have 
the meanings given them respectively in the Agreement;

     AND WHEREAS pursuant to the Agreement, the Closing Date was April 30th, 
1998 or such other date as the Agent and the Corporation may agree upon as 
the Closing Date; 

     AND WHEREAS the Corporation has requested that the Agent agree to extend 
the Closing Date to May 28, 1998, and the Agent has agreed to extend the 
Closing Date to May 28, 1998;

     AND WHEREAS pursuant to Section 2.3(a) of the Agreement, the Corporation 
acknowledged and agreed, among other things, that the Agent and the Lenders 
earned a non-refundable fee of U.S.$2,400,000 (which is payable as to 
U.S.$1,200,000 to the Agent, as to U.S.$840,000.00 to the Lenders purchasing 
Series A Debentures on a pro rata basis, and as to U.S.$360,000.00 to the 
Lenders purchasing Series B Debentures on a pro rata basis, which fee was 
payable in full on April 30, 1998;

<PAGE>

     AND WHEREAS the Corporation has agreed to pay interest to the Agent and 
the Lenders at the Interest Rate (as defined in the Debentures) on the 
U.S.$2,400,000 fee payable pursuant to Section 2.3(a) of the Agreement from 
and after April 30, 1998, on the terms and conditions hereinafter set out;

     NOW THEREFORE THIS AGREEMENT WITNESSES that in consideration of the 
mutual covenants hereinafter contained, the Agent agreeing to extend the 
Closing Date as aforesaid, the payment by each party hereto to the other 
party hereto of the sum of Can. $10 and other good and valuable 
consideration, the receipt and sufficiency of which being hereby 
acknowledged, the parties hereto agree as follows:

1.   Section 1.1(j) of the Agreement is hereby deleted and replaced with the 
following:

     "(j) "Closing Date" means May 28, 1998 or such other date as the Agent 
and the Corporation may agree upon as the Closing Date;"

2.   Section 2.3(a) of the Agreement is hereby deleted and replaced with the 
following:

     "2.3(a)(i)     The Corporation acknowledges that the Agent and Lenders 
     have earned a non-refundable fee of U.S.$2,400,000 (which is payable as 
     to U.S.$1,200,000 to the Agent, as to U.S.$840,000.00 to the Lenders 
     purchasing Series A Debentures on a pro rata basis) and as to 
     U.S.$360,000 to the Lenders purchasing Series B Debentures on a pro rata 
     basis, which was due and payable on April 30, 1998.  The Corporation 
     acknowledges and agrees that it is responsible for and will pay such fee 
     on the earlier of the Closing Date or the date of demand by the Agent 
     (provided that if the Agent makes such demand prior to the Closing Date, 
     the entire fee shall be paid directly to the Agent and not to the 
     Lenders), and even if it is the Agent who subsequently terminates its 
     obligations under this Agreement pursuant to Section 4.3 hereof; 
     provided that if such termination is as a result of the Agent expressly 
     terminating its obligations hereunder solely pursuant to and in reliance 
     on Section 4.1(n) hereof, the fee provided for in this Section 2.3(a)(i) 
     shall be reduced to U.S.$100,000 which shall thereupon be payable upon 
     demand by the Corporation to the Agent.  Any fee payable by the 
     Corporation to the Agent under this Section 2.3(a)(i) may, at the option 
     of the Agent and the Lenders, be made by the Lenders paying the amount 
     of such fees out of the Initial Purchase Price in accordance with 
     Section 2.2(a) hereof."

                                       2
<PAGE>

3.   The following is hereby added to the Agreement as new Section 2.3(a)(ii):

     "2.3(a)(ii)    The Corporation shall pay interest to the Agent at the 
     Interest Rate (as defined in the Debentures) from and after April 30, 
     1998 and before and after judgment, on the outstanding principal amount 
     of the U.S.$2,400,000 fee payable pursuant to Section 2.3(a)(ii), 
     calculated and compounded daily, which interest shall be payable by the 
     Corporation to the Agent on the earlier of the Closing Date or the date 
     of demand by the Agent.  The Corporation shall pay such interest on 
     demand without deduction or set-off, by wire transfer of immediately 
     available funds to such account and address of the Agent as may be 
     provided by the Agent from time to time."

4.   Section 4.1(o) of the Agreement is hereby deleted and replaced with the 
following:

     "(o) TIME FRAME.  All of the conditions set out in this Section 4.1 
     shall have been satisfied, each in accordance with the provisions of 
     this Agreement, on or prior to May 28, 1998."

5.   The Corporation hereby acknowledges that (i) the fee payable by the 
Corporation pursuant to Section 2.3(a)(ii) of the Agreement became due and 
payable in full to the Agent on April 30, 1998, (ii) such fee bears interest 
at the rate and upon the terms and conditions provided for in Section 
2.3(a)(ii) of the Agreement, (iii) such interest is payable on the earlier of 
the Closing Date or the date of demand by the Agent, and (iv) except as 
herein provided, neither the Agent nor the Lenders have waived or extended 
the time for payment of such fee or interest thereon. 

6    This agreement may be executed in several counterparts, each of which so 
executed shall be deemed to be an original, and such counterparts together 
shall constitute but one and the same instrument.

7.   This agreement shall be binding upon and enure to the benefit of the 
parties hereto and their respective successors and permitted assigns.  
Subject to the last sentence of Section 6.10 of the Agreement, nothing 
herein, express or implied, is intended to confer upon any person, other than 
the parties hereto and their respective successors and assigns, any rights, 
remedies, obligations or liabilities under or by reason of this agreement.

8.   Time shall be of the essence of this agreement.

                                       3
<PAGE>

9.   Subject to the provisions hereof, the parties hereto hereby ratify and 
confirm the provisions of the Agreement.

     IN WITNESS WHEREOF, the parties hereto have duly executed this agreement 
under seal as of the day and year first above written.

                                        ROYAL OAK MINES INC.

                                        By:  /s/ James H. Wood
                                            ------------------------------
                                        Name:   James H. Wood
                                        Title: Chief Financial Officer

                                        TRILON FINANCIAL CORPORATION

                                        By:  /s/ Sam Pollock
                                            ------------------------------
                                        Name:   Sam Pollock
                                                Managing Partner

                                        By:
                                            ------------------------------
                                        Name:





                                       4




<PAGE>

                SECURITIES PURCHASE SECOND AMENDING AGREEMENT


     THIS AGREEMENT is made as of the 22nd day of June, 1998

BETWEEN:


               ROYAL OAK MINES INC., a corporation 
               amalgamated under the laws of the Province 
               of Ontario

               (the "Corporation")

               - and -


               TRILON FINANCIAL CORPORATION,

               (the "Agent")



     WHEREAS the Corporation and the Agent entered into a Securities Purchase 
Agreement dated as of the 17th day of April, 1998, which agreement was 
amended by a Securities Purchase Amending Agreement made the 15th day of May, 
1998 (collectively, the "Agreement);

     AND WHEREAS capitalized terms not otherwise defined herein shall have 
the meanings given them respectively in the Agreement;

     AND WHEREAS pursuant to the Agreement, the Closing Date was May 28, 1998 
or such other date as the Agent and the Corporation may agree upon as the 
Closing Date; 

     AND WHEREAS the Corporation has requested that the Agent agree to extend 
the Closing Date to June 23rd, 1998, and the Agent has agreed to extend the 
Closing Date to June 23rd, 1998, subject to the other terms and conditions 
hereinafter set out;

     NOW THEREFORE THIS AGREEMENT WITNESSES that in consideration of the 
mutual covenants hereinafter contained, the Agent agreeing to extend the 
Closing Date as aforesaid and other good and valuable consideration, the 
receipt and sufficiency of which being hereby acknowledged, the parties 
hereto agree as follows:

<PAGE>

1.   Section 1.1(c) of the Agreement is hereby deleted in its entirety and is 
replaced with the following:

     "(c)   "Aggregate Available Purchase Price" means the difference if any 
between U.S.$120,000,000 and the amount of the Initial Purchase Price;"

2.   Section 1.1(j) of the Agreement is hereby deleted in its entirety and is 
replaced with the following:

     "(j)   "Closing Date" means June 23, 1998 or such other date as the 
Agent and the Corporation may agree upon as the Closing Date;"

3.   Section 1.1(bg) of the Agreement is hereby deleted in its entirety and 
is replaced with the following:

     "(bg)  "Subordinated Notes" means the outstanding Secured 12.75% Senior
     Subordinated  Notes due 2006 in the aggregate principal amount of
     U.S.$175,000,000;"

4.   Section 1.1(bh) of the Agreement is hereby deleted in its entirety and 
is replaced with the following:

     "(bh)  "Subordinated Note Trust Indenture" means the Trust Indenture 
     dated as of August 12, 1996 among the Corporation, Kemess Mines Inc. and 
     Mellon Bank, F.S.B. relating to the Subordinated Notes, as amended by 
     (i) the First Supplemental Indenture dated and effective as of December 
     31, 1997, (ii) the Second Supplemental Indenture dated and effective as 
     of January 31, 1998, (iii) the Third Supplemental Indenture dated and 
     effective as of May 19, 1998, (iv) the Fourth Supplemental Indenture 
     dated and effective the date hereof, and (v) the Fifth Supplemental 
     Indenture dated and effective the date hereof, each by and between the 
     Corporation and Chase Manhattan Trust Company, National Association, the 
     successor to Mellon Bank, F.S.B. as Trustee;"

5.   The following is added to Agreement as new Section 1.1(bl):

     "(bl)  "Bank Working Capital Facility" means a working capital facility 
     provided to the Corporation by the Bank of Nova Scotia pursuant to a 
     credit agreement dated February 15, 1996 as amended by agreements dated 
     August 5, 1996 and May 30, 1997 in a maximum principal amount not to 
     exceed Can. $1,900,000 pursuant to which the Bank of Nova Scotia has 
     outstanding letters of credit on behalf of the Corporation and in 
     respect of which the

                                       2
<PAGE>

     Corporation has provided to the Bank of Nova Scotia cash collateral as 
     security therefor in the approximate amount of Can. $2,012,126 as at May 
     19, 1998 plus interest thereon."

6.   Section 2.2(a) of the Agreement is hereby amended to delete reference 
therein to "U.S.$90,000,000" and to replace this reference with 
"US$115,000,000". 

7.   The first sentence of Section 2.2(b) of the Agreement is hereby deleted 
in its entirety and is replaced with the following:

     "(b)   Subject to Section 2.2(c) hereof and Section 2.2(d) hereof, the 
     Additional Purchase Price shall be paid as hereinafter set forth."

8.   Section 2.2(b) of the Agreement is hereby amended to delete any 
reference therein to "Aggregate Additional Purchase Price" and to replace 
each such reference with "Aggregate Available Purchase Price".

9.   The following is added to the Agreement as new Section 2.2(c):

     "(c)   The Corporation shall not at any time be entitled to and shall 
     not request an Additional Purchase Price Payment, and neither the 
     Lenders nor the Agent shall have any obligation to the Corporation or 
     otherwise to make an Additional Purchase Price Payment if at such time 
     or if as a result of the proposed Additional Purchase Price Payment the 
     Aggregate Available Purchase Price is or would be U.S.$5,000,000 or less 
     and if at such time Trilon Bancorp Inc. is the owner of the Proposed 
     Leaseback Assets.  If Trilon Bancorp Inc. is not the owner of the 
     Proposed Leaseback Assets as a result of a sale thereof, the provisions 
     of this Section 2.2(c) shall thereafter no longer apply."

10.  The following is added to the Agreement as new Section 2.2(d):

     "(d)   The Corporation shall not at any time be entitled to and shall 
     not request an Additional Purchase Price Payment, and neither the 
     Lenders nor the Agent shall have any obligation to the Corporation or 
     otherwise to make an Additional Purchase Price Payment if at such time 
     or if as a result of the proposed Additional Purchase Price Payment the 
     Aggregate Available Purchase Price is or would be U.S.$2,000,000 or less 
     unless at such time the Agent and the Lenders are satisfied in their 
     absolute discretion that, the Corporation has no outstanding obligations 
     or liabilities to the Bank of Nova Scotia pursuant to or in connection 
     with the Bank Working Capital Facility including any reimbursement or 
     indemnification obligations that constitute, or could constitute with 
     the passage of time, the giving of notice or the occurrence of a 
     default, "Permitted Indebtedness" as defined in and pursuant to clause 
     (v) of 

                                       3
<PAGE>

     the definition of "Permitted Indebtedness" in the Subordinated Note 
     Trust Indenture.  For the purposes of this Section 2.2(d), the 
     Corporation will be deemed to have outstanding obligations or 
     liabilities to the Bank of Nova Scotia pursuant to or in connection with 
     the Bank Working Capital Facility that constitutes Permitted 
     Indebtedness pursuant to clause (v) of the definition of "Permitted 
     Indebtedness" in the Subordinated Note Trust Indenture until such time 
     that the Corporation has delivered to the Agent and the Lenders either 
     (i) an irrevocable confirmation in writing from the Bank of Nova Scotia 
     or (ii) an opinion of counsel acceptable to the Agent and the Lenders in 
     their absolute and unfettered discretion, that in each case, the 
     Corporation's obligations and liabilities to the Bank of Nova Scotia 
     pursuant to or in connection with the Bank Working Capital Facility have 
     been paid in full and that the Corporation has outstanding no 
     obligations or liabilities to the Bank of Nova Scotia that constitute 
     Permitted Indebtedness pursuant to clause (v) of the definition of 
     "Permitted Indebtedness" in the Subordinated NoteTrust Indenture."

11.  The following is added to the Agreement as new Section 2.3(d):

"(d)   The Corporation will pay to the Lenders on the Closing Date a fee 
equal to 2% of the amount by which the Permitted Encumbrances set out in Part 
I of SCHEDULE C1 of the Debentures exceeds Can.$10,000,000 at the Closing 
Time (the "Lien Fee"); provided that no Default or Event of Default has 
occurred and is continuing and provided further that the Permitted 
Encumbrances set out in Part I of SCHEDULE C1 of the Debentures have been 
permanently reduced by the Corporation to Can.$10,000,000 or less as at 
December 31, 1998, (and the Corporation shall have provided to the Lenders 
information and particulars to this effect satisfactory to the Lenders) the 
Lenders shall refund to the Corporation on January 15, 1999 an amount equal 
to 1/2 of the Lien Fee without any interest thereon.  The Lien Fee shall be 
paid by the Corporation as to 70.8% thereof to the Lenders purchasing Series 
A Debentures and as to 29.2% thereof to the Lenders purchasing Series B 
Debentures." 

12.  Section 3.1(i) of the Agreement is hereby deleted in its entirety and is 
replaced with the following:

     "(i)  NO OBLIGATION TO ISSUE SHARES.  Except for (i) agreements, 
     options, warrants, rights and conversion or other rights granted to 
     current or former directors and employees of the Corporation in respect 
     of which no more than 10 million Common Shares of the Corporation may be 
     acquired, (ii) agreements to issue to the Corporation shares of APM 
     (which shares when issued will be subject to the Security and all share 
     certificates in respect thereof will, at the request of the Lenders, be 
     delivered to the Lenders), (iii) special warrants and common shares 
     which may be issued by the Corporation to its creditors, in lieu 

                                       4
<PAGE>

     of partial payment to such creditors, and to other Persons, and (iv) 
     10,000,000 common shares being issued to the consenting holders of the 
     Subordinated Notes, there are no agreements, options, warrants, rights 
     of conversion or other rights pursuant to which the Corporation or any 
     of the Subsidiaries is or may become obligated to issue any shares or 
     any securities convertible into, or exchangeable for, shares."

13.  Section 3.1(m) of the Agreement is hereby deleted in its entirety and is 
replaced with the following:

     "(m)   LIMITATION ON PAYMENT RESTRICTIONS.  Except for restrictions 
     contained herein, in the Senior Secured Debenture Facility and in the 
     Subordinated Note Trust Indenture, and restrictions in favour of the 
     holders of the Permitted Hedging Indebtedness to the extent such 
     restrictions herein and in the Subordinated Note Trust Indenture have 
     been agreed to and adopted by the Corporation and such holders, neither 
     the Corporation nor any Subsidiary is subject to any consensual 
     restriction on its ability (a) to pay dividends or make any other 
     distributions on its equity securities to, or pay any indebtedness owing 
     to, or repurchase or redeem any equity securities from, the holders of 
     such equity securities, the Corporation or any other Subsidiary, (b) to 
     make any loans or advances to the Corporation or any other Subsidiary, 
     or (c) to transfer any of its property or assets to the Corporation or 
     any other Subsidiary."

14.  Section 3.1(s) of the Agreement is hereby amended to delete reference 
therein to the "annual report on Form 10-K for the fiscal year ended December 
31, 1997" and to replace this reference with the "quarterly report on Form 
10-Q for the fiscal quarter ended March 31, 1998 and to delete reference 
therein to the "annual report" and to replace this reference with the 
"quarterly report".

15.  Section 3.1(u)(i) of the Agreement is hereby amended to delete reference 
therein to "Can.$10,000,000" and to replace this reference with 
"Can.$15,000,000".

16.  Section 3.1(u)(ii) of the Agreement is hereby amended to delete 
reference therein to "Can.$10,000,000" and to replace this reference with 
"Can.$15,000,000".

17.  Section 3.1(ae) of the Agreement is hereby deleted in its entirety and 
is replaced with the following:

     "(ae)  SUBORDINATED NOTES.  Other than the Disclosed Defaults, the 
     Corporation is in compliance with all terms and conditions and 
     agreements applicable to the 

                                       5
<PAGE>

     Subordinated Notes, and the Corporation will after giving effect to the 
     transactions contemplated by this Agreement and the other Documents, be 
     in compliance with all terms and conditions and agreements applicable to 
     the Subordinated Notes.  The indebtedness under the Debentures, the 
     Royalty Agreement and the Royalty Debenture will fully constitute 
     "Permitted Indebtedness" and the Security and the Royalty Debenture will 
     in each and every respect constitute "Permitted Liens" under the 
     Subordinated Note Trust Indenture.  The indebtedness under the 
     Debentures and the amounts if any from time to time outstanding on 
     account of the Royalty Agreement will constitute "Senior Indebtedness" 
     under the Subordinated Note Indenture.  The indebtedness under the 
     Debentures will constitute "Designated Senior Indebtedness" under the 
     Subordinated Note Indenture.  The indebtedness of any Subsidiary under 
     or on account of the Debentures will constitute "Guarantor Senior 
     Indebtedness" under the Subordinated Note Indenture.  The Lenders will 
     be entitled to the benefit of and can rely on the provisions of the 
     Subordinated Note Indenture relating to "Senior Indebtedness", 
     "Designated Senior Indebtedness" and "Guarantor Senior Indebtedness" and 
     the holder of the royalty pursuant to the Royalty Agreement will be 
     entitled to the benefit of and will be entitled to rely on the 
     provisions of the Subordinated Note Indenture relating to "Senior 
     Indebtedness" to the extent of the amounts if any from time to time 
     outstanding on account of the Royalty Agreement.  Each of the Lenders 
     and the holder of the royalty pursuant to the Royalty Agreement, to the 
     extent of the amounts if any from time to time outstanding on account of 
     the Royalty Agreement, will be entitled to enforce such provisions as 
     are applicable to it directly against the Corporation and any other 
     Subsidiary.  The Corporation has delivered to the Agent coplete and 
     accurate copies of all agreements and documents relating to the 
     Subordinated Notes including, without limitation, the Subordinated Note 
     Trust Indenture.  The Subordinated Notes will be at the Closing Date and 
     thereafter remain in accordance with their terms, fully subordinated and 
     postponed to the obligations of the Corporation to the Agent and the 
     Lenders under the Documents."

18.  The following is added to the Agreement as new Section 3.1(ai):

     "3.1 (ai) SCHEDULE W lists particulars, including bank, branch address, 
     account type and account number, of each bank account maintained by the 
     Corporation and by each of the Subsidiaries."

19.  Section 4.1(i) of the Agreement is hereby amended to delete reference 
therein to "Can.$10,000,000" and to replace this reference with 
"Can.$15,000,000".

20.  Section 4.1(l)(i) of the Agreement is hereby amended to delete reference 
therein to "Can.$10,000,000" and to replace this reference with 

                                       6
<PAGE>

"Can.$15,000,000".

21.  Section 4.1(o) of the Agreement is hereby deleted in its entirety and 
replaced with the following:

     "(o)   TIME FRAME.  All of the conditions set out in this Section 4.1 
     shall have been satisfied, each in accordance with the provisions of 
     this Agreement, on or prior to June 23, 1998."

22.  The following is added to the Agreement as new Section 4.1(r):

     "(r)   SUBORDINATED NOTEHOLDERS INTER-CREDITOR AGREEMENT.  The Lenders, 
     the Agent and the Corporation shall have entered into an inter-creditor 
     agreement with Chase Manhattan Trust Company, National Association as 
     trustee under the Subordinated Note Indenture and with any collateral 
     agent appointed by it if and to the extent they have been granted the 
     Permitted Encumbrances described in Section (l) of the definition 
     thereof at or prior to the Closing Time, in form and substance 
     satisfactory to the Lenders, including provisions that notwithstanding 
     the granting of such security the consenting holders of the Subordinated 
     Notes will take reasonable steps to ensure that they are placed in a 
     separate class of creditors than the Lenders in any insolvency 
     proceedings relating to the Corporation and if notwithstanding the 
     foregoing they are placed in the same class of creditors they will 
     assign their votes to the Lenders so as to permit the Lenders to vote 
     against and defeat any restructuring plan in such insolvency 
     proceedings."

23.  Section 4.2(f) of the Agreement is hereby deleted in its entirety and is 
replaced with the following:

     "(f)   SECURITY.  The Lenders shall be satisfied that upon and after 
     making the Additional Purchase Price Payment the Liens under the 
     Security are and will remain valid and enforceable and will rank senior 
     in priority to all other Liens, claims and interests in the Mortgaged 
     Property, except for such Liens relating to or securing Debt of the 
     Corporation not in excess of Can.$15,000,000 as may be held by holders 
     of those Existing Encumbrances set out in Part 1 of SCHEDULE C1 to the 
     Debentures;"

24.  The Series A Debenture attached as Schedule A-1 to the Agreement is 
hereby deleted in its entirety and is replaced with the Series A Debenture 
attached as Schedule A-1 to this agreement. 

25.  The Series B Debenture attached as Schedule A-2 to the Agreement is 
hereby deleted in its entirety and is replaced with the Series B Debenture 
attached as 

                                       7
<PAGE>

Schedule A-2 to this agreement. 

26.  The Royalty Agreement attached as Schedule C to the Agreement is hereby 
deleted in its entirety and is replaced with the Royalty Agreement attached 
as Schedule C to this agreement. 

27.  This agreement may be executed in several counterparts, each of which so 
executed shall be deemed to be an original, and such counterparts together 
shall constitute but one and the same instrument.

28.  This agreement shall be binding upon and enure to the benefit of the 
parties hereto and their respective successors and permitted assigns.  
Subject to the last sentence of Section 6.10 of the Agreement, nothing 
herein, express or implied, is intended to confer upon any person, other than 
the parties hereto and their respective successors and assigns, any rights, 
remedies, obligations or liabilities under or by reason of this agreement.

29.  Time shall be of the essence of this agreement.

30.  Subject to the provisions hereof, the parties hereto hereby ratify and 
confirm the provisions of the Agreement.

     IN WITNESS WHEREOF, the parties hereto have duly executed this agreement 
under seal as of the day and year first above written.

                                        ROYAL OAK MINES INC.

                                        By:  /s/ James H. Wood
                                           --------------------------------
                                        Name:  James H. Wood
                                        Title:  Chief Financial Officer

                                        TRILON FINANCIAL CORPORATION

                                        By:  /s/ Sam Pollock
                                           --------------------------------
                                        Name:  Sam Pollock
                                               Managing Partner

                                        By:  /s/ Bruce Robertson
                                           --------------------------------
                                        Name:  Bruce Robertson
                                               Vice President




                                       8

<PAGE>






                                 ROYAL OAK MINES INC.



- -------------------------------------------------------------------------------


                         SENIOR SECURED DEBENTURE - SERIES A


- -------------------------------------------------------------------------------


                                    JUNE 22, 1998









                           File #9801032.TRI - SENR15B.DEB

                                       LWS:wpc

                                  GOODMAN AND CARR
                                     Suite 2300
                                200 King Street West
                                  Toronto, Ontario
                                       M5H 3W5


<PAGE>


                                  TABLE OF CONTENTS
<TABLE>
<CAPTION>

ARTICLE NO.                          DESCRIPTION                                             PAGE NO.
<S>         <C>                                                                              <C>
1 - INTERPRETATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
    1.1     Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
    1.2     Use of Singular and Plural . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
    1.3     Interpretation Not Affected by Headings, etc.. . . . . . . . . . . . . . . . . . . .   1
    1.4     Monetary References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
    1.5     Day Not a Business Day . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
    1.6     Invalidity of Provisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
    1.7     References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
    1.8     Debenture to Govern. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
    1.9     Generally Accepted Accounting Principles . . . . . . . . . . . . . . . . . . . . . .   2
    1.10    Computation of Time Periods. . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
    1.11    Debentures in Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3

2 - PRINCIPAL AND INTEREST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
    2.1     Interest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
    2.2     Payment of Interest. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
    2.3     Repayment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
    2.4     Optional Prepayment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6

3 - SECURITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
    3.1     Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
    3.2     No Merger. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   8
    3.3     Further Assurances - Security. . . . . . . . . . . . . . . . . . . . . . . . . . . .   8

4 - REPRESENTATIONS AND WARRANTIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   9
    4.1     Representations and Warranties by the Corporation. . . . . . . . . . . . . . . . . .   9
    4.2     Survival of Representations and Warranties by the Corporation. . . . . . . . . . . .  20

5 - COVENANTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  21
    5.1     Affirmative Covenants. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  21
    5.2     Holder's Right to Decline to Receive Information . . . . . . . . . . . . . . . . . .  27
    5.3     Negative Covenants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  28

6 - DEFAULT AND ACCELERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  33
    6.1     Events of Default. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  33
    6.2     Acceleration on Default. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36
    6.3     Remedies Cumulative. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36
    6.4     Debenture Not Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37

7 - MISCELLANEOUS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
    7.1     Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
    7.2     Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38
    7.3     Exchange of Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
    7.4     Reliance and Non-Merger. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
    7.5     Amendment, Waiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
    7.6     No Set-Off by the Corporation. . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
    7.7     Employment of Experts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
    7.8     Further Assurances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  40
    7.9     Governing Law. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  40
    7.10    Payment of Costs and Expenses. . . . . . . . . . . . . . . . . . . . . . . . . . . .  40
    7.11    Judgment Currency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  41
    7.12    Payment Agreements for Debenture . . . . . . . . . . . . . . . . . . . . . . . . . .  41
    7.13    Entire Agreement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  42

</TABLE>



<PAGE>

                             ROYAL OAK MINES INC.

                   (Amalgamated under the laws of Ontario)

                     SENIOR SECURED DEBENTURE - SERIES A

       Royal Oak Mines Inc. (the "Corporation") for value received hereby
acknowledges itself indebted and promises to pay to or to the order of the
Holder on the Final Maturity Date, each as defined herein, or such dates as all
or any part of the principal amount hereof may become due in accordance with the
provisions hereof, the principal sum of EIGHTY-FIVE MILLION UNITED STATES
DOLLARS (U.S. $85,000,000) (or such parts thereof as may become due), on
presentation and surrender of this Debenture (in the case of payment of all of
the principal amount hereof) to the Corporation at its registered office or at
such place as the Corporation may direct, and to pay interest on the principal
amount of this Debenture outstanding from time to time at the rates and times
and in the amounts set forth herein. 


ARTICLE 1 - INTERPRETATION

1.1    DEFINITIONS

       In this Debenture, unless otherwise defined in this Debenture, the 
terms set out in SCHEDULE A shall have the meanings ascribed to them in that 
schedule.

1.2    USE OF SINGULAR AND PLURAL

       Words importing the singular include the plural and vice versa and 
words importing gender include all genders.

1.3    INTERPRETATION NOT AFFECTED BY HEADINGS, ETC.

       The division of this Debenture into Articles, Sections, subsections 
and paragraphs and the insertion of headings are for convenience of reference 
only and shall not affect the construction or interpretation of this 
Debenture.

1.4    MONETARY REFERENCES

       Any reference in this Debenture to "Canadian dollars" or "Can. $" or 
similar terms shall be deemed to be a reference to lawful money of Canada and 
any reference in this Debenture to "United States of America dollars", 
"United States dollars" or "U.S. $" or similar terms shall be deemed to be a 
reference to lawful money of the United States of America.  If no such 
references are made with respect to any particular sum or obligation, the sum 
or obligation in question shall be deemed to refer to lawful money of Canada.

<PAGE>

1.5    DAY NOT A BUSINESS DAY

       In the event that any day on or before which any action is required to 
be taken hereunder is not a Business Day, then such action shall be required 
to be taken on or before the requisite time on the first Business Day 
thereafter. 

1.6    INVALIDITY OF PROVISIONS

       Each of the provisions contained in this Debenture is distinct and 
severable and a declaration of invalidity, illegality or unenforceability of 
any such provision or part thereof by a court of competent jurisdiction shall 
not affect the validity or enforceability of any other provisions hereof or 
thereof. Without limiting the generality of the foregoing, if any amounts on 
account of interest or fees or otherwise payable by the Corporation to the 
Holder hereunder exceed the maximum amount recoverable under Applicable Law, 
the amounts so payable hereunder shall be reduced to the maximum amount 
recoverable under Applicable Law. 

1.7    REFERENCES

       Except as otherwise specifically provided, reference in this Debenture 
to any contract, agreement or any other instrument shall be deemed to include 
references to the same as varied, amended, supplemented or replaced from time 
to time and reference in this Debenture to any enactment, including without 
limitation any statute, law, by-law, regulation, ordinance or order, shall be 
deemed to include references to such enactment as re-enacted, amended or 
extended from time to time.

1.8    DEBENTURE TO GOVERN

       If there is any inconsistency between the terms of this Debenture and 
the terms of any Security Document, the provisions hereof shall prevail to 
the extent of the inconsistency, but the foregoing shall not apply to limit 
or restrict in any way the rights and remedies of the Holder under the terms 
of the Security Documents after the Liens thereby constituted shall have 
become enforceable. 

                                       2
<PAGE>

1.9    GENERALLY ACCEPTED ACCOUNTING PRINCIPLES

       Unless otherwise specifically provided herein, all accounting terms 
shall be applied and construed in accordance with Canadian generally accepted 
accounting principles consistently applied.  For the purpose of determining 
compliance with the financial covenants set forth in Section 5.1(t), all 
computations shall be calculated on a consolidated basis, where applicable, 
and shall be adjusted to eliminate the effect of any discretionary change by 
the Corporation in the application of generally accepted accounting 
principles since the date of its most recent audited consolidated financial 
statements prior to the date hereof.

1.10   COMPUTATION OF TIME PERIODS

       In this Debenture, in the computation of periods of time from a 
specified date to a later specified date, unless otherwise expressly stated, 
the word "from" means "from and including", and the words "to" and "until" 
each mean "to but excluding".

1.11   DEBENTURES IN SERIES

       The Series A Senior Secured Debentures of the Corporation (the "Series 
A Debentures") may be issued to one or more holders.  The aggregate principal 
amount of Series A Debentures which shall be issued shall be U.S. 
$85,000,000. The Corporation shall also issue Series B Senior Secured 
Debentures of the Corporation (the "Series B Debentures"), the aggregate 
principal amount of which shall be U.S. $35,000,000.

       This Debenture and all other Series A Debentures now or hereafter 
issued shall be rateably secured by a Lien on the property, assets and 
undertaking of the Corporation and shall rank pari passu inter se for payment 
(whether such payment is a payment, repayment and/or prepayment and whether 
same is voluntary or mandatory) of principal and/or interest hereunder and 
all such payments shall be made pro rata to each holder of Series A 
Debentures in accordance with the principal amount outstanding under the 
debenture held by such holder at the time of such payment.

       For as long as a Default or an Event of Default has occurred and is 
continuing, all amounts realized pursuant to the enforcement or the exercise 
of collection or other remedial action pursuant to or with respect to the 
Security for the Series A Debenture or the Security (as defined in the Series 
B Debenture) for the Series B Debenture shall be applied first to pay in full 
any and all amounts outstanding pursuant to the Series A Debenture, and shall 
not be applied to pay any or all amounts outstanding pursuant to the Series B 
Debenture unless and until all amounts outstanding pursuant to the 

                                       3
<PAGE>

Series A Debenture have been paid in full.

       At all times prior to the occurrence of a Default or an Event of 
Default, and at all times after a Default or an Event of Default which has 
occurred has been cured, provided that no other Default or Event of Default 
has occurred which is continuing, all amounts realized pursuant to the 
enforcement or the exercise of collection or other remedial action pursuant 
to or with respect to the Security for the Series A Debenture or the Security 
(as defined in the Series B Debenture) for the Series B Debenture shall be 
applied pro rata in accordance with the relative amounts outstanding under 
the Series A Debenture and the Series B Debenture at the time of such payment.

       The Holder, by its acceptance of this Debenture, agrees to be bound by 
the provisions contained herein.

1.12   REPAYMENT AMOUNT

       For the purposes of (i) the repayment and prepayment of the principal 
amounts outstanding hereunder, (ii) the payment of interest thereon and (iii) 
the payment of fees contemplated in Sections 2.3 and 2.4 hereof, the amount 
outstanding hereunder at any time shall be the aggregate of the Initial 
Purchase Price paid by the Holder, the Additional Purchase Price paid by the 
Holder if any, any and all compounded interest at such time, and such other 
fees, expenses and other amounts as may be payable by the Corporation to the 
Holder pursuant to the Documents at such time.

1.13   USE OF PROCEEDS

       The Corporation hereby covenants, agrees, represents and warrants with 
and to the  Holder that the Corporation will use the proceeds from the 
issuance and sale of Debentures:

       (a)     to repay all amounts outstanding under the Senior Secured 
       Debenture Facility (as defined in the Purchase Agreement);

       (b)     to repay those Kemess South Mine accounts payable of the 
       Corporation listed in SCHEDULE G; 

       (c)     to fund capital and non-capital expenses of the Corporation in 
       connection with the construction, development and operation of the 
       Kemess South Mine.

       In addition to the foregoing, and until the occurrence of a Default or 
Event of Default hereunder:

                                       4
<PAGE>

       (d)     the Corporation may use such proceeds for general corporate 
       purposes in an amount not to exceed the aggregate of U.S. $20,000,000; 
       and

       (e)     to the extent that the amounts referred to in Section 1.13(d) 
       hereof are insufficient to satisfy the general corporate purposes of 
       the Corporation, and provided the Proceeds Conditions have then been 
       and remain satisfied, the Corporation may then use such proceeds for 
       general corporate purposes.

ARTICLE 2 - PRINCIPAL AND INTEREST

2.1    INTEREST

       Interest shall accrue from the date hereof, before and after the 
occurrence of an Event of Default, demand, maturity or judgment, on the 
outstanding principal amount of this Debenture, and on all overdue costs, 
expenses and interest payable hereunder, at the Interest Rate and shall be 
calculated and compounded monthly on the first day of each calendar month, 
and shall be payable on the first day of the calendar month occurring after 
the earlier of (i) July 31, 1998, and (ii) the Kemess Mine Production Date, 
and thereafter shall be calculated and compounded monthly and payable monthly 
in arrears on the first calendar day of each month in each year (each an 
"Interest Payment Date") and on the Maturity Date.  Notwithstanding the 
foregoing sentence, any accrued or accruing interest hereunder shall become 
and shall be immediately due and payable in full in the event that the 
principal amount outstanding hereunder has become due and payable.

2.2    PAYMENT OF INTEREST

       Except as otherwise provided for herein, as interest on this Debenture 
becomes due (except interest payable on the Maturity Date, which shall be 
paid upon presentation and surrender of this Debenture for payment), the 
Corporation shall pay to the Holder the interest due and payable on each 
Interest Payment Date, without deduction or set-off, by wire transfer of 
immediately available funds to such account and address of the Holder as may 
be provided by the Holder from time to time. 

2.3    REPAYMENT

(a)    Subject to the terms and conditions of this Debenture including the 
provisions of Section 6.2 hereof, the principal amount of this Debenture and 
all accrued interest thereon and any other amounts payable hereunder in 
connection with this Debenture shall be repaid in full on the date that is 
two years from the date hereof (the "Final Maturity Date").

                                       5
<PAGE>

(b)    In addition to any other amounts payable by the Corporation hereunder, 
the Corporation shall pay:

       (i)     on February 15, 1999, a non-refundable fee equal to 2% of the 
               amount by which the aggregate amount then outstanding under 
               the Debentures (including principal and accrued interest and 
               unpaid fees and expenses) exceeds U.S. $80,000,000; and

       (ii)    On October 15, 1999, a non-refundable fee equal to 2% of the 
               amount by which the aggregate principal amount then 
               outstanding under the Debentures (including principal and 
               accrued interest and unpaid fees and expenses) exceeds U.S. 
               $50,000,000.

Such fees shall be payable to the holders of the Debentures pro rata and pari 
passu, in accordance with the provisions of Section 1.11.

2.4    OPTIONAL PREPAYMENT

       Subject to the terms and conditions of this Debenture and provided no 
Default or Event of Default has occurred hereunder, under any other Series A 
Debentures or under any of the Series B Debentures, the Corporation shall 
have the privilege of prepaying from time to time, on any Business Day, all 
or any part of the principal amount of this Debenture on payment to the 
Holder of the Prepayment Amount provided that:

       (a)     any such prepayment shall only be made on at least five 
       Business Days' notice to the Holder, which notice, once given, shall 
       be irrevocable and binding upon the Corporation;

       (b)     any such prepayment shall be in an amount of at least U.S. 
       $5,000,000;

       (c)     any such prepayment shall be accompanied by payment of all 
       interest, fees and other amounts accrued in respect of the principal 
       amount being so prepaid to the date of prepayments as well as all 
       other amounts due and payable under this Debenture on the date of 
       prepayment;

       (d)     each such prepayment shall be in accordance with Section 1.11; 
       and 

       (e)     no such prepayment will be permitted at any time that the 
       Permitted Encumbrances set out in Part I of SCHEDULE C1 exceeds 
       Can.$10,000,000.

                                       6
<PAGE>


2.5    SUBORDINATED NOTE TRUST INDENTURE

       The Corporation hereby designates the Debt payable hereunder by the 
Corporation to the Holder as "Designated Senior Indebtedness" pursuant to and 
in accordance with the Subordinated Note Trust Indenture.


ARTICLE 3 - SECURITY

3.1    SECURITY

       (a)     As security for the due and punctual payment of all of its 
       obligations to the Holder under or in respect of this Debenture and 
       the other Documents, the Corporation shall execute and deliver to the 
       Holder, contemporaneous with the delivery of this Debenture to the 
       Holder, valid and enforceable Liens against all present and 
       after-acquired property, undertaking and assets of the Corporation 
       except the Excluded Assets, all in form and substance satisfactory to 
       the Holder and its Counsel, including without limitation the following:

               (i)    a security debenture by the Corporation creating a 
               fixed and floating Lien on all of the Corporation's present 
               and after-acquired property and assets including, without 
               limitation, fixed and specific Liens on all property and 
               assets comprising the Kemess Mine;

               (ii)   a general security agreement by the Corporation 
               creating a Lien on all of the Corporation's present and 
               after-acquired property and assets;

               (iii)  a limited guarantee by APM of the obligations of the 
               Corporation to the Holder;

               (iv)   a general security agreement by APM creating a Lien on 
               all of APM's present and after-acquired property and assets;

               (v)    assignments of the Corporation's interests in all 
               material mining claims, concessions and leases in any way 
               relating to the Kemess Mine;

               (vi)   an assignment by the Corporation of its rights and 
               interest in the Kemess South Resources Limited Partnership;

               (vii)  if and to the extent required by the Holder, an 
               assignment (and, where required, consents to such assignment) 
               by the Corporation of its

                                       7
<PAGE>

               rights and interest in the Kemess Mine Construction Contracts;

               (viii) an assignment (and, where required, consent to such 
               assignment) by the Corporation of its rights and interest in 
               such of the Material Contracts as the Holder may designate;

               (ix)   pledges of all of the shares in the capital of APM held 
               by the Corporation; 

               (x)    a deed of moveable hypothec for use in the province of 
               Quebec; and

               (xi)   such other agreements and documents as may, in the sole 
               discretion of the Holder, be necessary or desirable to grant 
               to the Holder valid and enforceable Liens on all of the 
               property, undertaking and assets of the Corporation other than 
               the Excluded Assets. 

       Notwithstanding anything to the contrary contained in the foregoing 
       but subject always to the provisions of Section 5.1(v), the 
       Corporation shall not be obligated to register the Security against 
       any real property or mineral claims comprising:  (i) the Pamour Mine, 
       the Nighthawk Lake Mine and the mines generally known as Giant, Hope 
       Brook and Colomac; and (ii) the Corporation's currently existing 
       exploration properties not in any way relating to the Kemess Mine.

       (b)     Contemporaneous with the delivery of the Security Documents 
       contemplated by Section 3.1(a), the Corporation shall deliver to the 
       Holder legal opinions in form and content, and from legal counsel, 
       satisfactory to the Holder regarding the validity, enforceability and 
       priority of all Liens created by such Security Documents and regarding 
       such other matters as the Holder may require to evidence compliance 
       with the terms of this Debenture and the other Documents.

       (c)     The Corporation shall ensure that all of the Security 
       Documents are executed and delivered in accordance with this Article 3 
       and the Liens created thereby are perfected in all jurisdictions and 
       at all times reasonably required by the Holder. 

                                       8
<PAGE>

3.2    NO MERGER

       The Security Documents shall not merge in any other security.  No 
judgment obtained by the Holder shall in any way affect any of the provisions 
of this Debenture or any of the Security Documents.  For greater certainty, 
no judgment obtained by the Holder shall in any way affect the obligation of 
the Corporation to pay principal, fees and interest at the rates, times and 
in the manner provided in this Debenture.

3.3    FURTHER ASSURANCES - SECURITY

       From time to time following the Closing Date, the Corporation shall at 
the expense of the Corporation take such action (including, without 
limitation, the provision of information and access to property) and execute 
and deliver to the Holder such agreements, conveyances, deeds and other 
documents and instruments as the Holder shall reasonably request in 
furtherance of granting to the Holder valid and enforceable first priority 
Liens on all of the Corporation's present and after acquired property, 
undertaking and assets other than the Excluded Assets, and the Corporation 
shall at the expense of the Corporation register, file or record the same (or 
a notice or financing statement in respect thereof) in all offices where such 
registration, filing or recording is, in the opinion of the Holder, necessary 
or advisable to constitute, perfect and maintain such Liens in all 
jurisdictions reasonably required by the Holder, subject only to Permitted 
Encumbrances, provided that (subject always to the provisions of Section 
5.1(v)) the Corporation shall not be obligated to register the Security 
against any real property or mineral claims comprising:  (i) the Pamour Mine, 
the Nighthawk Lake Mine and the mines generally known as Giant, Hope Brook 
and Colomac; and (ii) the Corporation's currently existing exploration 
properties not in any way relating to the Kemess Mine.  The Corporation shall 
deliver opinions of its Counsel in respect of such matters, in each case 
within a reasonable time after the request therefor by the Holder, and in 
each case in form and substance reasonably satisfactory to the Holder.


ARTICLE 4 - REPRESENTATIONS AND WARRANTIES

4.1    REPRESENTATIONS AND WARRANTIES BY THE CORPORATION

       The Corporation hereby represents and warrants to the Holder and so 
long as this Debenture remains in effect shall be deemed to continuously 
represent and warrant as follows and acknowledges that the Holder is relying 
on such representations and warranties in connection with its purchase of the 
Debenture:

       (a)     INCORPORATION AND STATUS OF THE CORPORATION.  The Corporation 
       is the 

                                       9
<PAGE>

       successor corporation resulting from the amalgamation on December 29, 
       1997 of the former Royal Oak Mines Inc. and Kemess Mines Inc., is duly 
       amalgamated and organized under the laws of its jurisdiction of 
       incorporation, is in good standing in each jurisdiction where, by 
       reason of its business or assets, it is required to be qualified or 
       licensed and has, subject to the Materiality Threshold, all powers, 
       licenses, franchises and permits required to own its assets and carry 
       on its business as the same is presently carried on.

       (b)     POWER AND CAPACITY.  The Corporation has the corporate power 
       to enter into each of this Debenture and the other Documents and to do 
       all acts and things as are required or contemplated hereunder or 
       thereunder to be done, observed and performed by it.

       (c)     DUE AUTHORIZATION, NO CONTRAVENTION.  The entering into and 
       the performance by the Corporation of this Debenture, the other 
       Documents and the transactions contemplated herein and therein (i) 
       have been duly authorized by all necessary corporate action on the 
       part of the Corporation and (ii) do not and will not contravene, 
       violate, breach or result in any default under the articles, by-laws, 
       constating documents or other organizational documents of the 
       Corporation, or any agreement to which the Corporation is a party or, 
       subject to the Materiality Threshold, any term or provision of any 
       regulatory license or permit or any order of any court, governmental 
       authority or regulatory body or any law or regulation of any 
       jurisdiction in which the Corporation carries on its business.

       (d)     BINDING AGREEMENT.  This Debenture and the other Documents 
       have been duly executed and delivered by the Corporation and 
       constitute legal, valid and binding obligations enforceable against 
       the Corporation in accordance with their terms, subject only to the 
       availability of equitable remedies and the effect of bankruptcy, 
       insolvency and similar laws affecting the rights of creditors 
       generally.

       (e)     NO PROCEEDINGS.  As of the date of execution of this 
       Debenture, except as is disclosed in SCHEDULE H and subject to the 
       Materiality Threshold there is no material litigation, arbitration or 
       administrative proceedings, actions, suits or investigations 
       outstanding, pending or, to the Knowledge of the Corporation, 
       threatened against the Corporation or any of its properties.  None of 
       the transactions contemplated hereby or by the other Documents have 
       been enjoined by any Governmental Body and no suit or other proceeding 
       challenging the transactions contemplated hereby or by the other 
       Documents has been instituted or, to the Knowledge of the Corporation, 
       threatened, and no investigative demand on the Corporation or any 
       Subsidiary related to such transactions has been made by any 
       Governmental Body and no Governmental 

                                       10
<PAGE>

       Body or Person has, to the Knowledge of the Corporation, threatened to 
       take any such action.

       (f)     COMPLIANCE WITH APPLICABLE DOCUMENTS AND LAWS.  The 
       Corporation is not in violation of, or in default under (and there 
       does not exist any event or condition which, after notice or lapse of 
       time or both, would constitute such a default under), any term of its 
       articles, by-laws, constating documents or other organizational 
       documents, or, subject to the Materiality Threshold and other than 
       amounts owed to the holders of the Existing Encumbrances, under any 
       term of any agreement, instrument, judgment, decree, order, statute, 
       injunction, governmental regulation, rule or ordinance (including, 
       without limitation, those relating to zoning, city planning or similar 
       matters) applicable to the Corporation, or to which the Corporation is 
       bound or which may otherwise be applicable to any property of the 
       Corporation other than as is disclosed in item 11 of SCHEDULE H.

       (g)     NO CONSENTS REQUIRED.  Except as may be expressly set out in 
       SCHEDULE J hereto (the "Consents"), there are no consents, permits, 
       approvals, confirmations and acknowledgements required in order for 
       the Corporation to carry out the transactions contemplated hereby and 
       by the Documents, provided that the granting of fixed and specific 
       Liens or assignments which the Holder may request following the date 
       hereof pursuant to its right to do so hereunder or under the Documents 
       may require consents or approval of other Persons so as not to 
       constitute events of default under any agreements with such Persons.

       (h)     SHARES.  SCHEDULE E sets out the name and jurisdiction of 
       incorporation, continuance or amalgamation of the Corporation and each 
       Subsidiary, and SCHEDULE K accurately describes the respective 
       authorized and issued share capital as of the date hereof of the 
       Corporation and each Material Subsidiary.  Other than as disclosed in 
       Section 4.1(i) hereof, there are no shareholders' agreements, pooling 
       agreements, voting trusts or other similar agreements with respect to 
       the ownership or voting of any of the shares of the Corporation or of 
       Material Subsidiaries or pursuant to which any person may have any 
       right or claim in connection with any existing or past equity interest 
       in the Corporation or such Material Subsidiaries.

       (i)     NO OBLIGATION TO ISSUE SHARES.  Except for (i) agreements, 
       options, warrants, rights and conversion or other rights granted to 
       current or former directors and employees of the Corporation in 
       respect of which no more than 10 million common shares of the 
       Corporation may be acquired, (ii) agreements to issue to the 
       Corporation shares of APM (which shares when issued will be subject to 
       the Security and all share certificates in respect thereof will, at 
       the 

                                       11
<PAGE>

       request of the Holder, be delivered to the Holder), (iii) special 
       warrants and common shares which may be issued by the Corporation to 
       its creditors, in lieu of partial payment to such creditors, and to 
       other Persons, and (iv) 10,000,000 common shares being issued to the 
       consenting holders of the Subordinated Notes, there are no agreements, 
       options, warrants, rights of conversion or other rights pursuant to 
       which the Corporation or any of the Subsidiaries is or may become 
       obligated to issue any shares or any securities convertible into, or 
       exchangeable for, shares.

       (j)     FINANCIAL STATEMENTS.  The Audited Financial Statements and 
       the Interim Financial Statements have been prepared in accordance with 
       generally accepted accounting principles consistently applied (subject 
       to usual year-end adjustments in the case of the Interim Financial 
       Statements) and fairly present the financial position of the 
       Corporation and the Subsidiaries and the results of their operations 
       at the times and for the periods indicated.  The Corporation and each 
       of the Subsidiaries has no outstanding liabilities, contingent or 
       otherwise, other than those disclosed in the Audited Financial 
       Statements and the Interim Financial Statements and other than trade 
       or business obligations subsequently incurred in the ordinary course 
       of business, which such trade and business obligations are currently 
       in good standing in accordance with their respective terms, other than 
       as set forth in SCHEDULE L. 

       (k)     PERMITS, COMPLIANCE WITH LAWS.  This section 4.1(k) shall be 
       subject to the Materiality Threshold.  The Corporation has all 
       licences, permits, approvals and franchises that it requires, or is 
       required to have, to own its properties and assets and to carry on its 
       business as presently conducted including, without limitation, in 
       respect of the construction and development of the Kemess South Mine.  
       All such licences, permits, approvals and franchises are in good 
       standing and, except as is disclosed in item 11 of SCHEDULE H, no 
       actions, proceedings, investigations or other steps of any kind are in 
       process, pending, to the Knowledge of the Corporation threatened, or 
       reasonably foreseeable which might result in any such licence, permit, 
       approval or franchise being terminated, revoked, withdrawn, suspended 
       or otherwise made unavailable to the Corporation for any period of 
       time.  The Corporation has applications pending for all additional 
       licences, permits, approvals and franchises necessary or desirable for 
       the commencement of mining operations at the Kemess Mine in the manner 
       and to the full extent contemplated in plans and projections disclosed 
       to the Holder (a list of which additional licenses are attached here 
       as SCHEDULE M) and has no reason to believe that any or all such 
       additional licences, permits, approvals and franchises will not be 
       granted to prevent, impair or interfere with the Kemess Mine 
       Production Date occurring on or before December 31, 1998.  Except as 
       is disclosed in item 11 of SCHEDULE H, the Corporation is conducting 
       its business in compliance with all applicable 

                                       12
<PAGE>

       laws, regulations, by-laws and ordinances of each jurisdiction in 
       which its business is carried on, including without limitation all 
       laws, regulations, by-laws and ordinances relating to mining 
       concessions.

       (l)     NO RESTRICTIONS.  Except as may be provided for in agreements 
       between the Province of British Columbia and the Corporation 
       respecting economic assistance, copies of which have been provided to 
       the Holder, the Corporation is not a party to or bound by any 
       agreement which would restrict or limit its right to carry on any 
       business or activity or to solicit business from any Person or in any 
       geographical area or otherwise to conduct the business of the 
       Corporation.  The Corporation is not subject to any legislation or any 
       judgment, order or requirement of any court or governmental authority 
       which is not of general application to persons carrying on a business 
       similar to the business of the Corporation.

       (m)     LIMITATION ON PAYMENT RESTRICTIONS.  Except for restrictions 
       contained herein and in the Subordinated Note Trust Indenture and 
       restrictions in favour of the holders of the Permitted Hedging 
       Indebtedness to the extent such restrictions herein and in the 
       Subordinated Note Trust Indenture have been agreed to and adopted by 
       the Corporation and such holders, neither the Corporation nor any 
       Subsidiary is subject to any consensual restriction on its ability (a) 
       to pay dividends or make any other distributions on its equity 
       securities to, or pay any indebtedness owing to, or repurchase or 
       redeem any equity securities from, the holders of such equity 
       securities, the Corporation or any other Subsidiary, (b) to make any 
       loans or advances to the Corporation or any other Subsidiary, or (c) 
       to transfer any of its property or assets to the Corporation or any 
       other Subsidiary.

       (n)     NO MATERIAL ADVERSE CHANGES, DAMAGE OR ACCIDENTS.  Since June 
       1, 1998, the Corporation has operated its business diligently and only 
       in the ordinary course of business and except for the defaults set out 
       in SCHEDULE I (the "Disclosed Defaults"), (which Disclosed Defaults 
       have been remedied), and except for the Corporation committing events 
       of default pursuant to the Subordinated Note Trust Indenture (which 
       have since been cured), there has not been any material adverse change 
       in the condition (financial or otherwise), assets, liabilities, 
       affairs, business or operations of the Corporation, any substantial 
       loss of or damage to the assets of the Corporation, or any accident 
       (subject to the Materiality Threshold) relating to the mines, 
       properties or mining operations of the Corporation in which any 
       employee of the Corporation was injured.  For greater certainty, since 
       June 1, 1998 the Corporation has not:

               (i)    incurred any liabilities other than in the ordinary 
               course of business consistent with past practice;

                                       13
<PAGE>

               (ii)   sold, encumbered, assigned or transferred any assets or
               properties of the Corporation, other than for fair market value,
               to purchasers at arms length to the Corporation and in the
               ordinary course of business consistent with past practice;

               (iii)  created, incurred, assumed or guaranteed any obligations,
               liabilities or indebtedness except in the ordinary course of
               business consistent with past practice or subjected any of its 
               assets to any Lien except for Existing Encumbrances;

               (iv)   changed or amended its governing documents in any
               respect;

               (v)    declared, set aside, paid or made any distributions in
               cash or property on its equity securities including its common
               shares;

               (vi)   directly or indirectly redeemed, purchased or otherwise
               acquired any of its equity securities;

               (vii)  other than the resignations of John May, Matthew
               Gaasenbeek, Michael Lalonde, Nancy Deshaw and Scott Lampe,
               suffered any resignation or termination of employment of any key
               officers or directors or become aware of any impending
               resignation or termination of employment of any such key officers
               or directors;

               (viii) except in the ordinary course of its business, or as
               disclosed in writing to the Holder prior to the date hereof,
               materially increased the compensation payable or to become
               payable to any of its officers or directors or materially
               increased any bonus, insurance, pension or other employee benefit
               plan, payment or arrangement made for or with any such officers
               or directors;

               (ix)   materially changed its accounting methods, principles or
               practices; or

               (x)    entered into any agreement or commitment to do any of the
               things described in this section.

       (o)     NO WORK ORDERS.  Except as is disclosed in item 11 of SCHEDULE H
       and subject to the Materiality Threshold, no work orders, directions or
       notices have been issued pursuant to any applicable law relating to the
       business of the Corporation or any part of the Mortgaged Property or
       relating to or pursuant to any environmental matters affecting the 
       foregoing and the Corporation has not

                                       14
<PAGE>

       received any notification from any Governmental Body that any work, 
       repairs, construction or capital expenditures are required to be made 
       in respect of the Mortgaged Property or any part thereof as a 
       condition of continued compliance with any applicable law or any 
       Material Authorizations issued thereunder.

       (p)     NO DEFAULT.  Subject to the Materiality Threshold, the 
       Corporation is not in default or breach under any material commitment 
       or obligation under the terms and conditions relating to any Material 
       Authorizations and there exists no state of facts which, after notice 
       or the passage of time or both, would constitute such a default or 
       breach and there are no proceedings in progress, pending or, to the 
       Knowledge of the Corporation, threatened which may result in the 
       revocation, cancellation, suspension, non-grant or any adverse 
       modification of any Material Authorization except as is disclosed in 
       item 11 of SCHEDULE H. The Corporation has obtained all Material 
       Authorizations necessary or desirable to carry on all activities 
       currently and previously carried on at the Kemess Mine.

       (q)     NON-ARM'S LENGTH TRANSACTIONS.  Except as is described in
       employment agreements and correspondence delivered to the Holder prior
       to the date hereof, the Corporation is not a party to any contract,
       commitment or transaction (including by way of loan) with any officer,
       director or shareholder of the Corporation, any of the Subsidiaries, or
       any of their respective affiliates or associates, other than as
       disclosed in the Audited Financial Statements and the Interim Financial
       Statements and other than employment contracts in the ordinary course of
       business.

       (r)     TAX MATTERS.

               (i)    The Corporation has prepared and filed on a timely basis
               with all appropriate Governmental Bodies all returns with respect
               to Taxes and other documents that it is required to file in
               respect of any Taxes for all fiscal periods ending on or prior to
               the date hereof and all such returns or other documents are
               correct and complete in all material respects;

               (ii)   The Corporation has paid in full all Taxes due on or
               before the date hereof and, in the case of Taxes accruing on or
               before the date hereof that are not due on or before the date
               hereof, the Corporation will have made adequate provision in its
               books and records and financial statements for such payment; and
               the Corporation does not have any liability for Taxes other than
               those provided for in the Audited Financial Statements and the
               Interim Financial Statements and those arising subsequently in
               the ordinary course of the operation of its business;

                                       15
<PAGE>

               (iii)  The Corporation has withheld from each payment made to
               any of its present or former employees, officers, directors and
               to all persons who are non-residents of the applicable
               jurisdictions all amounts required pursuant to Applicable Law to
               be withheld or remitted and will continue to do so until the
               Maturity Date and furthermore has remitted such amounts within
               the applicable periods to the appropriate Governmental Body; the
               Corporation has remitted all Canada Pension Plan contributions,
               unemployment insurance premiums, employer health taxes and other
               Taxes payable by it in respect of its employees and has or will
               have remitted such amounts to the appropriate Governmental Body
               within the time required under the applicable legislation; and
               the Corporation has charged, collected and remitted on a timely
               basis all Taxes as required under applicable legislation on any
               sale, supply, or delivery whatsoever, made by the Corporation;

               (iv)   Except for a disputed assessment of fuel taxes payable by
               the Corporation to the government of Canada in the approximate
               amount of Can. $100,000, there are no reassessments of the
               Corporation with respect to Taxes that have been issued and are
               outstanding; no Governmental Body has challenged, disputed or
               questioned the Corporation in respect of Taxes or in respect of
               any returns, filings or other reports filed under any statute
               providing for Taxes; the Corporation has not received any
               indication from any Governmental Body that an assessment or a
               reassessment in respect of the Corporation is proposed; and the
               Corporation has not executed or filed any agreement extending the
               period for assessment, reassessment or collection of any Taxes.

       (s)     NO ENCUMBRANCES.  The Corporation owns and has good and
       marketable title, free and clear of all Liens except Existing
       Encumbrances, to all assets used in connection with its business
       including, without limitation, all assets reflected on the balance sheet
       included in the Audited Financial Statements and the Interim Financial
       Statements or acquired by it after the date of such balance sheet except
       for changes in such assets in the ordinary course of business subsequent
       to that date.  All material operating facilities, equipment and other
       material items of tangible property and assets owned by the Corporation
       are in good operating condition and repair, subject to normal wear and
       maintenance and having regard to their respective ages, are usable in
       the regular and ordinary course of business and conform to all
       Applicable Laws relating to their construction, use and operation,
       except where such failure, individually or in the aggregate, would not
       have a material adverse effect on the Corporation.  The Corporation's
       quarterly report on Form 10-Q for the

                                       16
<PAGE>

       fiscal quarter ended March 31, 1998 filed with the United States 
       Securities And Exchange Commission pursuant to the Securities 
       Exchange Act of 1934, as amended, contains a complete and accurate 
       description of all material property and assets owned by the 
       Corporation.  SCHEDULE N contains a complete and accurate description
       of all material property and assets owned by the Corporation
       relating to the Kemess Mine.  Subject to the Materiality Threshold, all
       equipment or other tangible assets or property situated on the premises
       of the Corporation, or necessary to the operation of the business of the
       Corporation, which is leased under a capital lease or under a material
       operating lease is listed in SCHEDULE O.  Subject to the Materiality
       Threshold, the Corporation is in compliance with all terms of agreements
       and arrangements governing the leased items listed in SCHEDULE O.

       (t)     MATERIAL INDEBTEDNESS.  SCHEDULE P contains a list of all
       material indebtedness of the Corporation in excess of Can. $1,000,000
       and the identity of the Persons to whom it is owed.  The accounts
       payable of the Corporation listed in SCHEDULE G relate only to the
       construction, development and operation of the Kemess South Mine.

       (u)     SECURITY DOCUMENTS.  The Security Documents and the other
       Documents create a valid and enforceable security interest and Lien upon
       the Mortgaged Property securing the payment and satisfaction of all
       obligations of the Corporation and APM to the Holder.  Such security
       interests are perfected security interests subject to no prior Liens or
       Liens ranking senior in priority to the Liens in favour of the Holder,
       except for such Liens (i) granted pursuant to the Royalty Debenture, and
       (ii) relating to or securing Debt of the Corporation not in excess of
       Can. $15,000,000 as may be held by holders of Existing Encumbrances set
       out in Part I of SCHEDULE C1.

       (v)     EMPLOYMENT MATTERS.  Except as is disclosed in SCHEDULE Q, the
       Corporation is not a party to or is not bound by any:

               (i)    written contract or commitment for the employment of any
               employee or officer providing for an annual salary (including
               benefits) of in excess of Can. $200,000 or a payment on
               termination of in excess of six months salary and benefits;

               (ii)   oral contract or commitment for the employment of any
               employee or officer, except for contracts of indefinite hire
               terminable by the Corporation without cause on reasonable notice;

               (iii)  in the case of the Kemess Mine only, contract with or
               commitment to any trade union, council of trade unions, employee

                                       17
<PAGE>

               bargaining agent or affiliated bargaining agent (collectively
               called "labour representatives") and the Corporation has not
               conducted negotiations with respect to any such future contracts
               or commitments; no labour representatives hold bargaining rights
               with respect to any employees of the Corporation relating to the
               Kemess Mine; no labour representatives have applied to have the
               Corporation declared a related employer pursuant to the
               applicable labour legislation; and, to the Knowledge of the
               Corporation, there are no current or threatened attempts to
               organize or establish any trade union or employee association
               with respect to the Kemess Mine project provided, however, that
               the Corporation anticipates that steps may be taken by its
               employees to unionize and negotiate collective bargaining
               agreements for the Kemess Mine at some time in the future; or

               (iv)   except as is disclosed in financial information made
               available to the Holder prior to the date hereof and subject to
               the Materiality Threshold, bonus, pension, multi-employer, profit
               sharing, deferred compensation, retirement, disability, health
               insurance or similar benefit plan, with respect to any of its
               employees or others (including without limitation any agreements
               in respect of employee share ownership plans), other than Canada
               Pension Plan, the Ontario Health Insurance Plan and other similar
               health plans established and administered by any other
               governmental authority or workers' compensation insurance
               provided pursuant to statute.

       Subject to the Materiality Threshold, there is no work stoppage or other
       concerted action, grievance or dispute existing or, to the Knowledge of
       the Corporation, threatened against the Corporation, and there is no
       material complaint, grievance, claim, work order or investigation that
       has been filed, made, commenced or, to the Knowledge of the Corporation,
       threatened against the Corporation pursuant to any human rights,
       occupational health and safety, workers compensation, employment
       standards or pay equity legislation or any similar legislation of any
       jurisdiction in which the Corporation carries on its business.

       (w)     INTELLECTUAL PROPERTY.  The Corporation owns and has good and
       marketable title, free and clear of all Liens except Existing
       Encumbrances, to the Intellectual Property.  The conduct of the business
       of, and the use of the Intellectual Property by the Corporation does not
       infringe, and the Corporation has not received any notice, complaint,
       threat or claim alleging infringement of, any patent, trade mark, trade
       name, copyright, industrial design, trade secret or other propriety
       right of any other Person.  To the Knowledge of the Corporation, the
       Intellectual Property which is not owned by the Corporation is

                                       18
<PAGE>

       being used with the consent of, and in accordance with the consent or 
       licence from, the rightful owner thereof.  The Corporation has taken all
       necessary steps to establish, preserve and protect its rights in the
       Intellectual Property which is material to the Corporation.

       (x)     MATERIAL CONTRACTS.  SCHEDULE R contains a list of all agreements
       of the Corporation which are material to the Kemess Mine and which have
       not been fully performed by the parties thereto, including, without
       limitation, agreements which relate to construction underway or proposed
       at the Kemess Mine and including, without limitation, royalty, refining
       and shipping agreements (the "Material Contracts").  SCHEDULE Z contains
       a list of all material agreements of the Corporation relating to the
       construction or development of the Kemess Mine or relating to the supply
       of equipment to the Kemess Mine, which agreements have been performed by
       the parties thereto but the warranty periods in respect of which have
       not yet expired (the "Kemess Mine Construction Contracts").  Subject to
       the Materiality Threshold, and other than amounts owed to holders of the
       Existing Encumbrances, each of the Material Contracts and the Kemess
       Mine Construction Contracts is in full force and effect without
       amendment, and there has been no default under any of them, or under any
       other material commitment or obligation, by the Corporation or, to the
       Knowledge of the Corporation, any other party, nor has any event
       occurred that, with the giving of notice, lapse of time or any other
       condition subsequent, would constitute a default or would otherwise
       allow the termination of any Material Contract or Kemess Mine
       Construction Contract.

       (y)     MINING CONCESSIONS.  SCHEDULES B-1 AND B-2 contain a complete and
       accurate list of all material mining claims, concessions and leases in
       which the Corporation has an interest relating in any way to the Kemess
       Mine, including, without limitation, all mining claims, concessions and
       leases in respect of which the Corporation has any obligation to
       contribute funds or make payments, other than fees or taxes payable in
       the ordinary course under the regulations governing such claims,
       concessions or leases.  The Corporation is the absolute beneficial owner
       of, and has good and marketable title to, such mining claims,
       concessions and leases in accordance with governing laws and
       regulations, free of all Liens except for such rights as may be held by
       Kemess South Resources Limited Partnership as disclosed in item (a) of
       Part II of SCHEDULE C1 to this Debenture and by the holders of the
       Existing Encumbrances.

       (z)     PRICING, HEDGING PROTECTION.  Subject to the Materiality
       Threshold, SCHEDULE S contains a complete and accurate list and
       description of all hedging or related arrangements to which the
       Corporation is a party or by which it is bound including, without
       limitation, forward sale contracts, options, interest

                                       19
<PAGE>

       rate swap agreements, currency swap agreements, derivative agreements and
       similar arrangements.  None of the hedging or related arrangements 
       entered into by the Corporation provides for the granting of (i) any Lien
       against the property, assets and undertaking of the Corporation other 
       than the Permitted Encumbrances described in Section (b) of the 
       definition thereof, or (ii) production advances or any other disposition 
       of any property, assets or undertaking of the Corporation in 
       consideration for advance or accelerated payment or other manner of 
       prepayment or payment not contemporaneous with delivery other than for
       the sales of up to U.S. $10,000,000 of copper concentrate pursuant to 
       the Glencore Agreement.

       (aa)    ENVIRONMENTAL MATTERS.  Except as is disclosed in item 11 of
       SCHEDULE H regarding the sediment concerns at the Kemess South Mine and
       subject to the Materiality Threshold, the Corporation is not in
       violation of any applicable federal, provincial, state, municipal or
       local laws, regulations, orders, governmental decrees or ordinances with
       respect to environmental, health or safety matters (collectively,
       "Environmental Laws") and no actions, proceedings, investigations or
       other steps of any kind are in process, pending, to its Knowledge
       threatened, or reasonably foreseeable with respect to any such existing
       or past violation or alleged violation or other liability whatsoever on
       the part of the Corporation under Environmental Laws.  For greater
       certainty, subject to the same qualifications and without limiting the
       generality of the foregoing:

               (i)    the Corporation has carried on its business and at all
               times has received, handled, used, stored, treated, shipped and
               disposed at all times of all contaminants in compliance with all
               Environmental Laws;

               (ii)   there have been no releases, deposits or discharges, in
               violation of Environmental Laws, of any hazardous or toxic
               substances, materials, pollutants, contaminants or wastes into
               the earth, air or into any river, stream, lake or other body of
               water or into any municipal or other sewer or drain water
               systems;

               (iii)  no orders, directions or notices have been issued
               pursuant to any Environmental Laws relating to the business or
               assets of the Corporation; and

               (iv)   the Corporation has not failed to report to the proper
               Governmental Body the occurrence of any event which is required
               to be so reported by any Environmental Laws.

       (bb)    PLACES OF BUSINESS.  The registered office of the Corporation is
       situated

                                       20
<PAGE>

       at BCE Place, P.O. Box 747, Suite 2500, 181 Bay Street,
       Toronto, Ontario, Canada M5J 2T7, and the chief executive office of the
       Corporation is situated at 5501 Lakeview Drive, Kirkland, Washington,
       U.S.A. 98033.

       (cc)    ALL MATERIAL INFORMATION SUPPLIED.  The Corporation has provided
       to the Holder all material information relating to the financial
       condition, business and prospects of the Corporation and all information
       provided to the Holder is true, accurate and complete in all material
       respects and omits no material fact necessary to make such information
       not misleading provided, however, that the Corporation is not
       representing and warranting that the financial and operating projections
       made by it will accurately correspond to actual future results
       notwithstanding that they are based on the best information currently
       available to the Corporation.  For greater certainty, all documents
       provided to the Holder in the course of investigating, negotiating and
       preparing the Documents and the property, assets and affairs of the
       Corporation are complete and, subject to the proviso in the immediately
       preceding sentence, accurate in every respect and copies of all such
       documents provided to the Holder conform in every respect to the
       originals thereof.

       (dd)    DEBENTURE COVENANTS.  No event or circumstance has occurred or
       exists which is inconsistent with the covenants and agreements of the
       Corporation set out in this Debenture or which would, immediately or
       with the passage of time or giving of notice or taking of any other
       prerequisite step, constitute a Default or Event of Default hereunder.

       (ee)    SUBORDINATED NOTES.  The Corporation is, and will after giving
       effect to the transactions contemplated by this Debenture and the other
       Documents be, in compliance with all terms and conditions and agreements
       applicable to the Subordinated Notes.  The indebtedness under the
       Debenture will fully constitute "Permitted Indebtedness" and the
       Security will in every respect constitute "Permitted Liens" under the
       Subordinated Note Trust Indenture.  The indebtedness under the
       Debentures and the amounts if any from time to time outstanding on
       account of the Royalty Agreement constitute "Senior Indebtedness" under
       the Subordinated Note Indenture.  The indebtedness under the Debentures
       constitute "Designated Senior Indebtedness" under the Subordinated Note
       Indenture.  The indebtedness of any Subsidiary under or on account of
       the Debentures constitute "Guarantor Senior Indebtedness" under the
       Subordinated Note Indenture.  The Lender is entitled to the benefit of
       and can rely on the provisions of the Subordinated Note Indenture
       relating to "Senior Indebtedness", "Designated Senior Indebtedness" and
       "Guarantor Senior Indebtedness" and the holder of the royalty pursuant
       to the Royalty Agreement is entitled to the benefit of and can rely on
       the provisions of the Subordinated Note Indenture relating to "Senior
       Indebtedness" to the extent of

                                       21
<PAGE>

       the amounts if any from time to time outstanding on account of the 
       Royalty Agreement.  Each of the Lenders and the holder of the royalty 
       pursuant to the Royalty Agreement, to the extent of the amounts if any 
       from time to time outstanding on account of the Royalty Agreement, can 
       enforce such provisions as are applicable to it directly against the 
       Corporation and any other Subsidiary.  The Corporation has delivered 
       to the Holder complete and accurate copies of all agreements and 
       documents relating to the Subordinated Notes including, without 
       limitation, the Subordinated Note Trust Indenture. The Subordinated 
       Notes are, in accordance with their terms, fully subordinated and 
       postponed to the obligations of the Corpoation to the Holder under the 
       Documents, which obligations constitute "Senior Indebtedness" under 
       the Subordinated Note Trust Indenture.

       (ff)    SUBSIDIARIES OF THE CORPORATION.  SCHEDULE E contains a list of
       all of the Subsidiaries of the Corporation, including the jurisdiction
       of incorporation, continuance and amalgamation for each such Subsidiary.

       (gg)    PROVINCIAL ECONOMIC ASSISTANCE.  The Province of British Columbia
       has unconditionally and irrevocably advanced to the Corporation
       approximately Can. $154,000,000 of the previously committed economic
       assistance, compensation and investment.  All such economic assistance,
       compensation and investment is completely and accurately described in
       SCHEDULE T and the Holder has been provided with true, complete and
       accurate copies of all agreements and other documents relating thereto. 
       Except for annual payments of Can. $1,000,000 for each of the 12
       successive years commencing in 1999, both as identified in SCHEDULE T,
       there are no further outstanding commitments of economic assistance,
       compensation or investment which remain to be completed and there are no
       commitments, agreements or arrangements with any Governmental Body which
       would be breached or otherwise adversely impacted by the transactions
       contemplated by the Documents or which could in any way preclude,
       hinder, prejudice or delay the exercise of the Holder's rights and
       remedies hereunder and thereunder.

       (hh)    WINDY CRAGGY PROPERTY.  The inability of the Corporation to incur
       expenditures on and maintain in good standing the Windy Craggy Property
       will not result in: (i) any diminution in the amounts of payments from
       the government of British Columbia pursuant to the agreement of June 27,
       1997; (ii) revocation of any permits issued by the government of British
       Columbia in connection with the Kemess Mine; or (iii) any material
       adverse effect on the ability of the Corporation to conduct mining
       operations at, and to maintain good title to, the Kemess Mine; and the
       Windy Craggy Property does not include or in any way comprise the
       property and assets comprising the Kemess Mine.

                                       22
<PAGE>

       (ii)    BANKS.  SCHEDULE T1 lists particulars, including bank, branch
       address, account type and account number, of each bank account
       maintained by the Corporation and by each of the Subsidiaries.

4.2    SURVIVAL OF REPRESENTATIONS AND WARRANTIES BY THE CORPORATION

       The representations and warranties made by the Corporation pursuant to
Section 4.1 hereof will survive the closing of the issuance of this Debenture
and the other transactions provided for herein and, notwithstanding such closing
or any investigation made by or on behalf of the Holder or any other person or
any knowledge of the Holder or any other person, shall continue in full force
and effect for the benefit of the Holder.


ARTICLE 5 - COVENANTS

5.1    AFFIRMATIVE COVENANTS

       So long as the Debenture or any obligation of the Corporation to the
Holder under the Debenture or any other Document remains outstanding, the
Corporation covenants and agrees with the Holder that:

       (a)     PUNCTUAL PAYMENT AND PERFORMANCE OF DEBENTURE.  The Corporation
       shall pay or cause to be paid all amounts payable to the Holder
       hereunder and under the other Documents on the dates and in the manner
       specified therein and the Corporation shall perform and carry out all of
       the acts or things to be done by the Corporation as provided in the
       Debenture and the other Documents;

       (b)     CONDUCT OF BUSINESS.  The Corporation shall do or cause to be
       done all things necessary to maintain its corporate existence in its
       present jurisdiction of incorporation and to maintain its corporate
       power and capacity to own its properties and assets;

       (c)     PRESERVATION OF MATERIAL AUTHORIZATIONS.  The Corporation and
       each Material Subsidiary shall preserve and maintain all Material
       Authorizations including, without limitation, all licenses, permits,
       approvals and franchises necessary or desirable to carry on mining
       operations at the Kemess Mine in the manner and to the full extent
       contemplated in plans and projections disclosed to the Holder.

       (d)     PRESERVATION OF MINING CLAIMS, CONCESSIONS AND LEASES.  The
       Corporation shall preserve and maintain:  (i) all mining claims subject
       to the 
                                       23
<PAGE>

       Materiality Threshold, and all concessions and leases necessary
       or desirable to carry on mining operations at the Kemess Mine in the
       manner and to the full extent contemplated in plans and projections
       disclosed to the Holder, and (ii) subject to the Materiality Threshold,
       all other material mining claims, concessions and leases.

       (e)     COMPLIANCE WITH APPLICABLE LAW AND CONTRACTS.  The Corporation
       and each Material Subsidiary shall comply with:  (i) the requirements of
       all Applicable Laws; (ii) all obligations which, if contravened, could
       give rise to a Lien (other than Permitted Encumbrances) over any of its
       property; and (iii) all insurance policies and all contracts to which
       the Corporation or such Material Subsidiary is a party or by which it or
       its properties are bound, non-compliance with which would, singly or in
       the aggregate, have a material adverse effect upon the business,
       property or financial condition of the Corporation or such Material
       Subsidiary or upon its ability to perform its obligations under this
       Debenture or any of the other Documents;

       (f)     INSURANCE.  The Corporation and each Material Subsidiary shall:

               (i)    keep its properties and assets insured with reputable
               insurers, in amounts not less than the replacement cost thereof
               and against such losses as are insured against by comparable
               corporations engaged in comparable businesses or which the Holder
               may reasonably require including without limitation, if requested
               by the Holder acting reasonably, sudden and accidental pollution
               liability insurance;

               (ii)   maintain public liability insurance in such amounts and
               against such risks as is normally carried by comparable
               corporations engaged in comparable businesses or which the Holder
               may reasonably require;

               (iii)  provide the Holder with certificates for all insurance
               policies; and 

               (iv)   provide that any loss under all such insurance policies
               (other than policies in respect of third party liability and
               business interruption insurance) in excess of Can. $500,000 shall
               be payable to the Holder subject only to any prior rights which
               may be specifically held in such proceeds by the holders of
               Permitted Encumbrances, provided that if a Default or Event of
               Default has not occurred, the Corporation or such Material
               Subsidiary shall, provided prior notice thereof shall have been
               given to the Holder, be entitled to receive such loss payment
               directly if the entire amount thereof is:   

                      (A)     used to repair or replace the lost or damaged
                      property in 


                                       24
<PAGE>

                      question if the lost or damaged property relates to the 
                      Kemess Mine; or

                      (B)     if the lost or damaged property does not in any
                      way relate to the Kemess Mine either (x) used to repair
                      or replace the lost or damaged property in question or
                      (y) after applying such loss payment or a portion thereof
                      to the reasonable costs of any required remediation of
                      the lost or damaged property, used and distributed as the
                      proceeds of a "Sale" pursuant to and in accordance with
                      Section 5.3(e) hereof;

       (g)     ACCOUNTING METHODS AND FINANCIAL RECORDS.  The Corporation shall,
       and shall cause each of its Subsidiaries to, maintain a system of
       accounting which is established and administered in accordance with
       generally accepted accounting principles and keep adequate records and
       books of account in which accurate and complete entries shall be made in
       accordance with such accounting principles reflecting all transactions
       required to be reflected by such accounting principles; 

       (h)     MAINTENANCE OF MORTGAGED PROPERTY.  The Corporation shall
       maintain the Mortgaged Property comprising the Kemess Mine and all other
       Mortgaged Property used by the Corporation or a Material Subsidiary from
       time to time in good repair, working order and condition (reasonable
       wear and tear excepted) and from time to time make or cause to be made
       all necessary and appropriate repairs, renewals, replacements, additions
       and improvements thereto;

       (i)     PAYMENT OF TAXES AND CLAIMS.  The Corporation and each Material
       Subsidiary shall:

               (i)    pay and discharge all lawful claims for labour, material
               and supplies;

               (ii)   pay and discharge all Taxes payable by it; 

               (iii)  withhold and collect all Taxes required to be withheld
               and collected by it and remit such Taxes to the appropriate
               Government Body at the time and in the manner required; and 

               (iv)   pay and discharge all obligations incidental to any trust
               imposed upon it by statute which, if unpaid, might become a Lien
               upon any of the Mortgaged Property; 

       (j)     INSPECTIONS.  The Corporation and each Material Subsidiary shall
       permit 
                                       25
<PAGE>

       the Holder and its authorized employees, representatives and
       agents to:  (i) visit and inspect its properties during normal business
       hours, (ii) inspect and make extracts from and copies of its books and
       records, and (iii) discuss with its senior management its businesses,
       property, financial condition and prospects, all on a reasonable basis
       and frequency;

       (k)     NOTICE OF LITIGATION AND OTHER MATTERS.  The Corporation shall,
       as soon as practicable after it shall become aware of the same, give
       notice to the Holder of the following events:

               (i)    the commencement or threat of a material nature of any
               action, proceeding, arbitration or investigation against or in
               any other way relating adversely to the Corporation or the
               Subsidiaries or any of their respective properties, assets or
               businesses which, if adversely determined, would singly or when
               aggregated with all other such actions, proceedings, arbitrations
               and investigations have a material adverse effect on the
               business, property or financial condition of the Corporation or
               on the ability of the Corporation to perform its obligations
               under this Debenture or any of the other Documents; 

               (ii)   any amendment of its articles, by-laws or other
               organizational documents; 

               (iii)  any actual or threatened revocation, termination,
               modification, amendment, substitution, issuance or other material
               event relating to Material Authorizations or to mining claims,
               concessions or leases respecting the Kemess Mine and, following
               any such event, the Corporation shall at the request of the
               Holder use its best efforts to obtain from the appropriate
               Governmental Body or other Persons such consents, approvals,
               acknowledgements or other documents as the Holder may consider
               necessary, acting reasonably, to ensure that the Holder has valid
               and enforceable first priority Liens on all such Material
               Authorizations, mining claims, concessions or leases and may
               avail itself of the rights and privileges of the Corporation
               thereunder and assign such rights and privileges should the
               Holder enforce its rights and remedies in respect of the Security
               and the other Documents;

               (iv)   any development which has had or will have a material
               adverse effect upon its business, property or financial condition
               or its ability to perform its obligations under this Debenture or
               any of the other Documents or which should reasonably be expected
               to be of material interest to the Holder, other than any changes
               in the market prices of gold or copper or changes in the Can. 
               $/U.S.$ currency exchange rate;

                                       26

<PAGE>

               (v)    any development which would lead the Corporation to
               reasonably believe that the Kemess Mine Production Date will not
               be on or before December 31, 1998;

               (vi)   any Default or Event of Default; and

               (vii)  any default or event of default, or the occurrence or
               non-occurrence of any event which constitutes, or which with the
               passage of time or giving of notice or both would constitute, a
               material default under any other agreement to which the
               Corporation or any Subsidiary is a party or by which they or any
               of their properties may be bound which has a material adverse
               effect on the business, property or financial condition of the
               Corporation or its ability to perform its obligations under this
               Debenture or any other Document; 

       giving in each case the details thereof and specifying the action
       proposed to be taken with respect thereto.

       (l)     QUARTERLY CASHFLOW STATEMENTS.  On or prior to the date hereof
       and on the 25th day following the end of each calendar quarter
       thereafter the Corporation shall deliver to the Holder in form and
       substance acceptable to the Holder a cashflow statement on a line item
       basis for the ensuing twelve (12) month period, all in such detail as
       the Holder may reasonably require.

       (m)     MONTHLY FINANCIAL STATEMENTS.  The Corporation shall, as soon as
       practicable and in any event within 25 days after the end of each month,
       deliver to the Holder the monthly unaudited consolidated financial
       statements of the Corporation for the previous monthly period including
       in each case a balance sheet, statement of profit and loss and a
       statement of changes in financial position, together with comparative
       figures for the corresponding month in the previous Financial Year;

       (n)     INTERIM FINANCIAL STATEMENTS.  The Corporation shall, as soon as
       practicable and in any event within 60 days after the end of each of the
       first three Financial Quarters of each Financial Year, deliver to the
       Holder the interim unaudited consolidated financial statements of the
       Corporation and, at the request of the Holder, interim unaudited
       unconsolidated financial statements of the Corporation and of the
       Subsidiaries, including in each case a balance sheet, statement of
       profit and loss and a statement of changes in financial position,
       together with comparative figures for the corresponding period in the
       previous Financial Year;


                                       27
<PAGE>


       (o)     ANNUAL FINANCIAL STATEMENTS.  The Corporation shall, as soon as
       practicable and in any event within 120 days after the end of each
       Financial Year, deliver to the Holder the annual audited consolidated
       financial statements of the Corporation and, at the request of the
       Holder, annual unaudited unconsolidated financial statements of the
       Corporation and of each Subsidiary including in each case a balance
       sheet, statement of profit and loss, a statement of changes in financial
       position and a statement of retained earnings, together with comparative
       figures for the previous Financial Year;

       (p)     OFFICER'S CERTIFICATE.  The Corporation shall deliver to the
       Holder, together with the financial statements referred to in Sections
       5.1(l), (n) and (o), an officers' certificate certifying (i) that such
       financial statements were prepared in accordance with generally accepted
       accounting principles (subject to normal year-end adjustments in the
       case of interim unaudited financial statements) and fairly present the
       financial condition of the Corporation and the other Subsidiaries and
       the financial information presented therein for the period and as at the
       date thereof, (ii) that no Default or Event of Default has occurred
       hereunder or, if any Default or Event of Default has occurred,
       specifying the relevant particulars and the period of existence thereof
       and the action taken or proposed to be taken by the Corporation with
       respect thereto, and (iii) demonstrating in reasonable detail compliance
       (or, as the case may be, non-compliance) with the covenants contained in
       Section 5.1(t);

       (q)     PUBLIC AND OTHER INFORMATION.  The Corporation shall from time to
       time deliver to the Holder copies of all reports, financial statements,
       information or proxy circulars and other information or notices sent by
       the Corporation (i) to its shareholders at the same time as the
       Corporation sends such material to its shareholders, and (ii) pursuant
       to the Subordinated Note Trust Indenture at the same time as Corporation
       sends such material to the recipient thereof, and (iii) the Corporation
       shall deliver to the Holder copies of all press releases, material
       change reports and similar disclosures filed by the Corporation with any
       securities regulatory authority or stock exchange, provided that, if any
       such reports or disclosures under this paragraph (iii) are filed on a
       confidential basis, then the Corporation shall not be required to
       deliver the same to the Holder until such time as they are no longer
       filed on a confidential basis;

       (r)     CHANGE OF CONTROL.  The Corporation shall immediately notify the
       Holder in the event of a Change of Control of the Corporation;

       (s)     OTHER INFORMATION.  The Corporation shall furnish to the Holder,
       as soon as practicable following a request therefor from the Holder,
       such other information as the Holder may reasonably request from time to
       time;


                                       28
<PAGE>


       (t)     FINANCIAL COVENANTS.  The Corporation shall ensure that:

               (i)    EBITDA shall not be less than:

                      (A)     for the Financial Quarter ending March 31, 1999,
                      Can. $9,000,000;

                      (B)     for the two Financial Quarters ending June 30,
                      1999, Can. $18,000,000;

                      (C)     for the three Financial Quarters ending September
                      30, 1999, Can. $27,000,000; and 

               (ii)   following September 30, 1999, Can. $36,000,000 as at the
               end of each Financial Quarter and calculated in each case for the
               preceding 12 months;

       (u)     KEMESS MINE PRODUCTION DATE.  The Corporation shall keep the
       Holder informed as to the progress of the construction, development and
       operation of the Kemess South Mine and when the Kemess Mine Production
       Date has occurred and shall deliver to the Holder a certificate
       (together with reasonable backup) of a senior officer to that effect; 

       (v)     PAMOUR MINE AND NIGHTHAWK LAKE MINE.  The Corporation shall, and
       shall cause each Subsidiary, as required to, forthwith following a
       request therefor from the Holder and at the expense of the Corporation
       deliver to the Holder valid and enforceable first priority Liens against
       the Pamour Mine and the Nighthawk Lake Mine all in form and substance
       satisfactory to the Holder and its Counsel together with legal opinions
       in form and content, and from legal counsel, satisfactory to the Holder
       regarding the validity, enforceability and priority of such Liens and
       regarding such other matters as the Holder may require to evidence
       compliance with the terms of this Debenture; provided that the Holder
       may only request such Liens at a time that the aggregate amount then
       outstanding under the Debentures (including principal and accrued
       interest and unpaid fees and expenses) exceeds U.S.$60,000,000; and

       (w)     PROPOSED LEASEBACK ASSETS.   The Corporation will pay or cause to
       be paid all amounts payable to Trilon Bancorp Inc. pursuant to an
       equipment lease dated April 6, 1998 between the Corporation and Trilon
       Bancorp Inc. (Lease Number L-RY001) on the dates and in the manner
       specified therein and the Corporation will comply with, perform and
       carry out all of its obligations provided under such equipment lease.


                                       29
<PAGE>


       (x)     PERMITTED PAYMENTS SECURITY.   The Corporation will provide 10
       days prior written notice to the Holder of any proposed Permitted
       Payments together with detailed particulars of the Permitted Payments. 
       The Corporation will provide or cause to be provided to the Holder prior
       to or contemporaneous with the making of any such Permitted Payments:

               (i)    a guarantee from each Subsidiary receiving such Permitted
               Payments pursuant to which the Subsidiary guarantees to the
               Holder all of the obligations of the Corporation to the Holder;

               (ii)   such agreements, conveyances, deeds and other documents
               and instruments as the Holder shall reasonably request in
               furtherance of granting to the Holder valid and enforceable first
               priority Liens on all of the present and after acquired property,
               undertaking and assets of each Subsidiary receiving such
               Permitted Payments and the Corporation shall at the expense of
               the Corporation register, file or record the same (or a notice or
               financing statement in respect thereof) in all offices where such
               registration, filing or recording is, in the opinion of the
               Holder, necessary or advisable to constitute, perfect and
               maintain such Liens in all jurisdictions reasonably required by
               the Holder, subject only to Permitted Encumbrances, provided that
               (subject always to the provisions of Section 5.1(v)) the
               Corporation shall not be obligated to register the Security
               against any real property or mineral claims comprising the Pamour
               Mine, the Nighthawk Lake Mine and the mines generally known as
               Giant, Hope Brook and Colomac, and the Corporation's currently
               existing exploration properties not in any way relating to the
               Kemess Mine; and 

               (iii)  legal opinions in form and content, and from legal
               counsel, satisfactory to the Holder regarding the validity,
               enforceability and priority of all Liens created by such Security
               Documents and regarding such other matters as the Holder may
               require to evidence compliance with the terms of this Debenture
               and the other Documents.


5.2    HOLDER'S RIGHT TO DECLINE TO RECEIVE INFORMATION

       Notwithstanding the obligations of the Corporation to provide the
notices, documents and information referred to in Sections 5.1(k), (l), (m),
(n), (o), (p) and (u), the Holder shall be entitled to decline to receive any or
all such notices, documents and information by giving written notice thereof to
the Corporation.  In the event the Holder gives any such notice to the
Corporation, the Corporation shall withhold the


                                       30
<PAGE>


notices, documents and information expressly stated in the written notice of 
the Holder for such periods of time and on such terms as the Holder may 
direct.  The Holder may at any time supplement, revoke or otherwise change 
its directions to the Corporation under this Section 5.2 by further written 
notice to the Corporation. Nothing in this Section 5.2 or in any written 
notice given by the Holder hereunder in any way reduces or otherwise affects 
the obligation of the Corporation to provide to the Holder the information 
referred to in Sections 5.1(q) and (r).

5.3    NEGATIVE COVENANTS

       So long as this Debenture or any obligations of the Corporation under
this Debenture or any other Document remain outstanding, the Corporation
covenants and agrees that without the prior written consent of the Holder
neither the Corporation nor any Material Subsidiary shall:

       (a)     ENCUMBER PROPERTY.  Create, grant, assume or suffer to exist any
       Lien upon any of its properties or assets other than Permitted
       Encumbrances;

       (b)     LOANS AND INVESTMENTS.  Except for (i) loans by the Corporation
       and APM to existing employees not at any time exceeding in the aggregate
       U.S. $2,250,000 and loans by the Corporation and APM to new employees
       employed after the date hereof not at any time exceeding in the
       aggregate U.S. $750,000, (ii) APM Transactions, (iii) payments of up to
       Can. $1,500,000 in the aggregate made by the Corporation to purchase
       shares in the capital of Asia Minerals Corp. and of Highwood Resources
       Ltd., and (iv) Permitted Payments, make any loans to, or acquire or
       invest in any securities issued by, any Person other than currently
       existing loans by the Corporation to any Subsidiaries of which notice in
       writing has been provided to the Holder;

       (c)     NON-ARM'S LENGTH TRANSACTIONS.  Except for (i) loans by the
       Corporation and APM to existing employees not at any time exceeding in
       the aggregate U.S. $2,250,000 and loans by the Corporation and APM to
       new employees employed after the date hereof not at any time exceeding
       in the aggregate U.S. $750,000, (ii) APM Transactions, (iii) the
       acquisition by the Corporation of the Mikwam Property from Highwood
       Resources Ltd. on the terms disclosed to the Holder in writing prior to
       the date hereof, (iv) the sale by the Corporation of the Copperstone
       Property to a purchaser not dealing at arm's length to the Corporation,
       and (v) Permitted Payments, repay any indebtedness or liabilities owed
       to, transfer assets to, purchase assets from, lease property to or from,
       pay any monies to, guarantee Debt of, provide other financial assistance
       to, or otherwise enter into any transaction or agreement to do any of
       the foregoing (other than as may be expressly contemplated by the
       Documents) with or in respect of any Affiliate (or any corporation
       which, after the transaction in


                                       31
<PAGE>


       question becomes effective, would become an Affiliate) or with any
       officer, director, employee, shareholder or other related Person of the
       Corporation or any Subsidiary, provided that if the Corporation has not
       committed an Event of Default, the Corporation may pay ordinary course
       compensation to officers, directors and employees consistent with past
       practice and additional ordinary course compensation under the
       Corporation's head office employee plans, in an aggregate amount not
       exceeding U.S.$5,000,000 in any Financial Year.

       (d)     RESTRICTED DISTRIBUTIONS.  Except for APM Transactions and
       Permitted Payments, declare, pay or make any dividend or other
       distribution on any shares in its capital or purchase, redeem, retire,
       cancel or acquire (i) any shares in the capital of the Corporation or
       any Subsidiary (except shares acquired upon the conversion thereof into
       other shares in its capital), (ii) any option, warrant or other right to
       acquire shares in the capital of the Corporation or any Subsidiary, or
       (iii) any debt or equity security of the Corporation or any Subsidiary,
       provided that the Corporation shall be entitled to declare and pay stock
       dividends and to wind-up Witteck Development Inc. and transfer to the
       Corporation all the property and assets of Witteck Development Inc.;

       (e)     DISPOSITION OF ASSETS.  Except for Permitted Payments, sell,
       lease, consign or otherwise dispose of or agree to sell, lease, consign
       or otherwise dispose of, any assets or property.  Notwithstanding the
       foregoing so long as no Default or Event of Default has occurred or
       would occur as a result of any such sale, lease, consignment or other
       disposition (collectively a "Sale"):

               (i)    at any time prior to the Kemess Mine Production Date,
               assets of the Corporation, other than assets which comprise or
               are in any way material to the Kemess Mine, may be sold by the
               Corporation for proceeds equal to their fair market value to
               purchasers dealing at arm's length with the Corporation provided
               that:

                      (a)     if the proceeds from all such Sales in the
                              aggregate are equal to or less than Can.
                              $15,000,000, such proceeds shall be used solely
                              for prepayments of principal hereunder in
                              accordance with the provisions of Section 2.4
                              hereof, regular debt service payments pursuant to
                              the Subordinated Notes, payment of capital and
                              non-capital expenses of the Corporation in
                              connection with the construction, development and
                              operation of Kemess Mine and/or general corporate
                              purposes; and

                      (b)     if the proceeds from all such Sales in the
                              aggregate exceed Can. $15,000,000, such excess
                              proceeds shall be used


                                       32
<PAGE>


                              solely for prepayments of principal hereunder in
                              accordance with the provisions of Section 2.4
                              hereof and/or for payment of capital and
                              non-capital expenses of the Corporation in
                              connection with the construction, development and
                              operation of the Kemess Mine;

               (ii)   at any time following the Kemess Mine Production Date,
               provided that EBITDA of the Corporation for the consecutive three
               (3) calendar month period immediately prior to the date of such
               Sale is Can. $9,000,000 or more, assets of the Corporation, other
               than assets which comprise or are in any way material to the
               Kemess Mine, may be sold by the Corporation at fair market value
               to purchasers dealing at arm's length to the Corporation and the
               proceeds of such Sales may be used for general corporate purposes
               of the Corporation; and

               (iii)  at any time, assets of the Corporation which comprise or
               were in any way material to the Kemess Mine but which fall below
               the Materiality Threshold as a result of them being or becoming
               obsolete or redundant, provided that if saleable they are sold or
               disposed of by the Corporation for proceeds equal to their fair
               market value to purchasers at arm's length with the Corporation
               and the proceeds of such Sale are used in connection with the
               construction, development and operation of the Kemess Mine.

       In addition to the foregoing, and notwithstanding the Security, the
       Corporation may without the consent of the Holder at any time prior to
       the occurrence of a Default or Event of Default sell:

               (iv)   the Proposed Leaseback Assets for cash consideration as
               part of an operating leaseback agreement or as part of an
               agreement comprising an Eligible Capital Lease Obligation and
               Purchase Money Security Interest;

               (v)     the Corporation's interest in the Copperstone Property
               to a purchaser not dealing at arm's length to the Corporation for
               consideration of shares in or a royalty interest from the
               purchaser thereof; and

               (vi)   the Corporation's interest in the Mikwam Property to a
               purchaser not dealing at arm's length to the Corporation for
               consideration of shares in or a royalty interest from the
               purchaser thereof;


                                       33
<PAGE>


provided, in such cases, that the transaction is with an arm's length Person (or
to a non-arm's length Person but on arm's-length terms in the case of a Sale of
the Copperstone Property and the Mikwam Property) and on reasonable commercial
terms and that the proceeds of disposition become immediately subject to the
Liens in favour of the Holder created pursuant to the Security Documents. In the
event of any disposition or sale referred to in the immediately preceding
sentence, the Holder will deliver such acknowledgements and discharges of the
Security as the Corporation may reasonably request for the purpose of giving
effect to such sale rights on the part of the Corporation.  

       (f)     DEBT.  Create, incur, assume or suffer to exist, contingently or
       otherwise, Debt other than Permitted Debt.

       (g)     REPAYMENT OF DEBT.  Pay any principal, interest, fees or any
       other amounts in respect of Debt other than Permitted Payments and other
       than, if no Default or Event of Default has occurred:

               (i)    payments of interest on the Subordinated Notes ordinarily
               due and payable in accordance with the terms and conditions
               contained in the Subordinated Note Trust Indenture; and

               (ii)   other amounts ordinarily due and payable in respect of
               Permitted Debt provided that such payments shall not be
               inconsistent with the terms and conditions of applicable
               documents provided to the Holder prior to the date hereof.

       (h)     GUARANTEES.  Other than as may constitute Permitted Debt,
       guarantee, give financial assistance to or render itself liable in any
       manner whatsoever, directly or indirectly, conditionally or otherwise
       for any Debt or obligation whatsoever of a third party.

       (i)     AMALGAMATIONS, ETC.  Enter into any transaction (including by way
       of reorganization, consolidation, amalgamation, merger, reconstruction,
       liquidation, transfer, sale, lease or otherwise) whereby all or any
       material portion or significant operating division of the undertaking,
       property and assets of the Corporation or a Material Subsidiary would
       become the property of any other Person or, in the case of any such
       amalgamation, of the continuing corporation resulting therefrom without
       the Holder's prior written consent, provided that the Holder will
       provide its consent if the Holder, acting reasonably, determines that
       such transaction will not impair or prejudice the ability of the
       Corporation or the Material Subsidiaries to pay the indebtedness owing
       hereunder, to perform its covenants hereunder or impair or prejudice the
       Holder's Security.


                                       34
<PAGE>

       (j)     CHANGE IN BUSINESS.  (i) Enter into any contract, agreement or
       commitment out of the ordinary course of its business or (ii) acquire or
       establish any business unrelated to the current business of the
       Corporation or (iii) make any material change in, or terminate or
       suspend (other than in the ordinary course of its operations) any
       material part of, the construction, development and operation of the
       Kemess South Mine.

       (k)     PRICING, HEDGING PROTECTION.  Enter into any hedging or related
       arrangements (including, without limitation, forward sale contracts,
       options, currency swap agreements, interest swap agreements, and similar
       arrangements) which provide for (i) the granting of any Lien against the
       property, assets and undertaking of the Corporation or a Material
       Subsidiary other than Permitted Encumbrances or (ii) production advances
       or any other disposition of any property, assets or undertaking of the
       Corporation or a Material Subsidiary in consideration for advance or
       accelerated payment or other manner of prepayment or payment not
       contemporaneous with delivery, other than the sales by the Corporation
       of not more than U.S. $10,000,000 of copper concentrate pursuant to the
       Glencore Agreement.

       (l)     ENVIRONMENTAL MATTERS

               (i)    The Corporation shall maintain, and shall cause each of
               the Subsidiaries to maintain, a system to assure and monitor
               continued compliance with all Applicable Laws relating to the
               environment, which system shall include periodic reviews of such
               compliance.

               (ii)   Subject to the Materiality Threshold, if the Corporation
               or any Subsidiary (a) receives written notice that any violation
               of any Applicable Law relating to the environment may have been
               committed or is about to be committed by it, (b) receives written
               notice that any administrative or judicial complaint or order has
               been filed or is about to be filed against it alleging violations
               of any Applicable Law relating to the environment or requiring it
               to take any action in connection with the release of Hazardous
               Substances into the environment, or (c) receives any written
               notice from a Governmental Body or other Person alleging that it
               may be liable or responsible for costs associated with a response
               to or clean-up of a release of a Hazardous Substance into the
               environment or any damages caused thereby, the Corporation or
               Subsidiary, as the case may be, shall provide the Holder with a
               copy of such notice within ten days of receipt thereof. Subject
               to the Materiality Threshold, the Corporation or Subsidiary, as
               the case may be, shall also provide to the Holder, as soon as
               practicable after it becomes available, 


                                       35
<PAGE>


               a copy of any environmental site assessment or audit 
               report required to be submitted to any Governmental Body.

               (iii)  The Corporation shall indemnify the Holder and its
               officers, directors, employees, agents and shareholders, and
               shall hold each of them harmless, from and against any and all
               losses, liabilities, damages, costs, expenses and claims
               (including legal fees on a solicitor and his own client basis)
               suffered or incurred by such party in respect of (a) any
               violation by the Corporation or any Subsidiary of Applicable Law
               related to the environment including the assertion of any Lien
               thereunder, (b) the presence of any Hazardous Substance affecting
               the Mortgaged Property or any adjacent real estate, or (c) the
               release of any Hazardous Substance by the Corporation or any
               Subsidiary into the environment, provided that the foregoing
               indemnity shall not apply in connection with any negligence,
               willful misconduct or violation of any Applicable Law relating to
               the environment affecting the Mortgaged Property by the Holder or
               its agents after taking possession of the Mortgaged Property. The
               Corporation's obligations and indemnification under this section
               shall survive the satisfaction and release of the Security
               Documents and the repayment of this Debenture. The Holder shall
               hold the benefit of this indemnity in trust for those indemnified
               parties who are not parties to this Debenture.

       (m)     CAPITAL EXPENDITURES.   Make or permit any of its Subsidiaries,
       on a consolidated basis, to make any Capital Expenditures in any
       Financial Year in excess of Can. $12,000,000 if such Capital
       Expenditures do not directly relate to the construction, development or
       operation of the Kemess South Mine.

       (n)     BANKING.  Open or operate or permit any of its Subsidiaries to
       open or operate a bank account anywhere other than in the provinces of
       Ontario, British Columbia or Quebec and other than as set out in
       SCHEDULE T1.

       (o)     GRANT OR AMEND SECURITY.  Grant or permit any of its Subsidiaries
       to grant any Liens to any of the holders of Permitted Encumbrances set
       out in Section (b) or Section (l) of the definition thereof other than
       in such form and on such property, assets or undertaking of the
       Corporation or such Subsidiary that has been previously provided to the
       Holder hereunder, or amend or permit any of its Subsidiaries to amend
       any of the agreements, instruments or documents which provide Liens to
       any of the holders of Permitted Encumbrances set out in Section (b) or
       Section (l) of the definition thereof and which have been granted on or
       prior to the date hereof.

       (p)     AMEND SUBORDINATED NOTE TRUST INDENTURE.  Amend the Subordinated
       

                                       36
<PAGE>


       Note Trust Indenture.

       (q)     BANK WORKING CAPITAL FACILITY.  Amend the Bank Working Capital
       Facility or increase the principal amount that may from time to time be
       outstanding under the Bank Working Capital Facility to an amount in
       excess of Can. $1,900,000.



ARTICLE 6 - DEFAULT AND ACCELERATION

6.1    EVENTS OF DEFAULT

       The occurrence of any of the following events shall constitute an Event
of Default:

       (a)     if the Corporation defaults in payment of (i) all or any part of
       the principal of this Debenture when due, or (ii) all or any part of the
       fees provided for in Section 2.3 hereof when due; or

       (b)     if the Corporation defaults in payment of any interest or any
       other amount due hereunder; or

       (c)     if the Corporation defaults in observing or performing any other
       covenant or condition of this Debenture, the Purchase Agreement, the
       Security Documents, any other Debentures, or any other Document on its
       part to be observed or performed, and, if the default in question is one
       which is reasonably capable of being cured or remedied, such default
       continues for a period of 20 days after notice has been given to the
       Corporation by the Holder specifying such default and requiring the
       Corporation to rectify the same or cause to be rectified the same; or

       (d)     if any representation and warranty made by the Corporation in any
       Document is found to be false or incorrect in any material respect; or

       (e)     if an order is made or an effective resolution is passed for the
       winding-up or liquidation of the Corporation, or in the event of any
       other dissolution of the Corporation by operation of law; or

       (f)     if the Corporation defaults after the expiry of any applicable
       cure period thereunder in any way in the performance of any obligations
       to any holders of (i) Subordinated Notes or (ii) any of the Permitted
       Encumbrances referred to in clause (b) of the definition of Permitted
       Encumbrances; or if any such holder


                                       37
<PAGE>


       asserts any claim or takes any proceeding against the Corporation and 
       such claim or proceeding is not being contested in good faith by all 
       appropriate actions or, if proceedings are commenced against the 
       Corporation, the rights of such holders are at any time unstayed or 
       undismissed; or

       (g)     if the Corporation shall generally not pay its debts as such
       debts become due, or shall admit its inability to pay its debts
       generally as they become due or otherwise acknowledge its insolvency, or
       shall make a general assignment for the benefit of creditors; or any
       proceeding shall be instituted by the Corporation seeking to adjudicate
       it a bankrupt or insolvent, or seeking liquidation, winding-up,
       reorganization, arrangement, adjustment, protection, relief or
       composition of it or its debts, or a proposal is made by the Corporation
       under any Applicable Law relating to bankruptcy, insolvency or
       reorganization or relief of debtors, or seeking the entry of an order
       for the appointment of a receiver, trustee, custodian or other similar
       official for it or for any substantial part of its property, including
       without limitation any such proceeding under the Companies' Creditors
       Arrangement Act (Canada); or the Corporation shall take any action to
       consider, approve or authorize any of the actions set forth above; or

       (h)     if any proceeding shall be instituted against the Corporation
       seeking to adjudicate it a bankrupt or insolvent, or seeking
       liquidation, winding-up, reorganization, arrangement, adjustment,
       protection, relief or composition of it or its Debts, or a proposal is
       made against the Corporation under any Applicable Law relating to
       bankruptcy, insolvency or reorganization or relief of debtors, or
       seeking the entry of an order for the appointment of a receiver,
       trustee, custodian or other similar official for it or for any
       substantial part of its property, including without limitation any such
       proceeding under the COMPANIES' CREDITORS ARRANGEMENT ACT (Canada), and
       such proceeding is at any time not being contested in good faith by all
       appropriate proceedings or, if so contested, remains outstanding,
       undismissed and unstayed, more than 30 days from the institution of such
       proceeding; or

       (i)     if any execution, distress or other enforcement process, whether
       by court order or otherwise, involving indebtedness of the Corporation
       individually or in the aggregate in excess of Can. $2,000,000 becomes
       enforceable against any property of the Corporation and if such
       execution, distress or other enforcement process shall have been
       commenced by a creditor before obtaining judgment, such execution,
       distress or other enforcement process shall not have been stayed or
       vacated within 3 Business Days from the commencement thereof, or if any
       judgment or order for the payment of money in excess of Can. $2,000,000
       shall be rendered against the Corporation and either (i) enforcement
       proceedings shall have been commenced by any creditor upon such judgment
       or order or (ii) there shall be any period during which a stay of
       enforcement of 


                                       38

<PAGE>
       such judgment or order, by reason of a pending appeal or otherwise, 
       shall not be in effect;

       (j)     if any event or proceeding is taken with respect to any part of
       the Mortgaged Property in any jurisdiction outside Canada which has an
       effect equivalent or similar to any of the events described in sections
       6.1(e), 6.1(g) or 6.1(h); or

       (k)     if the Corporation fails to make to any Person when due any
       payment (whether at scheduled maturity or by required prepayment,
       acceleration, demand or otherwise, but excluding trade payables incurred
       in the ordinary course of business which are not overdue by 90 days or
       more or are being contested in good faith by all appropriate proceedings
       promptly instituted and diligently conducted by the Corporation) in
       respect of indebtedness which exceeds individually Can. $3,000,000 or in
       the aggregate Can. $7,000,000; or any other event shall occur or
       condition shall exist specified in any agreement or instrument relating
       to any such indebtedness or liability of the Corporation if the effect
       of such event or condition is to accelerate, or to permit the
       acceleration of the maturity of such indebtedness or liability of the
       Corporation; or any such indebtedness or liability of the Corporation
       which is outstanding shall be declared to be due and payable prior to
       the stated maturity thereof and in each such case such failure or event
       is not remedied within 20 days of such failure or event; or

       (l)     If the Corporation allows, permits, consents to or becomes
       subject to a Change of Control of the Corporation without the prior
       written consent of the Holder, provided that it shall not be an Event of
       Default hereunder and the Holder will consent to a Change of Control of
       the Corporation if prior to such Change of Control of the Corporation
       the Holder, acting reasonably, determines that such Change of Control of
       the Corporation (i) will not impair or prejudice the ability of the
       Corporation to pay any indebtedness owing hereunder or to perform its
       covenants hereunder, and (ii) will not impair or prejudice the Holder's
       Security; or

       (m)     if the Kemess Mine Production Date is not on or before December
       31, 1998; or

       (n)     if any Material Subsidiary commits an event of default (after any
       applicable cure period) in any agreement with or obligation owing to the
       Holder including pursuant to any of the Documents; or

       (o)     If the Corporation commits a default under or is in breach of the
       equipment lease dated April 6, 1998 between the Corporation and Trilon
       Bancorp Inc. (Lease Number L-RY001).

6.2    ACCELERATION ON DEFAULT

                                       39
<PAGE>


       Upon the occurrence of an Event of Default, the Holder may, in its
discretion:

               (a)    declare the principal amount of this Debenture then
               outstanding, all accrued and unpaid interest hereunder and any
               other moneys payable hereunder to be immediately due and payable
               by the Corporation to the Holder; and

               (b)    realize upon all or any part of the Security constituted
               by the Security Documents; and

               (c)    take such actions and commence such proceedings as may be
               contemplated by the Documents or permitted at law or in equity
               (whether or not provided for herein or in the Security Documents
               or other Documents) at such times and in such manner as the
               Holder in its sole discretion may consider expedient;

all without, except as may be required by Applicable Law, any additional notice,
presentment, demand, protest, notice of protest, dishonour or any other action.

6.3    REMEDIES CUMULATIVE

       No remedy conferred upon or reserved to the Holder herein or in the
Security Documents or any other Document is intended to be exclusive of any
other remedy, but each and every such remedy shall be cumulative and shall be in
addition to every other remedy given hereunder or now or hereafter existing by
law or by statute.

6.4    DEBENTURE NOT REQUIRED

       All rights of action under the Security Documents or hereunder may be
enforced by the Holder without the possession of this Debenture or the
production thereof on the trial or other proceedings relating thereto.

                                       40
<PAGE>

ARTICLE 7 -  MISCELLANEOUS

7.1    NOTICE

       Any notice or other communication required or permitted to be given
hereunder shall be in writing and shall be given by facsimile or other means of
electronic communication or by delivery as hereafter provided. Any such notice
or other communication, if sent by facsimile or other means of electronic
communication, shall be deemed to have been received on the Business Day
following the sending, or, if delivered by hand, shall be deemed to have been
received at the time it is delivered to the applicable address noted below
either to the individual designated below or to an individual at such address
having apparent authority to accept deliveries on behalf of the addressee.
Notice of change of address shall also be governed by this section.  Notices and
other communications shall be addressed as follows:


       (a)     if to the Corporation:        Royal Oak Mines Inc.
                                             c/o Arctic Precious Minerals, Inc.,
                                             d.b.a Royal Oak Mines (U.S.A.) Inc.
                                             5501 Lakeview Drive
                                             Kirkland, Washington
                                             U.S.A. 98033

                                             Attention:  President
                                             Facsimile Number:  (425) 822-3349

               with a copy to:               Lang Michener
                                             BCE Place, Box 747
                                             2500 - 181 Bay Street
                                             Toronto, Ontario
                                             M5J 2T7
                                             Attention:  William Sheridan and
                                             David Thring
                                             Facsimile No.:  (416) 365-1719

                                       41
<PAGE>

       (b)     if to the Holder:             Northgate Exploration Limited
                                             1 First Canadian Place
                                             Suite 2630, P.O. Box 143
                                             Toronto, Ontario
                                             M5X 1C7

                                             Attention: Terry Lyons
                                             Facsimile Number: (416) 363-2856

               with a copy to:               Goodman and Carr
                                             Suite 2300
                                             200 King Street West
                                             Toronto, Ontario
                                             M5H 3W5

                                             Attention:     Jeffrey Blidner and
                                                            Lorne Segal
                                             Facsimile No.: (416) 595-0567

                                       42
<PAGE>

7.2    ASSIGNMENT

       The Corporation may not assign this Debenture. This Debenture and the
Holder's rights hereunder may be assigned at any time by the Holder in whole or
in part (including, without limitation, by the grant or conveyance of
participations in its interests hereunder), together with, at its discretion,
its corresponding rights in any or all of the Security Documents and other
Documents. Upon an assignment pursuant to this section, the Corporation shall,
at the request of the assignee, issue a replacement Debenture registered in the
name of the assignee (and, in the case of a partial assignment, shall also issue
a replacement Debenture to the Holder in respect of the principal balance held
by it), upon surrender and cancellation of the existing Debenture, and shall
also, at the Holder's request, execute and deliver new Security Documents and
other Documents to and in favour of the assignee. The Corporation shall also,
and shall cause the Subsidiaries to, execute and deliver such other agreements,
documents and instruments as the Holder or the assignee may request in
connection with such assignment. The Holder may provide to any proposed assignee
or participant such information concerning the financial position and the
operations of the Corporation and its Subsidiaries as, in the opinion of the
Holder, may be relevant or useful in connection with this Debenture or any other
Document or any portion thereof proposed to be acquired by such assignee or
participant. Notwithstanding anything else in this Section 7.2, if no Default or
Event of Default has occurred the Holder shall not be entitled to assign this
Debenture to any corporation whose principal business is the exploration for or
mining of precious or base metals (other than to such Persons in which the
Holder or their respective Associates and Affiliates has a direct or indirect
interest, which Persons may be an assignee of this Debenture or the Documents). 
Following a Default or an Event of Default, there shall be no restrictions on
the Holder's ability to assign tis Debenture or any of the Documents.

7.3    EXCHANGE OF INFORMATION

       The Holder may provide to any proposed assignee or participant such
information concerning the financial position and the operations of the
Corporation and its Subsidiaries as, in the opinion of the Holder, may be
relevant or useful in connection with this Debenture or any other Document or
any portion thereof proposed to be acquired by such assignee or participant.

                                       43
<PAGE>

7.4    RELIANCE AND NON-MERGER

       All covenants, agreements, representations and warranties of the
Corporation made herein or in any other Document or in any certificate or other
document signed by any of its directors or officers and delivered by or on
behalf of either of them pursuant hereto or thereto are material, shall be
deemed to have been relied upon by the Holder notwithstanding any investigation
heretofore or hereafter made by the Holder or the Holder's Counsel or any
employee or other representative of the Holder and shall survive the execution
and delivery of this Debenture and the other Documents until the Corporation
shall have satisfied and performed all of its obligations hereunder and
thereunder.  Nothing contained in this Debenture shall operate to subordinate
the Security provided in favour of the Holder to or in favour of any Permitted
Encumbrance or other Liens, or to postpone any of the obligations owing by the
Corporation to the Holder to any of the obligations, indebtedness or liabilities
owed by the Corporation to the holders of the Permitted Encumbrances or other
Liens.

7.5    AMENDMENT, WAIVER

       No amendment or waiver of this Debenture shall be binding unless
executed in writing by the Corporation if it is to be bound thereby, or by the
Holder if the Holder is to be bound thereby (any such amendment or waiver to be
contemporaneously made in respect of the Debenture).  No waiver of any provision
of this Debenture will constitute a waiver of any other provision nor will any
waiver of any provision of this Debenture constitute a continuing waiver unless
otherwise expressly provided.

7.6    NO SET-OFF BY THE CORPORATION

       The amounts payable by the Corporation under this Debenture or any other
Document shall not be subject to any deduction, withholding, set-off or
counterclaim by the Corporation for any reason whatsoever.

7.7    EMPLOYMENT OF EXPERTS

       The Holder may, at any time and from time to time, when a Default or
Event of Default has occurred and is continuing, retain and employ legal
counsel, independent accountants, consultants and other experts in order to
perform or assist it in the performance of its rights and powers under this
Debenture or the other Documents, and the Corporation shall pay to the Holder on
demand all proper and reasonable compensation paid or payable to such counsel,
accountant, consultant or other expert retained or employed pursuant to this
provision.

                                       44
<PAGE>

7.8    FURTHER ASSURANCES

       Whether before or after the happening of a Default or Event of Default,
the Corporation shall at its own expense do, make, execute or deliver, or cause
to be done, made, executed or delivered by its Subsidiaries or other Persons,
all such further acts, documents and things in connection with this Debenture
and the other Documents as the Holder may reasonably require from time to time
for the purpose of giving effect to the Documents including, without limitation,
for the purpose of facilitating the enforcement of the Security, all immediately
upon the request of the Holder.

7.9    GOVERNING LAW

       This Debenture shall be governed by and construed in accordance with the
laws of the Province of Ontario and the federal laws of Canada applicable
therein.  The Corporation submits to the jurisdiction of the courts of Ontario
to determine all issues whether at law or in equity arising from this Debenture.

7.10   PAYMENT OF COSTS AND EXPENSES

       The Corporation shall pay to the Holder on demand all reasonable costs
and expenses of the Holder, its agents, officers and employees, and any receiver
or receiver-manager appointed by the Holder or by a court, in connection with
this Debenture, the Security Documents and the other Documents including,
without limitation:

       (a)     the preparation, execution, filing and registration of the
       Debenture, the Security Documents, and the other Documents (including,
       without limitation, any Security Documents and other Documents to be
       delivered following the date hereof pursuant to Article 3 hereof) and
       any actual or proposed amendment or modification hereof or thereof or
       any waiver hereunder or thereunder and all instruments supplemental or
       ancillary thereto;

       (b)     obtaining advice as to the Holder's rights and responsibilities
       under this Debenture, the Security Documents and the other Documents at
       any time after an Event of Default; and

       (c)     the defence, establishment, protection or enforcement of any of
       the rights or remedies of the Holder under this Debenture, any of the
       Security Documents or any other Documents including, without limitation,
       all costs and expenses of establishing the validity and enforceability
       of, or of collection of amounts owing under, this Debenture, any of the
       Security Documents or any other Documents or of any enforcement of the
       Security,

                                       45
<PAGE>

and all of the fees, expenses and disbursements of any advisors to the Holder
including, Counsel to the Holder on a solicitor and his own client basis,
incurred in connection therewith, and including all sales or value-added taxes
payable by the Holder (whether refundable or not) on all such costs and
expenses. 

7.11   JUDGMENT CURRENCY

       If for the purpose of obtaining judgment in any court, it is necessary
to convert an amount due under this Debenture or any other of the Documents or
under any instrument delivered thereunder from a currency in which it is due
(the "Original Currency") into another currency (the "Second Currency") the
parties hereto agree, to the fullest extent permitted by law, that the rate of
exchange used shall be that at which, in accordance with normal banking
procedures, the Holder could purchase the Original Currency with the Second
Currency on the date two Business Days preceding that on which judgment is
given.  The obligation of the Corporation in respect of any Original Currency
due from it to the Holder under this Debenture or any other Documents or under
any instrument delivered thereunder shall, notwithstanding any judgment in the
Second Currency, be discharged by a payment made to the Holder entitled thereto
on account thereof in the Second Currency only to the extent that, on the
Business Day following receipt of such payment in the Second Currency, the
Holder may, in accordance with normal banking procedures, purchase the amount
due in the Original Currency with the amount of the Second Currency so paid; and
if the amount of the Original Currency which may be so purchased is less than
the amount originally due in the Original Currency, the Corporation agrees as a
separate and independent obligation and notwithstanding any such payment or
judgment to indemnify the Holder against such deficiency.  

7.12   PAYMENT AGREEMENTS FOR DEBENTURE

       Notwithstanding anything contained herein, the Corporation may enter
into an agreement with the Holder, in the absolute discretion of the Holder,
providing for the payment to such Holder of the principal of and interest on
this Debenture at a place and in a manner other than the place and manner
specified herein as the place and manner for such payment.  Any payment of the
principal of and interest on this Debenture at such other place and in such
other manner pursuant to such agreement shall, notwithstanding any other
provision of this Debenture, be valid and binding on the Corporation and the
Holder. 

                                       46
<PAGE>

7.13   ENTIRE AGREEMENT

       The Documents constitute the entire agreement between the parties hereto
pertaining to the matters therein set forth and supersede and replace any prior
understandings or arrangements pertaining to such matters.  There are no
warranties, representations or agreements between the parties in connection with
such matters except as specifically set forth or referred to in the Documents. 

       IN WITNESS WHEREOF the Corporation has executed this Debenture on the
date first above written. 

                                   ROYAL OAK MINES INC.

                                   By: /s/ James H. Wood
                                      --------------------------------------
                                   Name:  James H. Wood
                                   Title:  Chief Financial Officer

       Dated as of June 22, 1998

                                       47
<PAGE>
                                     SCHEDULE "A"

                                     DEFINITIONS

"ADDITIONAL PURCHASE PRICE" has the same meaning given to such term in the
Purchase Agreement;

"AFFILIATE" has the meaning ascribed thereto in the BUSINESS CORPORATIONS ACT
(Ontario) and includes, for greater certainty, all Subsidiaries;

"APM" means Arctic Precious Metals, Inc., a company incorporated under the laws
of Nevada;

"APM TRANSACTIONS" means ordinary course transactions between the Corporation
and APM in accordance with past practice and generally as described in SCHEDULE
B hereto provided, however that such transactions shall not in any one Financial
Year involve transactions of the kind referred to in sections 5.3(b)(i),(ii) and
(iii), 5.3(c) and 5.3(d) hereof aggregating more than Can. $13,500,000 and
provided further that such transactions shall be permitted only prior to an
Event of Default;

"APPLICABLE LAW" means, in respect of any Person, property, transaction or
event, all applicable laws, statutes, rules, by-laws and regulations, and all
applicable official written directives, orders, judgments and decrees of
Governmental Bodies;

"ASSOCIATE" has the meaning ascribed thereto in the BUSINESS CORPORATIONS ACT
(Ontario) and shall include any entity which is an Associate of an Associate,
and so on;

"AUDITED FINANCIAL STATEMENTS" means the audited consolidated financial
statements of the Corporation as at and for the 12 month fiscal period ended
December 31, 1997, consisting of a balance sheet, an income statement and a
statement of changes in financial position, together with the notes thereto,
copies of which have been provided to the Holder;

"BANK WORKING CAPITAL FACILITY" means a working capital facility provided to the
Corporation by the Bank of Nova Scotia pursuant to a credit agreement dated
February 15, 1996 as amended by agreements dated August 5, 1996 and May 30, 1997
in a maximum principal amount not to exceed Can. $1,900,000 pursuant to which
the Bank of Nova Scotia has outstanding letters of credit on behalf of the
Corporation and in respect of which the Corporation has provided to the Bank of
Nova Scotia cash collateral as security therefor in the approximate amount of
Can. $2,012,126 as at May 19, 1998 plus interest thereon.

"BUSINESS DAY" means any day, other than Saturday, Sunday or any statutory
holiday in Toronto, Canada;

"CAPITAL EXPENDITURES" means, for any period, those expenditures of the
Corporation (on a consolidated basis) which would, in accordance with generally
accepted accounting principles, be considered expenditures for capital assets of
the Corporation (on a consolidated basis) for such period;

<PAGE>

"CAPITAL LEASE OBLIGATIONS" of the Corporation means the obligations of the
Corporation to pay rent or other amounts under a lease (or other agreement
conveying the right to use) of real or personal property, which obligations are
required to be classified and accounted for as a capital lease on a balance
sheet under generally accepted accounting principles and, for purposes of this
Debenture, the amount of such obligations shall in each case be the capitalized
amount thereof, determined in accordance with generally accepted accounting
principles;

"CHANGE OF CONTROL OF THE CORPORATION" means if any Person acquires or becomes
the beneficial owner of, or a combination of Persons acting jointly acquire or
become the beneficial owners of, directly or indirectly more than 35% of the
common shares of the Corporation or any shares of the Corporation which in the
aggregate represent 35% of the voting shares of the Corporation, whether through
the acquisition of previously issued and outstanding shares, or of shares that
have not been previously issued, or any combination thereof, or any other
transaction having a similar effect;

"CONFIDENTIALITY AGREEMENT" means the Confidentiality Agreement dated February
19, 1998 between the Corporation and BC Pacific Capital Corporation;

"CONSENT" has the meaning attributed to such term in Section 4.1(g);

"COPPERSTONE PROPERTY" has the meaning ascribed thereto in SCHEDULE U;

"COUNSEL" means a barrister or solicitor or firm of barristers and solicitors
retained by the Holder or retained by the Corporation and acceptable to the
Holder acting reasonably;

"DEBENTURE" means this Senior Secured Debenture - Series B of the Corporation as
it may be amended, modified, restated or replaced from time to time;

"DEBENTURES" means all Senior Secured Debentures of the Corporation (whether
Series A or Series B) sold pursuant to the Purchase Agreement as same may be
amended, modified, restated or replaced from time to time.

"DEBT" of any Person means all indebtedness including, without limitation (i)
all indebtedness of such Person for and in respect of borrowed money, including
obligations with respect to bankers' acceptances, letters of credit and letters
of guarantee or indemnity; (ii) all indebtedness of such Person for the deferred
purchase price of property or services represented by a note or other evidence
of indebtedness or other security; (iii) all indebtedness created or arising
under any conditional sale or other title retention agreement with respect to
property acquired by such Person (even though the rights and remedies of the
seller or lender under such agreement in the event of default are limited to the
possession or sale of such property); (iv) all obligations under leases which,
in accordance with generally accepted accounting principles (or accounting
principles generally accepted in the jurisdiction of incorporation or
organization of such Person), are recorded as capital leases, in respect of
which such Person is liable as lessee; (v) all

                                       2
<PAGE>

indebtedness or obligations of such Person pursuant to any interest rate 
swaps, currency swaps, commodity agreements and similar hedging agreements; 
and (vi) all Debt Guaranteed by such Person;

"DEBT GUARANTEED" by any Person means Debt of the kinds referred to in (i)
through (v) of the definition of Debt which is directly or indirectly guaranteed
by such Person or which such Person has agreed (contingently or otherwise) with
the creditor to purchase or otherwise acquire or assume, or in respect of which
such Person has otherwise assured a credit against loss by means of an
indemnity, security or bond;

"DEFAULT" means any event which, but for the lapse of time, giving of notice or
both, would constitute an Event of Default;

"DISCLOSED DEFAULTS" has the meaning given to such term in Section 4.1(n)
hereof;

"DOCUMENTS" means, collectively, the Debenture, the Security Documents and any
other document now or hereafter delivered to the Holder by the Corporation or
any Subsidiary pursuant to or in connection therewith including any document,
agreement or guarantee delivered to the Holder pursuant to or in connection with
the Reorganization Undertaking (as defined in the Purchase Agreement);

"EBITDA" means, for any period, Net Income for such period, plus (i)
consolidated interest expense of the Corporation and its Subsidiaries for such
period, plus (ii) provision for income taxes of the Corporation and its
Subsidiaries for such period, plus (iii) depreciation, amortization (including
amortization of goodwill and other intangibles but excluding amortization of
prepaid cash expenses that were paid in a prior period) and other non-cash
charges (excluding any such non-cash charge to the extent that it represents an
accrual of or reserve for cash charges in any future period or amortization of a
prepaid cash expense that was paid in a prior period) of the Corporation and its
Subsidiaries to the extent that such depreciation, amortization and other
non-cash charges were deducted in computing Net Income for such period, minus
(iv) non-cash items increasing consolidated revenues of the Corporation and its
Subsidiaries in determining Net Income for such period, in each case on a
consolidated basis and determined in accordance with generally accepted
accounting principles; provided that the following shall not be included in the
calculation of EBITDA as either a charge or revenue: (a) non-cash changes in the
carrying value of the Subordinated Notes and other Debt which is not denominated
in Canadian dollars and is translated to Canadian dollars at the balance sheet
date; and (b) non-cash changes resulting from the marking to market of foreign
currency and commodity contracts; and provided further that premiums paid or
received on options, warrants or similar instruments shall be recognized, for
the purposes of EBITDA, as expenses or revenue, as the case may be, only on the
date on which the option, warrant or other instrument in question expires,
matures, is exercised or otherwise terminates;

"ELIGIBLE CAPITAL LEASE OBLIGATIONS AND PURCHASE MONEY SECURITY INTERESTS" means
(a) Capital Lease Obligations and Purchase Money Security Interests existing as
at the date hereof

                                       3
<PAGE>

or any renewals or replacements thereof on materially the same terms and in 
amounts not materially exceeding those existing as at the date hereof; and 
(b) Capital Lease Obligations and Purchase Money Security Interests incurred 
following the date hereof if the claims of the lessor or creditor thereunder 
are limited to recovery or repossession of the leased or financed property in 
question and if such leased or financed property is newly acquired by the 
Corporation;

"EVENT OF DEFAULT" has the meaning attributed to such term in section 6.1;

"EXCLUDED ASSETS" means the Windy Craggy Property;

"EXISTING ENCUMBRANCES" means the Liens specifically described in SCHEDULE C1;

"FINAL MATURITY DATE" has the meaning given to such term in Section 2.3(a)
hereof;

"FINANCIAL QUARTER" means, in relation to the Corporation or any Subsidiary, the
four periods each consisting of three months in each Financial Year of the
Corporation or such Subsidiary ending on the last day of each of the third,
sixth, ninth and twelfth months in such Financial Year;

"FINANCIAL YEAR" means, in relation to the Corporation or any Subsidiary, the
period beginning on January l and ending on December 31 of each calendar year;

"GENERALLY ACCEPTED ACCOUNTING PRINCIPLES" means the accounting principles so
described and promulgated by the Canadian Institute of Chartered Accountants
from time to time;

"GLENCORE AGREEMENT" means the letter agreement dated November 5, 1997 between
the Corporation and Glencore Ltd. relating to the sale by the Corporation of
copper concentrate;

"GOVERNMENTAL BODY" means any government, parliament, legislature, or any
regulatory, authority, agency, commission or board of any government, parliament
or legislature, or any court or (without limitation to the foregoing) any other
law, regulation or rule-making entity (including, without limitation, any
central bank, fiscal or monetary authority or authority regulating banks),
having jurisdiction in the relevant circumstances, or any Person acting under
the authority of any of the foregoing (including, without limitation, any
arbitrator);

"HAZARDOUS SUBSTANCE" includes but is not limited to any contaminants,
pollutants, dangerous substances, liquid wastes, industrial wastes, toxic
substances, hazardous wastes, hazardous materials of whatsoever nature or kind
or any other hazardous substance within the meaning of any Applicable Law
including without limitation the HAZARDOUS PRODUCTS ACT (Canada), the CANADIAN
ENVIRONMENTAL PROTECTION ACT (Canada), the ENVIRONMENTAL PROTECTION ACT
(Ontario) and the WASTE MANAGEMENT ACT (B.C.);

"HOLDER" means Trilon Financial Corporation and its successors and permitted
assigns;

                                       4
<PAGE>

"INITIAL PURCHASE PRICE" has the same meaning given to such term in the Purchase
Agreement; 

"INTELLECTUAL PROPERTY" means all trade marks, trade names, patents, patent
applications, copyrights, trade secrets, logos, processes, computer systems and
application software which are owned or used by, or which relate to the business
of, the Corporation or the Subsidiaries;

"INTEREST PAYMENT DATE" means each day on which interest is payable hereunder
pursuant to section 2.1;

"INTEREST RATE" means the LIBOR Rate plus 6.0% per annum;

"INTERIM FINANCIAL STATEMENTS" means the unaudited consolidated financial
statements of the Corporation as at and for the 4 month period ended April 30,
1998 consisting of a balance sheet, an income statement and a statement of
changes in financial position, a copy of which has been provided to the Holder;

"KEMESS MINE" means the Kemess North Property and the Kemess South Mine;

"KEMESS NORTH PROPERTY" means all present and future property and assets
comprising or relating to what is generally referred to as the Kemess North
Property in British Columbia, Canada including, without limitation, all mineral
claims and leases referred to in SCHEDULE B-1 hereto, all buildings, equipment,
fixtures and other property and assets owned or leased by the Corporation (or in
which the Corporation otherwise has an interest) situated or used at the Kemess
North Property site all operations, exploration and other activities carried on
at such site and all permits, authorizations, licenses and similar approvals
relating thereto;

"KEMESS SOUTH MINE" means all present and future property and assets comprising
or relating to what is generally referred to as the Kemess South Mine property
in British Columbia, Canada including, without limitation, all mineral claims
and leases referred to in SCHEDULE B-2 hereto, all buildings, equipment,
fixtures and other property and assets owned or leased by the Corporation (or in
which the Corporation otherwise has an interest) situated or used at the Kemess
South Mine site, all operations, exploration and other activities carried on at
such site and all permits, authorizations, licenses and similar approvals
relating thereto;

"KEMESS MINE PRODUCTION DATE" means the date that the Kemess South Mine has
produced concentrate over the immediately preceding 30 day period, and is able
to sustain and maintain such production thereafter, of not less than 8500 short
tons of concentrate yielding mineral content that is acceptable to Glencore Ltd.
pursuant to the Glencore Agreement (without giving effect to any amendments
thereof);

"KEMESS MINE CONSTRUCTION CONTRACTS" has the meaning given to such term in
Section 4.1(x);

                                       5
<PAGE>

"KNOWLEDGE" means the best knowledge of the senior management of that party
(which in the case of the Corporation specifically includes but is not limited
to the Kemess Mine Project Manager, the Kemess Mine Project Director and the
Kemess Mine Manager of Project Accounting, after having made all reasonable
inquiries;

"LIBOR RATE" means the rate of interest per annum, calculated on the basis of a
year of 360 days, determined by the Holder for a 30 day period to be (i) the
rate per annum, calculated on the basis of a year of 360 days, which appears on
the Reuters Telerate Page 3750 as of 11:00 a.m. (London time) on the second
Business Day prior to the commencement of such 30 day period in an amount of
U.S. dollars equal to the principal amount then outstanding under the Debenture
and for a 30 day deposit period, or (ii) if such rate does not appear on the
Reuters Telerate Page 3750 as and when contemplated herein, the arithmetic
average (rounded upwards to the nearest 1/16th of 1%) of the rates of interest
per annum, calculated on the basis of a year of 360 days, at which any three
prime banks in the London inter-bank market are offering deposits at
approximately 11:00 a.m. (London time) on the second Business Day prior to the
commencement of such 30 day period in an amount of U.S. dollars equal to the
principal amount then outstanding under this Debenture and for a 30 day deposit
period;

"LIEN" means any mortgage, lien, pledge, assignment, charge, security interest,
lease intended as security, title retention agreement, rights reserved in any
Governmental Body, registered lease of real property, hypothec, levy, execution,
seizure, attachment, garnishment or other similar encumbrance and includes any
contractual restriction which, if contravened, may give rise to an encumbrance;

"MATERIAL AUTHORIZATION" means, with respect to the Corporation or any
Subsidiary, any approval, permit, licence or similar authorization from, and any
filing or registration with, any Governmental Body required by such Person to
own its property and assets or to carry on its business in each jurisdiction in
which it does so or is contemplated to do so, where the failure to have such
approval, permit, licence, authorization, filing or registration would have a
material adverse effect upon its business, financial condition or prospects;

"MATERIAL CONTRACTS" has the meaning given to such term in Section 4.1(x);

"MATERIAL SUBSIDIARIES" means APM and all Subsidiaries each of which has total
assets exceeding a fair market value of Can. $2,000,000;

"MATERIALITY THRESHOLD" means that the representation, warranty, covenant or
other obligation in question shall apply only to subject matter which
individually or in the aggregate is or should reasonably be expected as
determined by the Holder, acting reasonably, to be material to:

     (a)  the business, property or affairs of the Corporation taken as a
     whole;

     (b)  the construction, ownership or operation of the Kemess Mine or
     the requirement

                                       6
<PAGE>

     that the Kemess Mine Production Date occur on or before
     December 31, 1998; or

     (c)  the Holder, in its capacity as a secured creditor of the
     Corporation under the Documents;

"MIKWAM PROPERTY" has the meaning ascribed thereto in SCHEDULE V;

"MORTGAGED PROPERTY" means all of the property, assets and undertaking of the
Corporation and APM of every nature and kind, both present and future, real and
personal, tangible and intangible, other than Excluded Assets, including without
limitation all proceeds of disposition of any such property, assets and
undertaking;

"NET INCOME" means, for any period, the aggregate of the net income of the
Corporation and its Subsidiaries determined on a consolidated basis in
accordance with generally accepted accounting principles (for greater certainty,
after Taxes), but excluding therefrom (i) extraordinary items, (ii) any gains or
losses from the sale of any assets (other than inventory sold in the ordinary
course of business) of the Corporation or its Subsidiaries, (iii) the net income
of any Subsidiary to the extent that the declaration or payment of dividends or
similar distributions by that Subsidiary of that net income is not permitted,
directly or indirectly, by operation of the terms of its charter or any
agreement, instrument, judgment, decree, order, statute, rule or governmental
regulation applicable to that Subsidiary or its shareholders, or is not
permitted without prior governmental approval (that has not been obtained), and
(iv) the income or loss from any entity in which the Corporation's or its
Subsidiary's, as applicable, investment is classified pursuant to generally
accepted accounting principles as a minority interest;

"NIGHTHAWK LAKE MINE" has the meaning ascribed thereto in SCHEDULE W;

"PAMOUR MINE" has the meaning ascribed thereto in SCHEDULE X;

"PERMITTED DEBT" means, collectively, the indebtedness pursuant to the
Debentures and:

     (a)  indebtedness of the Corporation under the Subordinated Notes;

     (b)  indebtedness of the Corporation which, pursuant to agreements and
     confirmations delivered by the applicable creditor to and in favour of
     the Corporation and the Holder in form and content satisfactory to the
     Holder, is fully subordinated and postponed to the obligations of the
     Corporation to the Holder under the Debenture and the other Documents,
     provided that at the time any or all such indebtedness is incurred or
     reincurred no Default or Event of Default has occurred; 

     (c)  indebtedness of the Corporation to Persons under interest rate
     swaps, currency swaps, commodity agreements and similar hedging
     agreements (the "Permitted Hedging Indebtedness");

                                       7
<PAGE>

     (d)  Debt under or secured by Eligible Capital Lease Obligations and
     Purchase Money Security Interests, not at any time exceeding the
     aggregate of (A) Can. $30,000,000 plus (B) for so long as the Proposed
     Leaseback Assets are leased to the Corporation pursuant to the April 6,
     1998 lease between the Corporation and Trilon Bancorp Inc. (Lease Number
     L-RY001) and in the event of a sale and leaseback of the Proposed
     Leaseback Assets and solely for those purposes, the amount by which the
     Debt under or secured by an Eligible Capital Lease Obligation or
     Purchase Money Security Interest relating to the Proposed Leaseback
     Assets exceeds the difference between (1) Can. $30,000,000, and (2) the
     amount of Debt under all Eligible Capital Lease Obligations and Purchase
     Money Security Interests existing as at the date hereof;

     (e)  Debt by way of trade payables or the endorsement of negotiable
     instruments incurred or created in the ordinary course of business for
     the purpose of carrying on same.

"PERMITTED ENCUMBRANCES" means Liens granted to secure indebtedness under the
Debentures and other Documents, Liens granted to Trilon Financial Corporation to
secure obligations owing to it under a Royalty Agreement and a Royalty Debenture
each dated the date hereof; and: 

     (a)  the Existing Encumbrances set out in Parts I and II of SCHEDULE C1 
     hereto and extensions, renewals or refinancings thereof on materially the 
     same terms and in amounts not materially exceeding those existing at the 
     date hereof;

     (b)  Liens on the Mortgaged Property granted by the Corporation to
     holders of Permitted Hedging Indebtedness in an aggregate amount not at
     any time exceeding U.S. $50,000,000 to secure the Corporation's
     obligations in respect of Permitted Hedging Indebtedness in an aggregate
     amount not at any time exceeding U.S. $50,000,000, provided that each
     such holder delivers to and in favour of the Corporation and the Holder
     an inter-creditor agreement, in form and content satisfactory to the
     Holder, providing for, among other things, the subordination by such
     holders of Permitted Hedging Indebtedness Note of any Liens granted to
     them to and in favour of the Security until such time as all of the
     obligations of the Corporation to the Holder are satisfied in full;

     (c)  cash collateral accounts for the letters of credit specifically
     described in SCHEDULE Y and extensions, renewals or refinancings thereof
     on materially the same terms and in amounts not materially exceeding
     those existing at the date hereof;

                                       8
<PAGE>

     (d)  Liens for taxes, assessments or governmental charges incurred in
     the ordinary course of business that are not yet due and payable (taking
     into account any relevant grace periods), in respect of which the
     Corporation or a Subsidiary, as the case may be, has established on its
     books reserves to the extent required by generally accepted accounting
     principles considered by it and its auditors to be adequate therefor;

     (e)  rights reserved to or vested in any Governmental Body by the
     terms of any lease, licence, franchise, grant or permit, or by any
     statutory provision, to terminate the same, to take action which results
     in an expropriation, to designate a purchaser of any Mortgaged Property
     or to require annual or other payments as a condition to the continuance
     thereof;

     (f)  construction, contractors', mechanics', carriers',
     warehousemen's, suppliers' and materialmen's Liens and Liens in respect
     of vacation pay, workers' compensation, unemployment insurance or
     similar statutory obligations, provided the obligations secured by such
     Liens are not yet due and payable and, in the case of construction
     Liens, which have not yet been filed or for which the Corporation or a
     Subsidiary has not received written notice of a Lien, provided that in
     any case the Corporation may permit to exist construction Liens (in
     addition to those included in the definition of Existing Encumbrances
     and listed in Part I of SCHEDULE C1) which do not individually or in the
     aggregate relate to indebtedness exceeding Can. $10,000,000, which the
     Corporation is contesting in good faith by all appropriate proceedings
     promptly instituted and diligently conducted, and in respect of which,
     notice in writing has been given by the Corporation to the Holder, with
     full particulars thereof;

     (g)  zoning restrictions, easements, rights of way, leases or other
     similar encumbrances or privileges in respect of real property which in
     the aggregate do not materially impair the use of such property by the
     Corporation or a Subsidiary in the operation of its business;

     (h)  Liens in connection with any Eligible Capital Lease Obligations
     and Purchase Money Security Interests in respect of Debt not at any time
     exceeding in the aggregate of (A) Can. $30,000,000 plus (B) for so long
     as the Proposed Leaseback Assets are leased to the Corporation pursuant
     to the April 6, 1998 lease between the Corporation and Trilon Bancorp
     Inc. (Lease Number L-RY001) and in the event of a sale and leaseback of
     the Proposed Leaseback Assets and solely for those purposes, the amount
     by which the Debt under or secured by an Eligible Capital Lease
     Obligation or Purchase Money Security Interest relating to the Proposed
     Leaseback Assets exceeds the difference between (1) Can. $30,000,000 and
     (2) the amount of the Debt under all Eligible Capital lease Obligations
     and Purchase Money Security Interests existing as at the date hereof;

     (i)  security given by the Corporation or a Subsidiary to a public
     utility or any

                                       9
<PAGE>

     Governmental Body, when required by such utility or Governmental 
     Body in connection with the operations of the Corporation or
     Subsidiary in the ordinary course of its business, which singly or in
     the aggregate do not materially detract from the value of the asset
     concerned or materially impair its use in the operation  of the business
     of the Corporation or Subsidiary;

     (j)  the reservation in any original grants from the Crown of any land
     or interest therein and statutory exceptions to title;

     (k)  title defects or irregularities which are of a minor nature and
     which do not materially detract from the value of the assets of the
     Corporation or its Subsidiaries encumbered thereby;  

     (l)  Liens on the Mortgaged Property granted by the Corporation to or
     on behalf of holders of the Subordinated Notes in an aggregate principal
     amount not at any time exceeding U.S. $175,000,000 to secure the
     Corporation's obligations in respect of the Subordinated Note Trust
     Indenture in an aggregate principal amount not at any time exceeding
     U.S. $175,000,000, provided that Chase Manhattan Trust Company, National
     Association, as trustee thereunder and any other collateral agent
     appointed by it delivers to and in favour of the Corporation and the
     Holder an inter-creditor agreement, in form and content satisfactory to
     the Holder, providing for, among other things, the subordination by such
     holders of Subordinated Notes of any Liens granted to them to and in
     favour of the Security until such time as all of the obligations of the
     Corporation to the Holder are satisfied in full, and providing that
     notwithstanding the granting of such Liens the holders of the
     Subordinated Notes will take reasonable steps to ensure that they are
     placed in a separate class of creditors than the Holder in any
     insolvency proceedings relating to the Corporation and if
     notwithstanding the foregoing they are placed in the same class of
     creditors they will assign their votes to the Holder so as to permit the
     Holder to vote against and defeat any restructuring plan in such
     insolvency proceedings; and

     (m)  any other Lien which the Holder after the date hereof approves in
     writing as a Permitted Encumbrance;

provided that nothing herein shall constitute or be interpreted as a
postponement or subordination of the Security to any security granted by the
Corporation in connection with such Permitted Encumbrances.

"PERMITTED HEDGING INDEBTEDNESS" has the meaning given to it in paragraph (c) of
the definition of Permitted Debt;

"PERMITTED PAYMENTS" means any payment, distribution, loan, advance or 
transfer by a Restricted Subsidiary (as defined in the Subordinated Note 
Trust Indenture) to the Corporation or to another Restricted Subsidiary 
contemplated in paragraphs 4.13(a),(b) and (c) of the 

                                       10

<PAGE>

Subordinated Note Trust Indenture that, and only to the extent that, cannot 
be subject to a Payment Restriction pursuant to and as defined in Section 
4.13 of the Subordinated Note Trust Indenture;

"PERSON" means any individual, partnership, limited partnership, joint 
venture, syndicate. sole proprietorship, company or corporation with or 
without share capital, unincorporated association, trust, trustee, executor, 
administrator or other legal personal representative, government or 
governmental authority or entity, however designated or constituted;

"PREPAYMENT AMOUNT" means the principal amount of this Debenture which the
Corporation proposes to prepay under Section 2.4 plus a non-refundable fee of
one per cent (1%) of such principal amount being prepaid;

"PROCEEDS CONDITIONS" means the conditions precedent in favour of the Holder
that (i) the Kemess South Mine has produced concentrate over the immediately
preceding 30 day period, and is able to sustain and maintain such production
thereafter, of not less than 7500 short tons of concentrate yielding mineral
content that is acceptable to Glencore Ltd. pursuant to the Glencore Agreement
(without giving effect to any amendments thereof), (ii) at such time the Kemess
South Mine accounts payable of the Corporation do not exceed U.S.$15,000,000 and
(iii) at such time the Kemess South Mine accounts payable of the Corporation are
not overdue in accordance with their respective terms;

"PROPOSED LEASEBACK ASSETS" means one P & H model 2800XPB Electric Mining Shovel
(Serial No.28127) and one P & H model 100XP Rotary Blast Hole Drill (Serial
No.10036);

"PURCHASE AGREEMENT" means the Securities Purchase Agreement dated April 17,
1998 entered into by Trilon Financial Corporation and the Corporation in respect
of, inter alia, the purchase of the Debentures, as amended from time to time;

"PURCHASE MONEY SECURITY INTEREST" means any Lien given, assumed or arising by
operation of law, including capital leases, to provide or secure, or to provide
the obliger with funds to pay, the whole or any part of the consideration for
the acquisition of property where the principal amount of the obligation secured
by such Lien (i) is not in excess of the cost to the obliger of the property
encumbered thereby and (ii) is secured only by the property being acquired by
the obliger, and includes the renewal or refinancing of any such Lien upon the
same property provided that the indebtedness secured and the security therefor
are not increased thereby;

"ROYALTY AGREEMENT" has the same meaning given to such term in the Purchase
Agreement;

"ROYALTY DEBENTURE" has the same meaning given to such term in the Purchase
Agreement;

                                       11
<PAGE>

"SALE" has the meaning attributed to such term in section 5.3(e);

"SECURITY" means the Liens created by the Security Documents;

"SECURITY DOCUMENTS" means, collectively, the agreements, instruments and
documents delivered from time to time (both before and after the date of this
Debenture) to the Holder by the Corporation and APM and by any Subsidiary for
the purpose of creating, perfecting, preserving or protecting the security of
the Holder in respect of the Debenture and in respect of amounts outstanding
thereunder (including, without limitation, the documents referred to in Article
3, Section 5.1(v) and Section 5.1(x));

"SUBORDINATED NOTES" means the outstanding Secured 12.75% Senior Subordinated 
Notes due 2006 in the aggregate principal amount of U.S.$175,000,000;

"SUBORDINATED NOTE TRUST INDENTURE" means the Trust Indenture dated as of August
12, 1996 among the Corporation, Kemess Mines Inc. and Mellon Bank, F.S.B.
relating to the Subordinated Notes, as amended by (i) the First Supplemental
Indenture, dated and effective as of December 31, 1997, (ii) the Second
Supplemental Indenture dated and effective as of January 31, 1998, (iii) the
Third Supplemental Indenture dated and effective as of May 19, 1998, (iv) the
Fourth Supplemental Indenture dated and effective the date hereof, and (v) the
Fifth Supplemental Indenture dated and effective the date hereof, each by and
between the Corporation and Chase Manhattan Trust Company, National Association,
the successor to Mellon Bank, F.S.B. as Trustee;

"SUBSIDIARIES" means all of the corporations listed on SCHEDULE E and any other
corporation or limited liability company which is or hereafter becomes directly
or indirectly controlled by the Corporation, and for the purposes of this
definition, the Corporation shall be deemed to control a corporation if the
Corporation beneficially owns, directly or indirectly, shares to which are
attached more than 50% of the voting rights ordinarily exercisable at meetings
of shareholders of such corporation, and the Corporation shall be deemed to own
beneficially shares beneficially owned by a corporation controlled by it, and so
on indefinitely, and the Corporation shall be deemed to control a limited
liability company where it owns more than 50% of the equity interests in such
limited liability company;

"TAXES" means all taxes of any kind or nature whatsoever including, without
limitation, income taxes, sales or value-added taxes, levies, stamp taxes,
royalties, duties, and all fees, deductions, compulsory loans and withholdings
imposed, levied, collected, withheld or assessed as of the date hereof or at any
time in the future, by any Governmental Body of or within Canada or any other
jurisdiction whatsoever having power to tax, together with penalties, fines,
additions to tax and interest thereon;

"THIS DEBENTURE" and "THE DEBENTURE" refer to this Debenture and, unless 
otherwise expressly provided, not to any particular Article, section, 
subsection, paragraph, clause, subdivision or other portion hereof, and 
includes any and every instrument supplemental or ancillary hereto or in 
implementation hereof;

                                       12
<PAGE>

"WINDY CRAGGY PROPERTY" means the mineral claims in and around Windy Craggy
mountain in the Tatshenshini/Alsek region of northwestern British Columbia, more
particularly described in SCHEDULE F hereto.

                                       13

<PAGE>





                                 ROYAL OAK MINES INC.



- -------------------------------------------------------------------------------


                         SENIOR SECURED DEBENTURE - SERIES B


- -------------------------------------------------------------------------------



                                    JUNE 22, 1998









                           File #9801032.TRI - SENR12B.DEB

                                       LWS:wpc

                                  GOODMAN AND CARR
                                     Suite 2300
                                200 King Street West
                                  Toronto, Ontario
                                       M5H 3W5






<PAGE>

                                            TABLE OF CONTENTS

<TABLE>
<CAPTION>


ARTICLE NO.                                    DESCRIPTION                                   PAGE NO.
<S>         <C>                                                                              <C>
1 -  INTERPRETATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1
     1.1    Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1
     1.2    Use of Singular and Plural . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1
     1.3    Interpretation Not Affected by Headings, etc.. . . . . . . . . . . . . . . . . . . .  1
     1.4    Monetary References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1
     1.5    Day Not a Business Day . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2
     1.6    Invalidity of Provisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2
     1.7    References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2
     1.8    Debenture to Govern. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2
     1.9    Generally Accepted Accounting Principles . . . . . . . . . . . . . . . . . . . . . .  2
     1.10   Computation of Time Periods. . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.11   Debentures in Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3

2 -  PRINCIPAL AND INTEREST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4
     2.1    Interest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4
     2.2    Payment of Interest. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
     2.3    Repayment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
     2.4    Optional Prepayment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6

3 -  SECURITY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
     3.1    Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
     3.2    No Merger. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  8
     3.3    Further Assurances - Security. . . . . . . . . . . . . . . . . . . . . . . . . . . .  8

4 - REPRESENTATIONS AND WARRANTIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  9
     4.1    Representations and Warranties by the Corporation. . . . . . . . . . . . . . . . . .  9
     4.2    Survival of Representations and Warranties by the Corporation. . . . . . . . . . . . 20

5 -  COVENANTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
     5.1    Affirmative Covenants. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
     5.2    Holder's Right to Decline to Receive Information . . . . . . . . . . . . . . . . . . 27
     5.3    Negative Covenants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

6 -  DEFAULT AND ACCELERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
     6.1    Events of Default. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
     6.2    Acceleration on Default. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
     6.3    Remedies Cumulative. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
     6.4    Debenture Not Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

7 -  MISCELLANEOUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
     7.1    Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
     7.2    Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
     7.3    Exchange of Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
     7.4    Reliance and Non-Merger. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
     7.5    Amendment, Waiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
     7.6    No Set-Off by the Corporation. . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
     7.7    Employment of Experts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
     7.8    Further Assurances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
     7.9    Governing Law. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
     7.10   Payment of Costs and Expenses. . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
     7.11   Judgment Currency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
     7.12   Payment Agreements for Debenture . . . . . . . . . . . . . . . . . . . . . . . . . . 41
     7.13   Entire Agreement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

</TABLE>



<PAGE>

                                 ROYAL OAK MINES INC.

                       (Amalgamated under the laws of Ontario)

                         SENIOR SECURED DEBENTURE - SERIES B

       Royal Oak Mines Inc. (the "Corporation") for value received hereby
acknowledges itself indebted and promises to pay to or to the order of the
Holder on the Final Maturity Date, each as defined herein, or such dates as all
or any part of the principal amount hereof may become due in accordance with the
provisions hereof, the principal sum of THIRTY-FIVE MILLION UNITED STATES
DOLLARS (U.S. $35,000,000) (or such parts thereof as may become due), on
presentation and surrender of this Debenture (in the case of payment of all of
the principal amount hereof) to the Corporation at its registered office or at
such place as the Corporation may direct, and to pay interest on the principal
amount of this Debenture outstanding from time to time at the rates and times
and in the amounts set forth herein. 


ARTICLE 1 -    INTERPRETATION

1.1    DEFINITIONS

       In this Debenture, unless otherwise defined in this Debenture, the terms
set out in SCHEDULE A shall have the meanings ascribed to them in that schedule.

1.2    USE OF SINGULAR AND PLURAL

       Words importing the singular include the plural and vice versa and words
importing gender include all genders.

1.3    INTERPRETATION NOT AFFECTED BY HEADINGS, ETC.

       The division of this Debenture into Articles, Sections, subsections and
paragraphs and the insertion of headings are for convenience of reference only
and shall not affect the construction or interpretation of this Debenture.

1.4    MONETARY REFERENCES

       Any reference in this Debenture to "Canadian dollars" or "Can. $" or
similar terms shall be deemed to be a reference to lawful money of Canada and
any reference in this Debenture to "United States of America dollars", "United
States dollars" or "U.S. $" or similar terms shall be deemed to be a reference
to lawful money of the United States of America.  If no such references are made
with respect to any particular sum or obligation, the sum or obligation in
question shall be deemed to refer to lawful money of Canada.

<PAGE>

1.5    DAY NOT A BUSINESS DAY

       In the event that any day on or before which any action is required to
be taken hereunder is not a Business Day, then such action shall be required to
be taken on or before the requisite time on the first Business Day thereafter. 

1.6    INVALIDITY OF PROVISIONS

       Each of the provisions contained in this Debenture is distinct and
severable and a declaration of invalidity, illegality or unenforceability of any
such provision or part thereof by a court of competent jurisdiction shall not
affect the validity or enforceability of any other provisions hereof or thereof.
Without limiting the generality of the foregoing, if any amounts on account of
interest or fees or otherwise payable by the Corporation to the Holder hereunder
exceed the maximum amount recoverable under Applicable Law, the amounts so
payable hereunder shall be reduced to the maximum amount recoverable under
Applicable Law. 

1.7    REFERENCES

       Except as otherwise specifically provided, reference in this Debenture
to any contract, agreement or any other instrument shall be deemed to include
references to the same as varied, amended, supplemented or replaced from time to
time and reference in this Debenture to any enactment, including without
limitation any statute, law, by-law, regulation, ordinance or order, shall be
deemed to include references to such enactment as re-enacted, amended or
extended from time to time.

1.8    DEBENTURE TO GOVERN

       If there is any inconsistency between the terms of this Debenture and
the terms of any Security Document, the provisions hereof shall prevail to the
extent of the inconsistency, but the foregoing shall not apply to limit or
restrict in any way the rights and remedies of the Holder under the terms of the
Security Documents after the Liens thereby constituted shall have become
enforceable. 

                                       2
<PAGE>

1.9    GENERALLY ACCEPTED ACCOUNTING PRINCIPLES

       Unless otherwise specifically provided herein, all accounting terms
shall be applied and construed in accordance with Canadian generally accepted
accounting principles consistently applied.  For the purpose of determining
compliance with the financial covenants set forth in Section 5.1(t), all
computations shall be calculated on a consolidated basis, where applicable, and
shall be adjusted to eliminate the effect of any discretionary change by the
Corporation in the application of generally accepted accounting principles since
the date of its most recent audited consolidated financial statements prior to
the date hereof.

1.10   COMPUTATION OF TIME PERIODS

       In this Debenture, in the computation of periods of time from a
specified date to a later specified date, unless otherwise expressly stated, the
word "from" means "from and including", and the words "to" and "until" each mean
"to but excluding".

1.11   DEBENTURES IN SERIES

       The Series A Senior Secured Debentures of the Corporation (the "Series A
Debentures") may be issued to one or more holders.  The aggregate principal
amount of Series A Debentures which shall be issued shall be U.S. $85,000,000. 
The Corporation shall also issue Series B Senior Secured Debentures of the
Corporation (the "Series B Debentures"), the aggregate principal amount of which
shall be U.S. $35,000,000.

       This Debenture and all other Series B Debentures now or hereafter issued
shall be rateably secured by a Lien on the property, assets and undertaking of
the Corporation and shall rank pari passu inter se for payment (whether such
payment is a payment, repayment and/or prepayment and whether same is voluntary
or mandatory) of principal and/or interest hereunder and all such payments shall
be made pro rata to each holder of Series B Debentures in accordance with the
principal amount outstanding under the debenture held by such holder at the time
of such payment.

       For as long as a Default or an Event of Default has occurred and is 
continuing, all amounts realized pursuant to the enforcement or the exercise 
of collection or other remedial action pursuant to or with respect to the 
Security (as defined in the Series A Debenture) for the Series A Debenture or 
the Security for the Series B Debenture shall be applied first to pay in full 
any and all amounts outstanding pursuant to the Series A Debenture, and shall 
not be applied to pay any or all amounts outstanding pursuant to this Series 
B Debenture unless and until all amounts outstanding pursuant 

                                       3
<PAGE>

to the Series A Debenture have been paid in full.

       At all times prior to the occurrence of a Default or an Event of
Default, and at all times after a Default or an Event of Default which has
occurred has been cured, provided that no other Default or Event of Default has
occurred which is continuing, all amounts realized pursuant to the enforcement
or the exercise of collection or other remedial action pursuant to or with
respect to the Security (as defined in the Series A Debenture) for the Series A
Debenture or the Security for the Series B Debenture shall be applied pro rata
in accordance with the relative amounts outstanding under the Series A Debenture
and the Series B Debenture at the time of such payment.

       The Holder, by its acceptance of this Debenture, agrees to be bound by
the provisions contained herein.

1.12   REPAYMENT AMOUNT

       For the purposes of (i) the repayment and prepayment of the principal
amounts outstanding hereunder, (ii) the payment of interest thereon and (iii)
the payment of fees contemplated in Sections 2.3 and 2.4 hereof, the amount
outstanding hereunder at any time shall be the aggregate of the Initial Purchase
Price paid by the Holder, the Additional Purchase Price paid by the Holder if
any, any and all compounded interest at such time, and such other fees, expenses
and other amounts as may be payable by the Corporation to the Holder pursuant to
the Documents at such time.

1.13   USE OF PROCEEDS

       The Corporation hereby covenants, agrees, represents and warrants with
and to the  Holder that the Corporation will use the proceeds from the issuance
and sale of Debentures:

       (a)     to repay all amounts outstanding under the Senior Secured
       Debenture Facility (as defined in the Purchase Agreement);

       (b)     to repay those Kemess South Mine accounts payable of the
       Corporation listed in SCHEDULE G; 

       (c)     to fund capital and non-capital expenses of the Corporation in
       connection with the construction, development and operation of the
       Kemess South Mine.

       In addition to the foregoing, and until the occurrence of a Default or
Event of Default hereunder:

                                       4
<PAGE>

       (d)     the Corporation may use such proceeds for general corporate
       purposes in an amount not to exceed the aggregate of U.S. $20,000,000;
       and

       (e)     to the extent that the amounts referred to in Section 1.13(d)
       hereof are insufficient to satisfy the general corporate purposes of the
       Corporation, and provided the Proceeds Conditions have then been and
       remain satisfied, the Corporation may then use such proceeds for general
       corporate purposes.


ARTICLE 2 -    PRINCIPAL AND INTEREST

2.1    INTEREST

       Interest shall accrue from the date hereof, before and after the
occurrence of an Event of Default, demand, maturity or judgment, on the
outstanding principal amount of this Debenture, and on all overdue costs,
expenses and interest payable hereunder, at the Interest Rate and shall be
calculated and compounded monthly on the first day of each calendar month, and
shall be payable on the first day of the calendar month occurring after the
earlier of (i) July 31, 1998, and (ii) the Kemess Mine Production Date, and
thereafter shall be calculated and compounded monthly and payable monthly in
arrears on the first calendar day of each month in each year (each an "Interest
Payment Date") and on the Maturity Date.  Notwithstanding the foregoing
sentence, any accrued or accruing interest hereunder shall become and shall be
immediately due and payable in full in the event that the principal amount
outstanding hereunder has become due and payable.

2.2    PAYMENT OF INTEREST

       Except as otherwise provided for herein, as interest on this Debenture
becomes due (except interest payable on the Maturity Date, which shall be paid
upon presentation and surrender of this Debenture for payment), the Corporation
shall pay to the Holder the interest due and payable on each Interest Payment
Date, without deduction or set-off, by wire transfer of immediately available
funds to such account and address of the Holder as may be provided by the Holder
from time to time. 

2.3    REPAYMENT

(a)    Subject to the terms and conditions of this Debenture including the
provisions of Section 6.2 hereof, the principal amount of this Debenture and all
accrued interest thereon and any other amounts payable hereunder in connection
with this Debenture shall be repaid in full on the date that is two years from
the date hereof (the "Final Maturity Date").

                                       5
<PAGE>

(b)    In addition to any other amounts payable by the Corporation hereunder,
the Corporation shall pay:

       (i)     on February 15, 1999, a non-refundable fee equal to 2% of the
               amount by which the aggregate amount then outstanding under the
               Debentures (including principal and accrued interest and unpaid
               fees and expenses) exceeds U.S. $80,000,000; and

       (ii)    On October 15, 1999, a non-refundable fee equal to 2% of the
               amount by which the aggregate principal amount then outstanding
               under the Debentures (including principal and accrued interest
               and unpaid fees and expenses) exceeds U.S. $50,000,000.

Such fees shall be payable to the holders of the Debentures pro rata and pari
passu, in accordance with the provisions of Section 1.11.


2.4    OPTIONAL PREPAYMENT

       Subject to the terms and conditions of this Debenture and provided no
Default or Event of Default has occurred hereunder, under any other Series B
Debentures or under any of the Series A Debentures, the Corporation shall have
the privilege of prepaying from time to time, on any Business Day, all or any
part of the principal amount of this Debenture on payment to the Holder of the
Prepayment Amount provided that:

       (a)     any such prepayment shall only be made on at least five Business
       Days' notice to the Holder, which notice, once given, shall be
       irrevocable and binding upon the Corporation;

       (b)     any such prepayment shall be in an amount of at least U.S.
       $5,000,000;

       (c)     any such prepayment shall be accompanied by payment of all
       interest, fees and other amounts accrued in respect of the principal
       amount being so prepaid to the date of prepayments as well as all other
       amounts due and payable under this Debenture on the date of prepayment; 

       (d)     each such prepayment shall be in accordance with Section 1.11;
       and

       (e)     no such prepayment will be permitted at any time that the
       Permitted Encumbrances set out in Part I of SCHEDULE C1 exceeds
       Can.$10,000,000.

                                       6
<PAGE>

2.5    SUBORDINATED NOTE TRUST INDENTURE

       The Corporation hereby designates the Debt payable hereunder by the
Corporation to the Holder as "Designated Senior Indebtedness" pursuant to and in
accordance with the Subordinated Note Trust Indenture.


ARTICLE 3 -    SECURITY

3.1    SECURITY

       (a)     As security for the due and punctual payment of all of its
       obligations to the Holder under or in respect of this Debenture and the
       other Documents, the Corporation shall execute and deliver to the
       Holder, contemporaneous with the delivery of this Debenture to the
       Holder, valid and enforceable Liens against all present and 
       after-acquired property, undertaking and assets of the Corporation except
       the Excluded Assets, all in form and substance satisfactory to the Holder
       and its Counsel, including without limitation the following:

               (i)    a security debenture by the Corporation creating a fixed
               and floating Lien on all of the Corporation's present and 
               after-acquired property and assets including, without limitation,
               fixed and specific Liens on all property and assets comprising 
               the Kemess Mine;

               (ii)   a general security agreement by the Corporation creating
               a Lien on all of the Corporation's present and after-acquired
               property and assets;

               (iii)  a limited guarantee by APM of the obligations of the
               Corporation to the Holder;

               (iv)   a general security agreement by APM creating a Lien on
               all of APM's present and after-acquired property and assets;

               (v)    assignments of the Corporation's interests in all
               material mining claims, concessions and leases in any way
               relating to the Kemess Mine;

               (vi)   an assignment by the Corporation of its rights and
               interest in the Kemess South Resources Limited Partnership;

               (vii)  if and to the extent required by the Holder, an
               assignment (and, where required, consents to such assignment) by
               the Corporation of its rights and interest in the Kemess Mine
               Construction Contracts;

                                       7
<PAGE>

               (viii) an assignment (and, where required, consent to such
               assignment) by the Corporation of its rights and interest in such
               of the Material Contracts as the Holder may designate;

               (ix)   pledges of all of the shares in the capital of APM held
               by the Corporation; 
               (x)    a deed of moveable hypothec for use in the province of
               Quebec; and

               (xi)   such other agreements and documents as may, in the sole
               discretion of the Holder, be necessary or desirable to grant to
               the Holder valid and enforceable Liens on all of the property,
               undertaking and assets of the Corporation other than the Excluded
               Assets. 

       Notwithstanding anything to the contrary contained in the foregoing but
       subject always to the provisions of Section 5.1(v), the Corporation
       shall not be obligated to register the Security against any real
       property or mineral claims comprising:  (i) the Pamour Mine, the
       Nighthawk Lake Mine and the mines generally known as Giant, Hope Brook
       and Colomac; and (ii) the Corporation's currently existing exploration
       properties not in any way relating to the Kemess Mine.

       (b)     Contemporaneous with the delivery of the Security Documents
       contemplated by Section 3.1(a), the Corporation shall deliver to the
       Holder legal opinions in form and content, and from legal counsel,
       satisfactory to the Holder regarding the validity, enforceability and
       priority of all Liens created by such Security Documents and regarding
       such other matters as the Holder may require to evidence compliance with
       the terms of this Debenture and the other Documents.

       (c)     The Corporation shall ensure that all of the Security Documents
       are executed and delivered in accordance with this Article 3 and the
       Liens created thereby are perfected in all jurisdictions and at all
       times reasonably required by the Holder. 

3.2    NO MERGER

       The Security Documents shall not merge in any other security.  No
judgment obtained by the Holder shall in any way affect any of the provisions of
this Debenture or any of the Security Documents.  For greater certainty, no
judgment obtained by the Holder shall in any way affect the obligation of the
Corporation to pay principal, fees and interest at the rates, times and in the
manner provided in this Debenture.

                                       8
<PAGE>

3.3    FURTHER ASSURANCES - SECURITY

       From time to time following the Closing Date, the Corporation shall at
the expense of the Corporation take such action (including, without limitation,
the provision of information and access to property) and execute and deliver to
the Holder such agreements, conveyances, deeds and other documents and
instruments as the Holder shall reasonably request in furtherance of granting to
the Holder valid and enforceable first priority Liens on all of the
Corporation's present and after acquired property, undertaking and assets other
than the Excluded Assets, and the Corporation shall at the expense of the
Corporation register, file or record the same (or a notice or financing
statement in respect thereof) in all offices where such registration, filing or
recording is, in the opinion of the Holder, necessary or advisable to
constitute, perfect and maintain such Liens in all jurisdictions reasonably
required by the Holder, subject only to Permitted Encumbrances, provided that
(subject always to the provisions of Section 5.1(v)) the Corporation shall not
be obligated to register the Security against any real property or mineral
claims comprising:  (i) the Pamour Mine, the Nighthawk Lake Mine and the mines
generally known as Giant, Hope Brook and Colomac; and (ii) the Corporation's
currently existing exploration properties not in any way relating to the Kemess
Mine.  The Corporation shall deliver opinions of its Counsel in respect of such
matters, in each case within a reasonable time after the request therefor by the
Holder, and in each case in form and substance reasonably satisfactory to the
Holder.


ARTICLE 4 - REPRESENTATIONS AND WARRANTIES

4.1    REPRESENTATIONS AND WARRANTIES BY THE CORPORATION

       The Corporation hereby represents and warrants to the Holder and so long
as this Debenture remains in effect shall be deemed to continuously represent
and warrant as follows and acknowledges that the Holder is relying on such
representations and warranties in connection with its purchase of the Debenture:

       (a)     INCORPORATION AND STATUS OF THE CORPORATION.  The Corporation is
       the successor corporation resulting from the amalgamation on December
       29, 1997 of the former Royal Oak Mines Inc. and Kemess Mines Inc., is
       duly amalgamated and organized under the laws of its jurisdiction of
       incorporation, is in good standing in each jurisdiction where, by reason
       of its business or assets, it is required to be qualified or licensed
       and has, subject to the Materiality Threshold, all powers, licenses,
       franchises and permits required to own its assets and carry on its
       business as the same is presently carried on.

                                       9
<PAGE>

       (b)     POWER AND CAPACITY.  The Corporation has the corporate power to
       enter into each of this Debenture and the other Documents and to do all
       acts and things as are required or contemplated hereunder or thereunder
       to be done, observed and performed by it.

       (c)     DUE AUTHORIZATION, NO CONTRAVENTION.  The entering into and the
       performance by the Corporation of this Debenture, the other Documents
       and the transactions contemplated herein and therein (i) have been duly
       authorized by all necessary corporate action on the part of the
       Corporation and (ii) do not and will not contravene, violate, breach or
       result in any default under the articles, by-laws, constating documents
       or other organizational documents of the Corporation, or any agreement
       to which the Corporation is a party or, subject to the Materiality
       Threshold, any term or provision of any regulatory license or permit or
       any order of any court, governmental authority or regulatory body or any
       law or regulation of any jurisdiction in which the Corporation carries
       on its business.

       (d)     BINDING AGREEMENT.  This Debenture and the other Documents have
       been duly executed and delivered by the Corporation and constitute
       legal, valid and binding obligations enforceable against the Corporation
       in accordance with their terms, subject only to the availability of
       equitable remedies and the effect of bankruptcy, insolvency and similar
       laws affecting the rights of creditors generally.
       
       (e)     NO PROCEEDINGS.  As of the date of execution of this Debenture,
       except as is disclosed in SCHEDULE H and subject to the Materiality
       Threshold there is no material litigation, arbitration or administrative
       proceedings, actions, suits or investigations outstanding, pending or,
       to the Knowledge of the Corporation, threatened against the Corporation
       or any of its properties.  None of the transactions contemplated hereby
       or by the other Documents have been enjoined by any Governmental Body
       and no suit or other proceeding challenging the transactions
       contemplated hereby or by the other Documents has been instituted or, to
       the Knowledge of the Corporation, threatened, and no investigative
       demand on the Corporation or any Subsidiary related to such transactions
       has been made by any Governmental Body and no Governmental Body or
       Person has, to the Knowledge of the Corporation, threatened to take any
       such action.

       (f)     COMPLIANCE WITH APPLICABLE DOCUMENTS AND LAWS.  The Corporation
       is not in violation of, or in default under (and there does not exist
       any event or condition which, after notice or lapse of time or both,
       would constitute such a default under), any term of its articles,
       by-laws, constating documents or other organizational documents, or,
       subject to the Materiality Threshold and other

                                       10
<PAGE>

       than amounts owed to the holders of the Existing Encumbrances, under any
       term of any agreement, instrument, judgment, decree, order, statute, 
       injunction, governmental regulation, rule or ordinance (including, 
       without limitation, those relating to zoning, city planning or similar 
       matters) applicable to the Corporation, or to which the Corporation is 
       bound or which may otherwise be applicable to any property of the 
       Corporation other than as is disclosed in item 11 of SCHEDULE H.

       (g)     NO CONSENTS REQUIRED.  Except as may be expressly set out in
       SCHEDULE J hereto (the "Consents"), there are no consents, permits,
       approvals, confirmations and acknowledgements required in order for the
       Corporation to carry out the transactions contemplated hereby and by the
       Documents, provided that the granting of fixed and specific Liens or
       assignments which the Holder may request following the date hereof
       pursuant to its right to do so hereunder or under the Documents may
       require consents or approval of other Persons so as not to constitute
       events of default under any agreements with such Persons.

       (h)     SHARES.  SCHEDULE E sets out the name and jurisdiction of
       incorporation, continuance or amalgamation of the Corporation and each
       Subsidiary, and SCHEDULE K accurately describes the respective
       authorized and issued share capital as of the date hereof of the
       Corporation and each Material Subsidiary.  Other than as disclosed in
       Section 4.1(i) hereof, there are no shareholders' agreements, pooling
       agreements, voting trusts or other similar agreements with respect to
       the ownership or voting of any of the shares of the Corporation or of
       Material Subsidiaries or pursuant to which any person may have any right
       or claim in connection with any existing or past equity interest in the
       Corporation or such Material Subsidiaries.

       (i)     NO OBLIGATION TO ISSUE SHARES.  Except for (i) agreements,
       options, warrants, rights and conversion or other rights granted to
       current or former directors and employees of the Corporation in respect
       of which no more than 10 million common shares of the Corporation may be
       acquired, (ii) agreements to issue to the Corporation shares of APM
       (which shares when issued will be subject to the Security and all share
       certificates in respect thereof will, at the request of the Holder, be
       delivered to the Holder), (iii) special warrants and common shares which
       may be issued by the Corporation to its creditors, in lieu of partial
       payment to such creditors, and to other Persons, and (iv) 10,000,000
       common shares being issued to the consenting holders of the Subordinated
       Notes, there are no agreements, options, warrants, rights of conversion
       or other rights pursuant to which the Corporation or any of the
       Subsidiaries is or may become obligated to issue any shares or any
       securities convertible into, or exchangeable for, shares.

                                       11
<PAGE>

       (j)     FINANCIAL STATEMENTS.  The Audited Financial Statements and the
       Interim Financial Statements have been prepared in accordance with
       generally accepted accounting principles consistently applied (subject
       to usual year-end adjustments in the case of the Interim Financial
       Statements) and fairly present the financial position of the Corporation
       and the Subsidiaries and the results of their operations at the times
       and for the periods indicated.  The Corporation and each of the
       Subsidiaries has no outstanding liabilities, contingent or otherwise,
       other than those disclosed in the Audited Financial Statements and the
       Interim Financial Statements and other than trade or business
       obligations subsequently incurred in the ordinary course of business,
       which such trade and business obligations are currently in good standing
       in accordance with their respective terms, other than as set forth in
       SCHEDULE L. 

       (k)     PERMITS, COMPLIANCE WITH LAWS.  This section 4.1(k) shall be
       subject to the Materiality Threshold.  The Corporation has all licences,
       permits, approvals and franchises that it requires, or is required to
       have, to own its properties and assets and to carry on its business as
       presently conducted including, without limitation, in respect of the
       construction and development of the Kemess South Mine.  All such
       licences, permits, approvals and franchises are in good standing and,
       except as is disclosed in item 11 of SCHEDULE H, no actions,
       proceedings, investigations or other steps of any kind are in process,
       pending, to the Knowledge of the Corporation threatened, or reasonably
       foreseeable which might result in any such licence, permit, approval or
       franchise being terminated, revoked, withdrawn, suspended or otherwise
       made unavailable to the Corporation for any period of time.  The
       Corporation has applications pending for all additional licences,
       permits, approvals and franchises necessary or desirable for the
       commencement of mining operations at the Kemess Mine in the manner and
       to the full extent contemplated in plans and projections disclosed to
       the Holder (a list of which additional licenses are attached here as
       SCHEDULE M) and has no reason to believe that any or all such additional
       licences, permits, approvals and franchises will not be granted to
       prevent, impair or interfere with the Kemess Mine Production Date
       occurring on or before December 31, 1998.  Except as is disclosed in
       item 11 of SCHEDULE H, the Corporation is conducting its business in
       compliance with all applicable laws, regulations, by-laws and ordinances
       of each jurisdiction in which its business is carried on, including
       without limitation all laws, regulations, by-laws and ordinances
       relating to mining concessions.

       (l)     NO RESTRICTIONS.  Except as may be provided for in agreements
       between the Province of British Columbia and the Corporation respecting
       economic assistance, copies of which have been provided to the Holder,
       the Corporation is not a party to or bound by any agreement which would
       restrict or limit its 

                                       12
<PAGE>

       right to carry on any business or activity or to solicit business from 
       any Person or in any geographical area or otherwise to conduct the 
       business of the Corporation.  The Corporation is not subject to any 
       legislation or any judgment, order or requirement of any court or 
       governmental authority which is not of general application to persons 
       carrying on a business similar to the business of the Corporation.
       
       (m)     LIMITATION ON PAYMENT RESTRICTIONS.  Except for restrictions
       contained herein and in the Subordinated Note Trust Indenture, and
       restrictions in favour of the holders of the Permitted Hedging
       Indebtedness to the extent such restrictions herein and in the
       Subordinated Note Trust Indenture have been agreed to and adopted by the
       Corporation and such holders, neither the Corporation nor any Subsidiary
       is subject to any consensual restriction on its ability (a) to pay
       dividends or make any other distributions on its equity securities to,
       or pay any indebtedness owing to, or repurchase or redeem any equity
       securities from, the holders of such equity securities, the Corporation
       or any other Subsidiary, (b) to make any loans or advances to the
       Corporation or any other Subsidiary, or (c) to transfer any of its
       property or assets to the Corporation or any other Subsidiary.

       (n)     NO MATERIAL ADVERSE CHANGES, DAMAGE OR ACCIDENTS.  Since June 1,
       1998, the Corporation has operated its business diligently and only in
       the ordinary course of business and except for the defaults set out in
       SCHEDULE I (the "Disclosed Defaults"), (which Disclosed Defaults have
       been remedied), and except for the Corporation committing events of
       default pursuant to the Subordinated Note Trust Indenture (which have
       since been cured), there has not been any material adverse change in the
       condition (financial or otherwise), assets, liabilities, affairs,
       business or operations of the Corporation, any substantial loss of or
       damage to the assets of the Corporation, or any accident (subject to the
       Materiality Threshold) relating to the mines, properties or mining
       operations of the Corporation in which any employee of the Corporation
       was injured.  For greater certainty, since June 1, 1998 the Corporation
       has not:

               (i)    incurred any liabilities other than in the ordinary
               course of business consistent with past practice;

               (ii)   sold, encumbered, assigned or transferred any assets or
               properties of the Corporation, other than for fair market value,
               to purchasers at arms length to the Corporation and in the
               ordinary course of business consistent with past practice;

               (iii)  created, incurred, assumed or guaranteed any obligations,
               liabilities or indebtedness except in the ordinary course of
               business 

                                       13
<PAGE>

               consistent with past practice or subjected any of its
               assets to any Lien except for Existing Encumbrances;

               (iv)   changed or amended its governing documents in any
               respect;

               (v)    declared, set aside, paid or made any distributions in
               cash or property on its equity securities including its common
               shares;

               (vi)   directly or indirectly redeemed, purchased or otherwise
               acquired any of its equity securities;

               (vii)  other than the resignations of John May, Matthew
               Gaasenbeek, Michael Lalonde, Nancy Deshaw and Scott Lampe,
               suffered any resignation or termination of employment of any key
               officers or directors or become aware of any impending
               resignation or termination of employment of any such key officers
               or directors;

               (viii) except in the ordinary course of its business, or as
               disclosed in writing to the Holder prior to the date hereof,
               materially increased the compensation payable or to become
               payable to any of its officers or directors or materially
               increased any bonus, insurance, pension or other employee benefit
               plan, payment or arrangement made for or with any such officers
               or directors;

               (ix)   materially changed its accounting methods, principles or
               practices; or

               (x)    entered into any agreement or commitment to do any of the
               things described in this section.

       (o)     NO WORK ORDERS.  Except as is disclosed in item 11 of SCHEDULE H
       and subject to the Materiality Threshold, no work orders, directions or
       notices have been issued pursuant to any applicable law relating to the
       business of the Corporation or any part of the Mortgaged Property or
       relating to or pursuant to any environmental matters affecting the
       foregoing and the Corporation has not received any notification from any
       Governmental Body that any work, repairs, construction or capital
       expenditures are required to be made in respect of the Mortgaged
       Property or any part thereof as a condition of continued compliance with
       any applicable law or any Material Authorizations issued thereunder.

       (p)     NO DEFAULT.  Subject to the Materiality Threshold, the
       Corporation is not in default or breach under any material commitment or
       obligation under the terms and conditions relating to any Material
       Authorizations and there exists 

                                       14
<PAGE>

       no state of facts which, after notice or the passage of time or both, 
       would constitute such a default or breach and there are no proceedings 
       in progress, pending or, to the Knowledge of the Corporation, threatened 
       which may result in the revocation, cancellation, suspension, non-grant 
       or any adverse modification of any Material Authorization except as is 
       disclosed in item 11 of SCHEDULE H. The Corporation has obtained all 
       Material Authorizations necessary or desirable to carry on all 
       activities currently and previously carried on at the Kemess Mine.
       
       (q)     NON-ARM'S LENGTH TRANSACTIONS.  Except as is described in
       employment agreements and correspondence delivered to the Holder prior
       to the date hereof, the Corporation is not a party to any contract,
       commitment or transaction (including by way of loan) with any officer,
       director or shareholder of the Corporation, any of the Subsidiaries, or
       any of their respective affiliates or associates, other than as
       disclosed in the Audited Financial Statements and the Interim Financial
       Statements and other than employment contracts in the ordinary course of
       business.

       (r)     TAX MATTERS.

               (i)    The Corporation has prepared and filed on a timely basis
               with all appropriate Governmental Bodies all returns with respect
               to Taxes and other documents that it is required to file in
               respect of any Taxes for all fiscal periods ending on or prior to
               the date hereof and all such returns or other documents are
               correct and complete in all material respects;

               (ii)   The Corporation has paid in full all Taxes due on or
               before the date hereof and, in the case of Taxes accruing on or
               before the date hereof that are not due on or before the date
               hereof, the Corporation will have made adequate provision in its
               books and records and financial statements for such payment; and
               the Corporation does not have any liability for Taxes other than
               those provided for in the Audited Financial Statements and the
               Interim Financial Statements and those arising subsequently in
               the ordinary course of the operation of its business;

                                       15
<PAGE>

               (iii)  The Corporation has withheld from each payment made to
               any of its present or former employees, officers, directors and
               to all persons who are non-residents of the applicable
               jurisdictions all amounts required pursuant to Applicable Law to
               be withheld or remitted and will continue to do so until the
               Maturity Date and furthermore has remitted such amounts within
               the applicable periods to the appropriate Governmental Body; the
               Corporation has remitted all Canada Pension Plan contributions,
               unemployment insurance premiums, employer health taxes and other
               Taxes payable by it in respect of its employees and has or will
               have remitted such amounts to the appropriate Governmental Body
               within the time required under the applicable legislation; and
               the Corporation has charged, collected and remitted on a timely
               basis all Taxes as required under applicable legislation on any
               sale, supply, or delivery whatsoever, made by the Corporation;

               (iv)   Except for a disputed assessment of fuel taxes payable by
               the Corporation to the government of Canada in the approximate
               amount of Can. $100,000, there are no reassessments of the
               Corporation with respect to Taxes that have been issued and are
               outstanding; no Governmental Body has challenged, disputed or
               questioned the Corporation in respect of Taxes or in respect of
               any returns, filings or other reports filed under any statute
               providing for Taxes; the Corporation has not received any
               indication from any Governmental Body that an assessment or a
               reassessment in respect of the Corporation is proposed; and the
               Corporation has not executed or filed any agreement extending the
               period for assessment, reassessment or collection of any Taxes.

       (s)     NO ENCUMBRANCES.  The Corporation owns and has good and
       marketable title, free and clear of all Liens except Existing
       Encumbrances, to all assets used in connection with its business
       including, without limitation, all assets reflected on the balance sheet
       included in the Audited Financial Statements and the Interim Financial
       Statements or acquired by it after the date of such balance sheet except
       for changes in such assets in the ordinary course of business subsequent
       to that date.  All material operating facilities, equipment and other
       material items of tangible property and assets owned by the Corporation
       are in good operating condition and repair, subject to normal wear and
       maintenance and having regard to their respective ages, are usable in
       the regular and ordinary course of business and conform to all
       Applicable Laws relating to their construction, use and operation,
       except where such failure, individually or in the aggregate, would not
       have a material adverse effect on the Corporation.  The Corporation's
       quarterly report on Form 10-Q for the 

                                       16
<PAGE>

       fiscal quarter ended March 31, 1998 filed with the United States 
       Securities And Exchange Commission pursuant to the Securities Exchange 
       Act of 1934, as amended, contains a complete and accurate description of
       all material property and assets owned by the Corporation.  SCHEDULE N 
       contains a complete and accurate description of all material property 
       and assets owned by the Corporation relating to the Kemess Mine.  
       Subject to the Materiality Threshold, all equipment or other tangible 
       assets or property situated on the premises of the Corporation, or 
       necessary to the operation of the business of the Corporation, which is 
       leased under a capital lease or under a material operating lease is 
       listed in SCHEDULE O.  Subject to the Materiality Threshold, the 
       Corporation is in compliance with all terms of agreements and 
       arrangements governing the leased items listed in SCHEDULE O.

       (t)     MATERIAL INDEBTEDNESS.  SCHEDULE P contains a list of all
       material indebtedness of the Corporation in excess of Can. $1,000,000
       and the identity of the Persons to whom it is owed.  The accounts
       payable of the Corporation listed in SCHEDULE G relate only to the
       construction, development and operation of the Kemess South Mine.

       (u)     SECURITY DOCUMENTS.  The Security Documents and the other
       Documents create a valid and enforceable security interest and Lien upon
       the Mortgaged Property securing the payment and satisfaction of all
       obligations of the Corporation and APM to the Holder.  Such security
       interests are perfected security interests subject to no prior Liens or
       Liens ranking senior in priority to the Liens in favour of the Holder,
       except for such Liens (i) granted pursuant to the Royalty Debenture,
       (ii) relating to or securing Debt of the Corporation not in excess of
       Can. $15,000,000 as may be held by holders of Existing Encumbrances set
       out in Part I of SCHEDULE C1.

       (v)     EMPLOYMENT MATTERS.  Except as is disclosed in SCHEDULE Q, the
       Corporation is not a party to or is not bound by any:

               (i)    written contract or commitment for the employment of any
               employee or officer providing for an annual salary (including
               benefits) of in excess of Can. $200,000 or a payment on
               termination of in excess of six months salary and benefits;

               (ii)   oral contract or commitment for the employment of any
               employee or officer, except for contracts of indefinite hire
               terminable by the Corporation without cause on reasonable notice;

               (iii)  in the case of the Kemess Mine only, contract with or
               commitment to any trade union, council of trade unions, employee

                                       17
<PAGE>

               bargaining agent or affiliated bargaining agent (collectively
               called "labour representatives") and the Corporation has not
               conducted negotiations with respect to any such future contracts
               or commitments; no labour representatives hold bargaining rights
               with respect to any employees of the Corporation relating to the
               Kemess Mine; no labour representatives have applied to have the
               Corporation declared a related employer pursuant to the
               applicable labour legislation; and, to the Knowledge of the
               Corporation, there are no current or threatened attempts to
               organize or establish any trade union or employee association
               with respect to the Kemess Mine project provided, however, that
               the Corporation anticipates that steps may be taken by its
               employees to unionize and negotiate collective bargaining
               agreements for the Kemess Mine at some time in the future; or

               (iv)   except as is disclosed in financial information made
               available to the Holder  prior to the date hereof and subject to
               the Materiality Threshold, bonus, pension, multi-employer, profit
               sharing, deferred compensation, retirement, disability, health
               insurance or similar benefit plan, with respect to any of its
               employees or others (including without limitation any agreements
               in respect of employee share ownership plans), other than Canada
               Pension Plan, the Ontario Health Insurance Plan and other similar
               health plans established and administered by any other
               governmental authority or workers' compensation insurance
               provided pursuant to statute.

       Subject to the Materiality Threshold, there is no work stoppage or other
       concerted action, grievance or dispute existing or, to the Knowledge of
       the Corporation, threatened against the Corporation, and there is no
       material complaint, grievance, claim, work order or investigation that
       has been filed, made, commenced or, to the Knowledge of the Corporation,
       threatened against the Corporation pursuant to any human rights,
       occupational health and safety, workers compensation, employment
       standards or pay equity legislation or any similar legislation of any
       jurisdiction in which the Corporation carries on its business.

       (w)     INTELLECTUAL PROPERTY.  The Corporation owns and has good and
       marketable title, free and clear of all Liens except Existing
       Encumbrances, to the Intellectual Property.  The conduct of the business
       of, and the use of the Intellectual Property by the Corporation does not
       infringe, and the Corporation has not received any notice, complaint,
       threat or claim alleging infringement of, any patent, trade mark, trade
       name, copyright, industrial design, trade secret or other propriety
       right of any other Person.  To the Knowledge of the Corporation, the
       Intellectual Property which is not owned by the Corporation is 

                                       18
<PAGE>

       being used with the consent of, and in accordance with the consent or 
       licence from, the rightful owner thereof.  The Corporation has taken all
       necessary steps to establish, preserve and protect its rights in the
       Intellectual Property which is material to the Corporation.

       (x)     MATERIAL CONTRACTS.  SCHEDULE R contains a list of all agreements
       of the Corporation which are material to the Kemess Mine and which have
       not been fully performed by the parties thereto, including, without
       limitation, agreements which relate to construction underway or proposed
       at the Kemess Mine and including, without limitation, royalty, refining
       and shipping agreements (the "Material Contracts").  SCHEDULE Z contains
       a list of all material agreements of the Corporation relating to the
       construction or development of the Kemess Mine or relating to the supply
       of equipment to the Kemess Mine, which agreements have been performed by
       the parties thereto but the warranty periods in respect of which have
       not yet expired (the "Kemess Mine Construction Contracts").  Subject to
       the Materiality Threshold, and other than amounts owed to holders of the
       Existing Encumbrances, each of the Material Contracts and the Kemess
       Mine Construction Contracts is in full force and effect without
       amendment, and there has been no default under any of them, or under any
       other material commitment or obligation, by the Corporation or, to the
       Knowledge of the Corporation, any other party, nor has any event
       occurred that, with the giving of notice, lapse of time or any other
       condition subsequent, would constitute a default or would otherwise
       allow the termination of any Material Contract or Kemess Mine
       Construction Contract.

       (y)     MINING CONCESSIONS.  SCHEDULES B-1 AND B-2 contain a complete and
       accurate list of all material mining claims, concessions and leases in
       which the Corporation has an interest relating in any way to the Kemess
       Mine, including, without limitation, all mining claims, concessions and
       leases in respect of which the Corporation has any obligation to
       contribute funds or make payments, other than fees or taxes payable in
       the ordinary course under the regulations governing such claims,
       concessions or leases.  The Corporation is the absolute beneficial owner
       of, and has good and marketable title to, such mining claims,
       concessions and leases in accordance with governing laws and
       regulations, free of all Liens except for such rights as may be held by
       Kemess South Resources Limited Partnership as disclosed in item (a) of
       Part II of SCHEDULE C1 to this Debenture and by the holders of the
       Existing Encumbrances.

       (z)     PRICING, HEDGING PROTECTION.  Subject to the Materiality
       Threshold, SCHEDULE S contains a complete and accurate list and
       description of all hedging or related arrangements to which the
       Corporation is a party or by which it is bound including, without
       limitation, forward sale contracts, options, interest 

                                       19
<PAGE>

       rate swap agreements, currency swap agreements, derivative agreements 
       and similar arrangements.  None of the hedging or related arrangements 
       entered into by the Corporation provides for the granting of (i) any 
       Lien against the property, assets and undertaking of the Corporation 
       other than the Permitted Encumbrances described in Section (b) of the 
       definition thereof, or (ii) production advances or any other disposition
       of any property, assets or undertaking of the Corporation in 
       consideration for advance or accelerated payment or other manner of 
       prepayment or payment not contemporaneous with delivery other than for 
       the sales of up to U.S. $10,000,000 of copper concentrate pursuant to 
       the Glencore Agreement.

       (aa)    ENVIRONMENTAL MATTERS.  Except as is disclosed in item 11 of
       SCHEDULE H regarding the sediment concerns at the Kemess South Mine and
       subject to the Materiality Threshold, the Corporation is not in
       violation of any applicable federal, provincial, state, municipal or
       local laws, regulations, orders, governmental decrees or ordinances with
       respect to environmental, health or safety matters (collectively,
       "Environmental Laws") and no actions, proceedings, investigations or
       other steps of any kind are in process, pending, to its Knowledge
       threatened, or reasonably foreseeable with respect to any such existing
       or past violation or alleged violation or other liability whatsoever on
       the part of the Corporation under Environmental Laws.  For greater
       certainty, subject to the same qualifications and without limiting the
       generality of the foregoing:

               (i)    the Corporation has carried on its business and at all
               times has received, handled, used, stored, treated, shipped and
               disposed at all times of all contaminants in compliance with all
               Environmental Laws;

               (ii)   there have been no releases, deposits or discharges, in
               violation of Environmental Laws, of any hazardous or toxic
               substances, materials, pollutants, contaminants or wastes into
               the earth, air or into any river, stream, lake or other body of
               water or into any municipal or other sewer or drain water
               systems;

               (iii)  no orders, directions or notices have been issued
               pursuant to any Environmental Laws relating to the business or
               assets of the Corporation; and

               (iv)   the Corporation has not failed to report to the proper
               Governmental Body the occurrence of any event which is required
               to be so reported by any Environmental Laws.

       (bb)    PLACES OF BUSINESS.  The registered office of the Corporation is
       situated 

                                       20
<PAGE>

       at BCE Place, P.O. Box 747, Suite 2500, 181 Bay Street, Toronto, 
       Ontario, Canada M5J 2T7, and the chief executive office of the 
       Corporation is situated at 5501 Lakeview Drive, Kirkland, Washington, 
       U.S.A. 98033.

       (cc)    ALL MATERIAL INFORMATION SUPPLIED.  The Corporation has provided
       to the Holder all material information relating to the financial
       condition, business and prospects of the Corporation and all information
       provided to the Holder is true, accurate and complete in all material
       respects and omits no material fact necessary to make such information
       not misleading provided, however, that the Corporation is not
       representing and warranting that the financial and operating projections
       made by it will accurately correspond to actual future results
       notwithstanding that they are based on the best information currently
       available to the Corporation.  For greater certainty, all documents
       provided to the Holder in the course of investigating, negotiating and
       preparing the Documents and the property, assets and affairs of the
       Corporation are complete and, subject to the proviso in the immediately
       preceding sentence, accurate in every respect and copies of all such
       documents provided to the Holder conform in every respect to the
       originals thereof.

       (dd)    DEBENTURE COVENANTS.  No event or circumstance has occurred or
       exists which is inconsistent with the covenants and agreements of the
       Corporation set out in this Debenture or which would, immediately or
       with the passage of time or giving of notice or taking of any other
       prerequisite step, constitute a Default or Event of Default hereunder.

       (ee)    SUBORDINATED NOTES.  The Corporation is, and will after giving
       effect to the transactions contemplated by this Debenture and the other
       Documents be, in compliance with all terms and conditions and agreements
       applicable to the Subordinated Notes.  The indebtedness under the
       Debenture will fully constitute "Permitted Indebtedness" and the
       Security will in every respect constitute "Permitted Liens" under the
       Subordinated Note Trust Indenture.  The indebtedness under the
       Debentures and the amounts if any from time to time outstanding on
       account of the Royalty Agreement constitute "Senior Indebtedness" under
       the Subordinated Note Indenture.  The indebtedness under the Debentures
       constitute "Designated Senior Indebtedness" under the Subordinated Note
       Indenture.  The indebtedness of any Subsidiary under or on account of
       the Debentures constitute "Guarantor Senior Indebtedness" under the
       Subordinated Note Indenture.  The Lender is entitled to the benefit of
       and can rely on the provisions of the Subordinated Note Indenture
       relating to "Senior Indebtedness", "Designated Senior Indebtedness" and
       "Guarantor Senior Indebtedness" and the holder of the royalty pursuant
       to the Royalty Agreement is entitled to the benefit of and can rely on
       the provisions of the Subordinated Note Indenture relating to "Senior
       Indebtedness" to the extent of 

                                       21
<PAGE>

       the amounts if any from time to time outstanding on account of the 
       Royalty Agreement.  Each of the Lenders and the holder of the royalty 
       pursuant to the Royalty Agreement, to the extent of the amounts if any 
       from time to time outstanding on account of the Royalty Agreement, can 
       enforce such provisions as are applicable to it directly against the 
       Corporation and any other Subsidiary.  The Corporation has delivered to 
       the Holder complete and accurate copies of all agreements and documents 
       relating to the Subordinated Notes including, without limitation, the 
       Subordinated Note Trust Indenture. The Subordinated Notes are, in 
       accordance with their terms, fully subordinated and postponed to the 
       obligations of the Corpoation to the Holder under the Documents, which 
       obligations constitute "Senior Indebtedness" under the Subordinated Note 
       Trust Indenture.

       (ff)    SUBSIDIARIES OF THE CORPORATION.  SCHEDULE E contains a list of
       all of the Subsidiaries of the Corporation, including the jurisdiction
       of incorporation, continuance and amalgamation for each such Subsidiary.

       (gg)    PROVINCIAL ECONOMIC ASSISTANCE.  The Province of British Columbia
       has unconditionally and irrevocably advanced to the Corporation
       approximately Can. $154,000,000 of the previously committed economic
       assistance, compensation and investment.  All such economic assistance,
       compensation and investment is completely and accurately described in
       SCHEDULE T and the Holder has been provided with true, complete and
       accurate copies of all agreements and other documents relating thereto. 
       Except for annual payments of Can. $1,000,000 for each of the 12
       successive years commencing in 1999, both as identified in SCHEDULE T,
       there are no further outstanding commitments of economic assistance,
       compensation or investment which remain to be completed and there are no
       commitments, agreements or arrangements with any Governmental Body which
       would be breached or otherwise adversely impacted by the transactions
       contemplated by the Documents or which could in any way preclude,
       hinder, prejudice or delay the exercise of the Holder's rights and
       remedies hereunder and thereunder.

       (hh)    WINDY CRAGGY PROPERTY.  The inability of the Corporation to incur
       expenditures on and maintain in good standing the Windy Craggy Property
       will not result in: (i) any diminution in the amounts of payments from
       the government of British Columbia pursuant to the agreement of June 27,
       1997; (ii) revocation of any permits issued by the government of British
       Columbia in connection with the Kemess Mine; or (iii) any material
       adverse effect on the ability of the Corporation to conduct mining
       operations at, and to maintain good title to, the Kemess Mine; and the
       Windy Craggy Property does not include or in any way comprise the
       property and assets comprising the Kemess Mine.

                                     22
<PAGE>

       (ii)    BANKS.  SCHEDULE T1 lists particulars, including bank, branch 
       address, account type and account number, of each bank account 
       maintained by the Corporation and by each of the Subsidiaries.

4.2    SURVIVAL OF REPRESENTATIONS AND WARRANTIES BY THE CORPORATION

       The representations and warranties made by the Corporation pursuant to 
Section 4.1 hereof will survive the closing of the issuance of this Debenture 
and the other transactions provided for herein and, notwithstanding such 
closing or any investigation made by or on behalf of the Holder or any other 
person or any knowledge of the Holder or any other person, shall continue in 
full force and effect for the benefit of the Holder.

ARTICLE 5 -    COVENANTS

5.1    AFFIRMATIVE COVENANTS

       So long as the Debenture or any obligation of the Corporation to the 
Holder under the Debenture or any other Document remains outstanding, the 
Corporation covenants and agrees with the Holder that:

       (a)     PUNCTUAL PAYMENT AND PERFORMANCE OF DEBENTURE.  The 
       Corporation shall pay or cause to be paid all amounts payable to the 
       Holder hereunder and under the other Documents on the dates and in the 
       manner specified therein and the Corporation shall perform and carry 
       out all of the acts or things to be done by the Corporation as 
       provided in the Debenture and the other Documents;

       (b)     CONDUCT OF BUSINESS.  The Corporation shall do or cause to be 
       done all things necessary to maintain its corporate existence in its 
       present jurisdiction of incorporation and to maintain its corporate 
       power and capacity to own its properties and assets;

       (c)     PRESERVATION OF MATERIAL AUTHORIZATIONS.  The Corporation and 
       each Material Subsidiary shall preserve and maintain all Material 
       Authorizations including, without limitation, all licenses, permits, 
       approvals and franchises necessary or desirable to carry on mining 
       operations at the Kemess Mine in the manner and to the full extent 
       contemplated in plans and projections disclosed to the Holder.

       (d)     PRESERVATION OF MINING CLAIMS, CONCESSIONS AND LEASES.  The

                                       23
<PAGE>

       Corporation shall preserve and maintain:  (i) all mining claims 
       subject to the Materiality Threshold, and all concessions and leases 
       necessary or desirable to carry on mining operations at the Kemess 
       Mine in the manner and to the full extent contemplated in plans and 
       projections disclosed to the Holder, and (ii) subject to the 
       Materiality Threshold, all other material mining claims, concessions 
       and leases.

       (e)     COMPLIANCE WITH APPLICABLE LAW AND CONTRACTS.  The Corporation 
       and each Material Subsidiary shall comply with:  (i) the requirements 
       of all Applicable Laws; (ii) all obligations which, if contravened, 
       could give rise to a Lien (other than Permitted Encumbrances) over any 
       of its property; and (iii) all insurance policies and all contracts to 
       which the Corporation or such Material Subsidiary is a party or by 
       which it or its properties are bound, non-compliance with which would, 
       singly or in the aggregate, have a material adverse effect upon the 
       business, property or financial condition of the Corporation or such 
       Material Subsidiary or upon its ability to perform its obligations 
       under this Debenture or any of the other Documents;

       (f)     INSURANCE.  The Corporation and each Material Subsidiary shall:

               (i)    keep its properties and assets insured with reputable 
               insurers, in amounts not less than the replacement cost 
               thereof and against such losses as are insured against by 
               comparable corporations engaged in comparable businesses or 
               which the Holder may reasonably require including without 
               limitation, if requested by the Holder acting reasonably, 
               sudden and accidental pollution liability insurance;

               (ii)   maintain public liability insurance in such amounts and 
               against such risks as is normally carried by comparable 
               corporations engaged in comparable businesses or which the 
               Holder may reasonably require;

               (iii)  provide the Holder with certificates for all insurance 
               policies; and 

               (iv)   provide that any loss under all such insurance policies 
               (other than policies in respect of third party liability and 
               business interruption insurance) in excess of Can. $500,000 
               shall be payable to the Holder subject only to any prior 
               rights which may be specifically held in such proceeds by the 
               holders of Permitted Encumbrances, provided that if a Default 
               or Event of Default has not occurred, the Corporation or such 
               Material Subsidiary shall, provided prior notice thereof shall 
               have been given to the Holder, be entitled to receive such 
               loss payment directly if the entire amount thereof is:

                                       24
<PAGE>

                      (A)     used to repair or replace the lost or damaged 
                      property in question if the lost or damaged property 
                      relates to the Kemess Mine; or

                      (B)     if the lost or damaged property does not in any 
                      way relate to the Kemess Mine either (x) used to repair 
                      or replace the lost or damaged property in question or 
                      (y) after applying such loss payment or a portion 
                      thereof to the reasonable costs of any required 
                      remediation of the lost or damaged property, used and 
                      distributed as the proceeds of a "Sale" pursuant to and 
                      in accordance with Section 5.3(e) hereof;

       (g)     ACCOUNTING METHODS AND FINANCIAL RECORDS.  The Corporation 
       shall, and shall cause each of its Subsidiaries to, maintain a system 
       of accounting which is established and administered in accordance with 
       generally accepted accounting principles and keep adequate records and 
       books of account in which accurate and complete entries shall be made 
       in accordance with such accounting principles reflecting all 
       transactions required to be reflected by such accounting principles; 

       (h)     MAINTENANCE OF MORTGAGED PROPERTY.  The Corporation shall 
       maintain the Mortgaged Property comprising the Kemess Mine and all 
       other Mortgaged Property used by the Corporation or a Material 
       Subsidiary from time to time in good repair, working order and 
       condition (reasonable wear and tear excepted) and from time to time 
       make or cause to be made all necessary and appropriate repairs, 
       renewals, replacements, additions and improvements thereto;

       (i)     PAYMENT OF TAXES AND CLAIMS.  The Corporation and each 
       Material Subsidiary shall:

               (i)    pay and discharge all lawful claims for labour, 
               material and supplies;

               (ii)   pay and discharge all Taxes payable by it; 

               (iii)  withhold and collect all Taxes required to be withheld 
               and collected by it and remit such Taxes to the appropriate 
               Government Body at the time and in the manner required; and 

               (iv)   pay and discharge all obligations incidental to any 
               trust imposed upon it by statute which, if unpaid, might 
               become a Lien upon any of the Mortgaged Property; 

                                       25
<PAGE>

       (j)     INSPECTIONS.  The Corporation and each Material Subsidiary 
       shall permit the Holder and its authorized employees, representatives 
       and agents to:  (i) visit and inspect its properties during normal 
       business hours, (ii) inspect and make extracts from and copies of its 
       books and records, and (iii) discuss with its senior management its 
       businesses, property, financial condition and prospects, all on a 
       reasonable basis and frequency;

       (k)     NOTICE OF LITIGATION AND OTHER MATTERS.  The Corporation 
       shall, as soon as practicable after it shall become aware of the same, 
       give notice to the Holder of the following events:

               (i)    the commencement or threat of a material nature of any 
               action, proceeding, arbitration or investigation against or in 
               any other way relating adversely to the Corporation or the 
               Subsidiaries or any of their respective properties, assets or 
               businesses which, if adversely determined, would singly or 
               when aggregated with all other such actions, proceedings, 
               arbitrations and investigations have a material adverse effect 
               on the business, property or financial condition of the 
               Corporation or on the ability of the Corporation to perform 
               its obligations under this Debenture or any of the other 
               Documents; 

               (ii)   any amendment of its articles, by-laws or other 
               organizational documents; 

               (iii)  any actual or threatened revocation, termination, 
               modification, amendment, substitution, issuance or other 
               material event relating to Material Authorizations or to 
               mining claims, concessions or leases respecting the Kemess 
               Mine and, following any such event, the Corporation shall at 
               the request of the Holder use its best efforts to obtain from 
               the appropriate Governmental Body or other Persons such 
               consents, approvals, acknowledgements or other documents as 
               the Holder may consider necessary, acting reasonably, to 
               ensure that the Holder has valid and enforceable first 
               priority Liens on all such Material Authorizations, mining 
               claims, concessions or leases and may avail itself of the 
               rights and privileges of the Corporation thereunder and assign 
               such rights and privileges should the Holder enforce its 
               rights and remedies in respect of the Security and the other 
               Documents;

               (iv)   any development which has had or will have a material 
               adverse effect upon its business, property or financial 
               condition or its ability to perform its obligations under this 
               Debenture or any of the other Documents or which should 
               reasonably be expected to be of material interest to the 
               Holder, other than any changes in the market prices of 

                                       26
<PAGE>

               gold or copper or changes in the Can. $/U.S.$ currency 
               exchange rate;

               (v)    any development which would lead the Corporation to 
               reasonably believe that the Kemess Mine Production Date will 
               not be on or before December 31, 1998;

               (vi)   any Default or Event of Default; and

               (vii)  any default or event of default, or the occurrence or 
               non-occurrence of any event which constitutes, or which with 
               the passage of time or giving of notice or both would 
               constitute, a material default under any other agreement to 
               which the Corporation or any Subsidiary is a party or by which 
               they or any of their properties may be bound which has a 
               material adverse effect on the business, property or financial 
               condition of the Corporation or its ability to perform its 
               obligations under this Debenture or any other Document; 

       giving in each case the details thereof and specifying the action 
       proposed to be taken with respect thereto.

       (l)     QUARTERLY CASHFLOW STATEMENTS.  On or prior to the date hereof 
       and on the 25th day following the end of each calendar quarter 
       thereafter the Corporation shall deliver to the Holder in form and 
       substance acceptable to the Holder a cashflow statement on a line item 
       basis for the ensuing twelve (12) month period, all in such detail as 
       the Holder may reasonably require.

       (m)     MONTHLY FINANCIAL STATEMENTS.  The Corporation shall, as soon 
       as practicable and in any event within 25 days after the end of each 
       month, deliver to the Holder the monthly unaudited consolidated 
       financial statements of the Corporation for the previous monthly 
       period including in each case a balance sheet, statement of profit and 
       loss and a statement of changes in financial position, together with 
       comparative figures for the corresponding month in the previous 
       Financial Year;

       (n)     INTERIM FINANCIAL STATEMENTS.  The Corporation shall, as soon 
       as practicable and in any event within 60 days after the end of each 
       of the first three Financial Quarters of each Financial Year, deliver 
       to the Holder the interim unaudited consolidated financial statements 
       of the Corporation and, at the request of the Holder, interim 
       unaudited unconsolidated financial statements of the Corporation and 
       of the Subsidiaries, including in each case a balance sheet, statement 
       of profit and loss and a statement of changes in financial position, 
       together with comparative figures for the corresponding period in the 
       previous Financial Year;

                                       27
<PAGE>

       (o)     ANNUAL FINANCIAL STATEMENTS.  The Corporation shall, as soon 
       as practicable and in any event within 120 days after the end of each 
       Financial Year, deliver to the Holder the annual audited consolidated 
       financial statements of the Corporation and, at the request of the 
       Holder, annual unaudited unconsolidated financial statements of the 
       Corporation and of each Subsidiary including in each case a balance 
       sheet, statement of profit and loss, a statement of changes in 
       financial position and a statement of retained earnings, together with 
       comparative figures for the previous Financial Year;

       (p)     OFFICER'S CERTIFICATE.  The Corporation shall deliver to the 
       Holder, together with the financial statements referred to in Sections 
       5.1(l), (n) and (o), an officers' certificate certifying (i) that such 
       financial statements were prepared in accordance with generally 
       accepted accounting principles (subject to normal year-end adjustments 
       in the case of interim unaudited financial statements) and fairly 
       present the financial condition of the Corporation and the other 
       Subsidiaries and the financial information presented therein for the 
       period and as at the date thereof, (ii) that no Default or Event of 
       Default has occurred hereunder or, if any Default or Event of Default 
       has occurred, specifying the relevant particulars and the period of 
       existence thereof and the action taken or proposed to be taken by the 
       Corporation with respect thereto, and (iii) demonstrating in 
       reasonable detail compliance (or, as the case may be, non-compliance) 
       with the covenants contained in Section 5.1(t);

       (q)     PUBLIC AND OTHER INFORMATION.  The Corporation shall from time 
       to time deliver to the Holder copies of all reports, financial 
       statements, information or proxy circulars and other information or 
       notices sent by the Corporation (i) to its shareholders at the same 
       time as the Corporation sends such material to its shareholders, and 
       (ii) pursuant to the Subordinated Note Trust Indenture at the same 
       time as Corporation sends such material to the recipient thereof, and 
       (iii) the Corporation shall deliver to the Holder copies of all press 
       releases, material change reports and similar disclosures filed by the 
       Corporation with any securities regulatory authority or stock 
       exchange, provided that, if any such reports or disclosures under this 
       paragraph (iii) are filed on a confidential basis, then the 
       Corporation shall not be required to deliver the same to the Holder 
       until such time as they are no longer filed on a confidential basis;

       (r)     CHANGE OF CONTROL.  The Corporation shall immediately notify 
       the Holder in the event of a Change of Control of the Corporation;

       (s)     OTHER INFORMATION.  The Corporation shall furnish to the 
       Holder, as soon as practicable following a request therefor from the 
       Holder, such other information as the Holder may reasonably request 
       from time to time;

                                       28
<PAGE>

       (t)     FINANCIAL COVENANTS.  The Corporation shall ensure that:

               (i)    EBITDA shall not be less than:

                      (A)     for the Financial Quarter ending March 31, 
                      1999, Can. $9,000,000;

                      (B)     for the two Financial Quarters ending June 30, 
                      1999, Can. $18,000,000;

                      (C)     for the three Financial Quarters ending 
                      September 30, 1999, Can. $27,000,000; and 

               (ii)   following September 30, 1999, Can. $36,000,000 as at 
               the end of each Financial Quarter and calculated in each case 
               for the preceding 12 months;

       (u)     KEMESS MINE PRODUCTION DATE.  The Corporation shall keep the 
       Holder informed as to the progress of the construction, development 
       and operation of the Kemess South Mine and when the Kemess Mine 
       Production Date has occurred and shall deliver to the Holder a 
       certificate (together with reasonable backup) of a senior officer to 
       that effect; 

       (v)     PAMOUR MINE AND NIGHTHAWK LAKE MINE  The Corporation shall, 
       and shall cause each Subsidiary, as required to, forthwith following a 
       request therefor from the Holder and at the expense of the Corporation 
       deliver to the Holder valid and enforceable first priority Liens 
       against the Pamour Mine and the Nighthawk Lake Mine all in form and 
       substance satisfactory to the Holder and its Counsel together with 
       legal opinions in form and content, and from legal counsel, 
       satisfactory to the Holder regarding the validity, enforceability and 
       priority of such Liens and regarding such other matters as the Holder 
       may require to evidence compliance with the terms of this Debenture; 
       provided that the Holder may only request such Liens at a time that 
       the aggregate amount then outstanding under the Debentures (including 
       principal and accrued interest and unpaid fees and expenses) exceeds 
       U.S.$60,000,000; and

       (w)     PROPOSED LEASEBACK ASSETS.   The Corporation will pay or cause 
       to be paid all amounts payable to Trilon Bancorp Inc. pursuant to an 
       equipment lease dated April 6, 1998 between the Corporation and Trilon 
       Bancorp Inc. (Lease Number L-RY001) on the dates and in the manner 
       specified therein and the Corporation will comply with, perform and 
       carry out all of its obligations provided under such equipment lease.

                                       29
<PAGE>

       (x)     PERMITTED PAYMENTS SECURITY.   The Corporation will provide 10 
       days prior written notice to the Holder of any proposed Permitted 
       Payments together with detailed particulars of the Permitted Payments. 
       The Corporation will provide or cause to be provided to the Holder 
       prior to or contemporaneous with the making of any such Permitted 
       Payments:

               (i)    a guarantee from each Subsidiary receiving such 
               Permitted Payments pursuant to which the Subsidiary guarantees 
               to the Holder all of the obligations of the Corporation to the 
               Holder;

               (ii)   such agreements, conveyances, deeds and other documents 
               and instruments as the Holder shall reasonably request in 
               furtherance of granting to the Holder valid and enforceable 
               first priority Liens on all of the present and after acquired 
               property, undertaking and assets of each Subsidiary receiving 
               such Permitted Payments and the Corporation shall at the 
               expense of the Corporation register, file or record the same 
               (or a notice or financing statement in respect thereof) in all 
               offices where such registration, filing or recording is, in 
               the opinion of the Holder, necessary or advisable to 
               constitute, perfect and maintain such Liens in all 
               jurisdictions reasonably required by the Holder, subject only 
               to Permitted Encumbrances, provided that (subject always to 
               the provisions of Section 5.1(v)) the Corporation shall not be 
               obligated to register the Security against any real property 
               or mineral claims comprising the Pamour Mine, the Nighthawk 
               Lake Mine and the mines generally known as Giant, Hope Brook 
               and Colomac, and the Corporation's currently existing 
               exploration properties not in any way relating to the Kemess 
               Mine; and 

               (iii)  legal opinions in form and content, and from legal 
               counsel, satisfactory to the Holder regarding the validity, 
               enforceability and priority of all Liens created by such 
               Security Documents and regarding such other matters as the 
               Holder may require to evidence compliance with the terms of 
               this Debenture and the other Documents.

5.2    HOLDER'S RIGHT TO DECLINE TO RECEIVE INFORMATION

       Notwithstanding the obligations of the Corporation to provide the 
notices, documents and information referred to in Sections 5.1(k), (l), (m), 
(n), (o), (p) and (u), the Holder shall be entitled to decline to receive any 
or all such notices, documents and information by giving written notice 
thereof to the Corporation.  In the event the Holder gives any such notice to 
the Corporation, the Corporation shall withhold the 

                                       30
<PAGE>

notices, documents and information expressly stated in the written notice of 
the Holder for such periods of time and on such terms as the Holder may 
direct.  The Holder may at any time supplement, revoke or otherwise change 
its directions to the Corporation under this Section 5.2 by further written 
notice to the Corporation. Nothing in this Section 5.2 or in any written 
notice given by the Holder hereunder in any way reduces or otherwise affects 
the obligation of the Corporation to provide to the Holder the information 
referred to in Sections 5.1(q) and (r).

5.3    NEGATIVE COVENANTS

       So long as this Debenture or any obligations of the Corporation under 
this Debenture or any other Document remain outstanding, the Corporation 
covenants and agrees that without the prior written consent of the Holder 
neither the Corporation nor any Material Subsidiary shall:

       (a)     ENCUMBER PROPERTY.  Create, grant, assume or suffer to exist 
       any Lien upon any of its properties or assets other than Permitted 
       Encumbrances;

       (b)     LOANS AND INVESTMENTS.  Except for (i) loans by the 
       Corporation and APM to existing employees not at any time exceeding in 
       the aggregate U.S. $2,250,000 and loans by the Corporation and APM to 
       new employees employed after the date hereof not at any time exceeding 
       in the aggregate U.S. $750,000, (ii) APM Transactions, (iii) payments 
       of up to Can. $1,500,000 in the aggregate made by the Corporation to 
       purchase shares in the capital of Asia Minerals Corp. and of Highwood 
       Resources Ltd., and (iv) Permitted Payments, make any loans to, or 
       acquire or invest in any securities issued by, any Person other than 
       currently existing loans by the Corporation to any Subsidiaries of 
       which notice in writing has been provided to the Holder;

       (c)     NON-ARM'S LENGTH TRANSACTIONS.  Except for (i) loans by the 
       Corporation and APM to existing employees not at any time exceeding in 
       the aggregate U.S. $2,250,000 and loans by the Corporation and APM to 
       new employees employed after the date hereof not at any time exceeding 
       in the aggregate U.S. $750,000, (ii) APM Transactions, (iii) the 
       acquisition by the Corporation of the Mikwam Property from Highwood 
       Resources Ltd. on the terms disclosed to the Holder in writing prior 
       to the date hereof, (iv) the sale by the Corporation of the 
       Copperstone Property to a purchaser not dealing at arm's length to the 
       Corporation, and (v) Permitted Payments, repay any indebtedness or 
       liabilities owed to, transfer assets to, purchase assets from, lease 
       property to or from, pay any monies to, guarantee Debt of, provide 
       other financial assistance to, or otherwise enter into any transaction 
       or agreement to do any of the foregoing (other than as may be 
       expressly contemplated by the Documents) with or in respect of any 
       Affiliate (or any corporation which, after the transaction in 

                                       31
<PAGE>

       question becomes effective, would become an Affiliate) or with any 
       officer, director, employee, shareholder or other related Person of 
       the Corporation or any Subsidiary, provided that if the Corporation 
       has not committed an Event of Default, the Corporation may pay 
       ordinary course compensation to officers, directors and employees 
       consistent with past practice and additional ordinary course 
       compensation under the Corporation's head office employee plans, in an 
       aggregate amount not exceeding U.S.$5,000,000 in any Financial Year.  

       (d)     RESTRICTED DISTRIBUTIONS.  Except for APM Transactions and 
       Permitted Payments, declare, pay or make any dividend or other 
       distribution on any shares in its capital or purchase, redeem, retire, 
       cancel or acquire (i) any shares in the capital of the Corporation or 
       any Subsidiary (except shares acquired upon the conversion thereof 
       into other shares in its capital), (ii) any option, warrant or other 
       right to acquire shares in the capital of the Corporation or any 
       Subsidiary, or (iii) any debt or equity security of the Corporation or 
       any Subsidiary, provided that the Corporation shall be entitled to 
       declare and pay stock dividends and to wind-up Witteck Development 
       Inc. and transfer to the Corporation all the property and assets of 
       Witteck Development Inc.;

       (e)     DISPOSITION OF ASSETS.  Except for Permitted Payments, sell, 
       lease, consign or otherwise dispose of or agree to sell, lease, 
       consign or otherwise dispose of, any assets or property.  
       Notwithstanding the foregoing so long as no Default or Event of 
       Default has occurred or would occur as a result of any such sale, 
       lease, consignment or other disposition (collectively a "Sale"):

               (i)    at any time prior to the Kemess Mine Production Date, 
               assets of the Corporation, other than assets which comprise or 
               are in any way material to the Kemess Mine, may be sold by the 
               Corporation for proceeds equal to their fair market value to 
               purchasers dealing at arm's length with the Corporation 
               provided that:

                      (a)     if the proceeds from all such Sales in the 
                              aggregate are equal to or less than Can. 
                              $15,000,000, such proceeds shall be used solely 
                              for prepayments of principal hereunder in 
                              accordance with the provisions of Section 2.4 
                              hereof, regular debt service payments pursuant 
                              to the Subordinated Notes, payment of capital 
                              and non-capital expenses of the Corporation in 
                              connection with the construction, development 
                              and operation of Kemess Mine and/or general 
                              corporate purposes; and

                      (b)     if the proceeds from all such Sales in the 
                              aggregate exceed Can. $15,000,000, such excess 
                              proceeds shall be used 

                                       32
<PAGE>

                              solely for prepayments of principal hereunder 
                              in accordance with the provisions of Section 
                              2.4 hereof and/or for payment of capital and 
                              non-capital expenses of the Corporation in 
                              connection with the construction, development 
                              and operation of the Kemess Mine;

               (ii)   at any time following the Kemess Mine Production Date, 
               provided that EBITDA of the Corporation for the consecutive 
               three (3) calendar month period immediately prior to the date 
               of such Sale is Can. $9,000,000 or more, assets of the 
               Corporation, other than assets which comprise or are in any 
               way material to the Kemess Mine, may be sold by the 
               Corporation at fair market value to purchasers dealing at 
               arm's length to the Corporation and the proceeds of such Sales 
               may be used for general corporate purposes of the Corporation; 
               and

               (iii)  at any time, assets of the Corporation which comprise 
               or were in any way material to the Kemess Mine but which fall 
               below the Materiality Threshold as a result of them being or 
               becoming obsolete or redundant, provided that if saleable they 
               are sold or disposed of by the Corporation for proceeds equal 
               to their fair market value to purchasers at arm's length with 
               the Corporation and the proceeds of such Sale are used in 
               connection with the construction, development and operation of 
               the Kemess Mine.

       In addition to the foregoing, and notwithstanding the Security, the 
       Corporation may without the consent of the Holder at any time prior to 
       the occurrence of a Default or Event of Default sell:

               (iv)   the Proposed Leaseback Assets for cash consideration as 
               part of an operating leaseback agreement or as part of an 
               agreement comprising an Eligible Capital Lease Obligation and 
               Purchase Money Security Interest;

               (v)     the Corporation's interest in the Copperstone Property 
               to a purchaser not dealing at arm's length to the Corporation 
               for consideration of shares in or a royalty interest from the 
               purchaser thereof; and

               (vi)   the Corporation's interest in the Mikwam Property to a 
               purchaser not dealing at arm's length to the Corporation for 
               consideration of shares in or a royalty interest from the 
               purchaser thereof;

                                       33
<PAGE>

provided, in such cases, that the transaction is with an arm's length Person 
(or to a non-arm's length Person but on arm's-length terms in the case of a 
Sale of the Copperstone Property and the Mikwam Property) and on reasonable 
commercial terms and that the proceeds of disposition become immediately 
subject to the Liens in favour of the Holder created pursuant to the Security 
Documents. In the event of any disposition or sale referred to in the 
immediately preceding sentence, the Holder will deliver such acknowledgements 
and discharges of the Security as the Corporation may reasonably request for 
the purpose of giving effect to such sale rights on the part of the 
Corporation.  

       (f)     DEBT.  Create, incur, assume or suffer to exist, contingently 
       or otherwise, Debt other than Permitted Debt.

       (g)     REPAYMENT OF DEBT.  Pay any principal, interest, fees or any 
       other amounts in respect of Debt other than Permitted Payments and 
       other than, if no Default or Event of Default has occurred:

               (i)    payments of interest on the Subordinated Notes 
               ordinarily due and payable in accordance with the terms and 
               conditions contained in the Subordinated Note Trust Indenture; 
               and

               (ii)   other amounts ordinarily due and payable in respect of 
               Permitted Debt provided that such payments shall not be 
               inconsistent with the terms and conditions of applicable 
               documents provided to the Holder prior to the date hereof.

       (h)     GUARANTEES.  Other than as may constitute Permitted Debt, 
       guarantee, give financial assistance to or render itself liable in any 
       manner whatsoever, directly or indirectly, conditionally or otherwise 
       for any Debt or obligation whatsoever of a third party.

       (i)     AMALGAMATIONS, ETC.  Enter into any transaction (including by 
       way of reorganization, consolidation, amalgamation, merger, 
       reconstruction, liquidation, transfer, sale, lease or otherwise) 
       whereby all or any material portion or significant operating division 
       of the undertaking, property and assets of the Corporation or a 
       Material Subsidiary would become the property of any other Person or, 
       in the case of any such amalgamation, of the continuing corporation 
       resulting therefrom without the Holder's prior written consent, 
       provided that the Holder will provide its consent if the Holder, 
       acting reasonably, determines that such transaction will not impair or 
       prejudice the ability of the Corporation or the Material Subsidiaries 
       to pay the indebtedness owing hereunder, to perform its covenants 
       hereunder or impair or prejudice the Holder's Security.

                                       34
<PAGE>


       (j)     CHANGE IN BUSINESS.  (i) Enter into any contract, agreement or
       commitment out of the ordinary course of its business or (ii) acquire or
       establish any business unrelated to the current business of the
       Corporation or (iii) make any material change in, or terminate or
       suspend (other than in the ordinary course of its operations) any
       material part of, the construction, development and operation of the
       Kemess South Mine.

       (k)     PRICING, HEDGING PROTECTION.  Enter into any hedging or related
       arrangements (including, without limitation, forward sale contracts,
       options, currency swap agreements, interest swap agreements, and similar
       arrangements) which provide for (i) the granting of any Lien against the
       property, assets and undertaking of the Corporation or a Material
       Subsidiary other than Permitted Encumbrances or (ii) production advances
       or any other disposition of any property, assets or undertaking of the
       Corporation or a Material Subsidiary in consideration for advance or
       accelerated payment or other manner of prepayment or payment not
       contemporaneous with delivery, other than the sales by the Corporation
       of not more than U.S. $10,000,000 of copper concentrate pursuant to the
       Glencore Agreement.

       (l)     ENVIRONMENTAL MATTERS

               (i)    The Corporation shall maintain, and shall cause each of
               the Subsidiaries to maintain, a system to assure and monitor
               continued compliance with all Applicable Laws relating to the
               environment, which system shall include periodic reviews of such
               compliance.

               (ii)   Subject to the Materiality Threshold, if the Corporation
               or any Subsidiary (a) receives written notice that any violation
               of any Applicable Law relating to the environment may have been
               committed or is about to be committed by it, (b) receives written
               notice that any administrative or judicial complaint or order has
               been filed or is about to be filed against it alleging violations
               of any Applicable Law relating to the environment or requiring it
               to take any action in connection with the release of Hazardous
               Substances into the environment, or (c) receives any written
               notice from a Governmental Body or other Person alleging that it
               may be liable or responsible for costs associated with a response
               to or clean-up of a release of a Hazardous Substance into the
               environment or any damages caused thereby, the Corporation or
               Subsidiary, as the case may be, shall provide the Holder with a
               copy of such notice within ten days of receipt thereof. Subject
               to the Materiality Threshold, the Corporation or Subsidiary, as
               the case may be, shall also provide to the Holder, as soon as
               practicable after it becomes


                                       35
<PAGE>


               available, a copy of any environmental site assessment or audit
               report required to be submitted to any Governmental Body.

               (iii)  The Corporation shall indemnify the Holder and its
               officers, directors, employees, agents and shareholders, and
               shall hold each of them harmless, from and against any and all
               losses, liabilities, damages, costs, expenses and claims
               (including legal fees on a solicitor and his own client basis)
               suffered or incurred by such party in respect of (a) any
               violation by the Corporation or any Subsidiary of Applicable Law
               related to the environment including the assertion of any Lien
               thereunder, (b) the presence of any Hazardous Substance affecting
               the Mortgaged Property or any adjacent real estate, or (c) the
               release of any Hazardous Substance by the Corporation or any
               Subsidiary into the environment, provided that the foregoing
               indemnity shall not apply in connection with any negligence,
               willful misconduct or violation of any Applicable Law relating to
               the environment affecting the Mortgaged Property by the Holder or
               its agents after taking possession of the Mortgaged Property. The
               Corporation's obligations and indemnification under this section
               shall survive the satisfaction and release of the Security
               Documents and the repayment of this Debenture. The Holder shall
               hold the benefit of this indemnity in trust for those indemnified
               parties who are not parties to this Debenture.

       (m)     CAPITAL EXPENDITURES.   Make or permit any of its Subsidiaries,
       on a consolidated basis, to make any Capital Expenditures in any
       Financial Year in excess of Can. $12,000,000 if such Capital
       Expenditures do not directly relate to the construction, development or
       operation of the Kemess South Mine.

       (n)     BANKING.  Open or operate or permit any of its Subsidiaries to
       open or operate a bank account anywhere other than in the provinces of
       Ontario, British Columbia or Quebec and other than as set out in
       SCHEDULE T1.

       (o)     GRANT OR AMEND SECURITY.  Grant or permit any of its Subsidiaries
       to grant any Liens to any of the holders of Permitted Encumbrances set
       out in Section (b) or Section (l) of the definition thereof other than
       in such form and on such property, assets or undertaking of the
       Corporation or such Subsidiary that has been previously provided to the
       Holder hereunder, or amend or permit any of its Subsidiaries to amend
       any of the agreements, instruments or documents which provide Liens to
       any of the holders of Permitted Encumbrances set out in Section (b) or
       Section (l) of the definition thereof and which have been granted on or
       prior to the date hereof.

       (p)     AMEND SUBORDINATED NOTE TRUST INDENTURE.  Amend the Subordinated
       Note


                                       36
<PAGE>


       Trust Indenture.

       (q)     BANK WORKING CAPITAL FACILITY.  Amend the Bank Working Capital
       Facility or increase the principal amount that may from time to time be
       outstanding under the Bank Working Capital Facility to an amount in
       excess of Can. $1,900,000.


ARTICLE 6 -    DEFAULT AND ACCELERATION

6.1    EVENTS OF DEFAULT

       The occurrence of any of the following events shall constitute an Event
of Default:

       (a)     if the Corporation defaults in payment of (i) all or any part of
       the principal of this Debenture when due, or (ii) all or any part of the
       fees provided for in Section 2.3 hereof when due; or

       (b)     if the Corporation defaults in payment of any interest or any
       other amount due hereunder; or

       (c)     if the Corporation defaults in observing or performing any other
       covenant or condition of this Debenture, the Purchase Agreement, the
       Security Documents, any other Debentures, or any other Document on its
       part to be observed or performed, and, if the default in question is one
       which is reasonably capable of being cured or remedied, such default
       continues for a period of 20 days after notice has been given to the
       Corporation by the Holder specifying such default and requiring the
       Corporation to rectify the same or cause to be rectified the same; or

       (d)     if any representation and warranty made by the Corporation in any
       Document is found to be false or incorrect in any material respect; or

       (e)     if an order is made or an effective resolution is passed for the
       winding-up or liquidation of the Corporation, or in the event of any
       other dissolution of the Corporation by operation of law; or

       (f)     if the Corporation defaults after the expiry of any applicable
       cure period thereunder in any way in the performance of any obligations
       to any holders of (i) Subordinated Notes or (ii) any of the Permitted
       Encumbrances referred to in clause (b) of the definition of Permitted
       Encumbrances; or if any such holder asserts any claim or takes any
       proceeding against the Corporation and such claim or proceeding is not
       being contested in good faith by all appropriate actions or, if


                                       37
<PAGE>


       proceedings are commenced against the Corporation, the rights of such
       holders are at any time unstayed or undismissed; or

       (g)     if the Corporation shall generally not pay its debts as such
       debts become due, or shall admit its inability to pay its debts
       generally as they become due or otherwise acknowledge its insolvency, or
       shall make a general assignment for the benefit of creditors; or any
       proceeding shall be instituted by the Corporation seeking to adjudicate
       it a bankrupt or insolvent, or seeking liquidation, winding-up,
       reorganization, arrangement, adjustment, protection, relief or
       composition of it or its debts, or a proposal is made by the Corporation
       under any Applicable Law relating to bankruptcy, insolvency or
       reorganization or relief of debtors, or seeking the entry of an order
       for the appointment of a receiver, trustee, custodian or other similar
       official for it or for any substantial part of its property, including
       without limitation any such proceeding under the Companies' Creditors
       Arrangement Act (Canada); or the Corporation shall take any action to
       consider, approve or authorize any of the actions set forth above; or

       (h)     if any proceeding shall be instituted against the Corporation
       seeking to adjudicate it a bankrupt or insolvent, or seeking
       liquidation, winding-up, reorganization, arrangement, adjustment,
       protection, relief or composition of it or its Debts, or a proposal is
       made against the Corporation under any Applicable Law relating to
       bankruptcy, insolvency or reorganization or relief of debtors, or
       seeking the entry of an order for the appointment of a receiver,
       trustee, custodian or other similar official for it or for any
       substantial part of its property, including without limitation any such
       proceeding under the COMPANIES' CREDITORS ARRANGEMENT ACT (Canada), and
       such proceeding is at any time not being contested in good faith by all
       appropriate proceedings or, if so contested, remains outstanding,
       undismissed and unstayed, more than 30 days from the institution of such
       proceeding; or

       (i)     if any execution, distress or other enforcement process, whether
       by court order or otherwise, involving indebtedness of the Corporation
       individually or in the aggregate in excess of Can. $2,000,000 becomes
       enforceable against any property of the Corporation and if such
       execution, distress or other enforcement process shall have been
       commenced by a creditor before obtaining judgment, such execution,
       distress or other enforcement process shall not have been stayed or
       vacated within 3 Business Days from the commencement thereof, or if any
       judgment or order for the payment of money in excess of Can. $2,000,000
       shall be rendered against the Corporation and either (i) enforcement
       proceedings shall have been commenced by any creditor upon such judgment
       or order or (ii) there shall be any period during which a stay of
       enforcement of such judgment or order, by reason of a pending appeal or
       otherwise, shall not be in effect;

                                      38

<PAGE>


       (j)     if any event or proceeding is taken with respect to any part of
       the Mortgaged Property in any jurisdiction outside Canada which has an
       effect equivalent or similar to any of the events described in sections
       6.1(e), 6.1(g) or 6.1(h); or

       (k)     if the Corporation fails to make to any Person when due any
       payment (whether at scheduled maturity or by required prepayment,
       acceleration, demand or otherwise, but excluding trade payables incurred
       in the ordinary course of business which are not overdue by 90 days or
       more or are being contested in good faith by all appropriate proceedings
       promptly instituted and diligently conducted by the Corporation) in
       respect of indebtedness which exceeds individually Can. $3,000,000 or in
       the aggregate Can. $7,000,000; or any other event shall occur or
       condition shall exist specified in any agreement or instrument relating
       to any such indebtedness or liability of the Corporation if the effect
       of such event or condition is to accelerate, or to permit the
       acceleration of the maturity of such indebtedness or liability of the
       Corporation; or any such indebtedness or liability of the Corporation
       which is outstanding shall be declared to be due and payable prior to
       the stated maturity thereof and in each such case such failure or event
       is not remedied within 20 days of such failure or event; or

       (l)     If the Corporation allows, permits, consents to or becomes
       subject to a Change of Control of the Corporation without the prior
       written consent of the Holder, provided that it shall not be an Event of
       Default hereunder and the Holder will consent to a Change of Control of
       the Corporation if prior to such Change of Control of the Corporation
       the Holder, acting reasonably, determines that such Change of Control of
       the Corporation (i) will not impair or prejudice the ability of the
       Corporation to pay any indebtedness owing hereunder or to perform its
       covenants hereunder, and (ii) will not impair or prejudice the Holder's
       Security; or

       (m)     if the Kemess Mine Production Date is not on or before December
       31, 1998; or

       (n)     if any Material Subsidiary commits an event of default (after any
       applicable cure period) in any agreement with or obligation owing to the
       Holder including pursuant to any of the Documents; or

       (o)     If the Corporation commits a default under or is in breach of the
       equipment lease dated April 6, 1998 between the Corporation and Trilon
       Bancorp Inc. (Lease Number L-RY001).


                                     39

<PAGE>

6.2    ACCELERATION ON DEFAULT

       Upon the occurrence of an Event of Default, the Holder may, in its
discretion:

               (a)    declare the principal amount of this Debenture then
               outstanding, all accrued and unpaid interest hereunder and any
               other moneys payable hereunder to be immediately due and payable
               by the Corporation to the Holder; and

               (b)    realize upon all or any part of the Security constituted
               by the Security Documents; and

               (c)    take such actions and commence such proceedings as may be
               contemplated by the Documents or permitted at law or in equity
               (whether or not provided for herein or in the Security Documents
               or other Documents) at such times and in such manner as the
               Holder in its sole discretion may consider expedient;

all without, except as may be required by Applicable Law, any additional 
notice, presentment, demand, protest, notice of protest, dishonour or any 
other action.

6.3    REMEDIES CUMULATIVE

       No remedy conferred upon or reserved to the Holder herein or in the 
Security Documents or any other Document is intended to be exclusive of any 
other remedy, but each and every such remedy shall be cumulative and shall be 
in addition to every other remedy given hereunder or now or hereafter 
existing by law or by statute.

6.4    DEBENTURE NOT REQUIRED

       All rights of action under the Security Documents or hereunder may be 
enforced by the Holder without the possession of this Debenture or the 
production thereof on the trial or other proceedings relating thereto.

                                  40

<PAGE>

ARTICLE 7 -    MISCELLANEOUS

7.1    NOTICE

       Any notice or other communication required or permitted to be given 
hereunder shall be in writing and shall be given by facsimile or other means 
of electronic communication or by delivery as hereafter provided. Any such 
notice or other communication, if sent by facsimile or other means of 
electronic communication, shall be deemed to have been received on the 
Business Day following the sending, or, if delivered by hand, shall be deemed 
to have been received at the time it is delivered to the applicable address 
noted below either to the individual designated below or to an individual at 
such address having apparent authority to accept deliveries on behalf of the 
addressee. Notice of change of address shall also be governed by this 
section.  Notices and other communications shall be addressed as follows:

       (a)     if to the Corporation: Royal Oak Mines Inc.
                                            c/o Arctic Precious Minerals, Inc.,
                                            d.b.a Royal Oak Mines (U.S.A.) Inc.
                                            5501 Lakeview Drive
                                            Kirkland, Washington
                                            U.S.A. 98033

                                            Attention: President
                                            Facsimile Number: (425) 822-3349

               with a copy to:              Lang Michener
                                            BCE Place, Box 747
                                            2500 - 181 Bay Street
                                            Toronto, Ontario
                                            M5J 2T7
                                            Attention:  William Sheridan and
                                            David Thring
                                            Facsimile No.: (416) 365-1719

       (b)     if to the Holder:            Northgate Exploration Limited
                                            1 First Canadian Place
                                            Suite 2630, P.O. Box 143
                                            Toronto, Ontario
                                            M5X 1C7
                                            Attention: Terry Lyons
                                            Facsimile Number: (416) 363-2856

                                        41

<PAGE>

               with a copy to:              Goodman and Carr
                                            Suite 2300
                                            200 King Street West
                                            Toronto, Ontario
                                            M5H 3W5

                                            Attention: Jeffrey Blidner and 
                                                       Lorne Segal
                                            Facsimile No.: (416) 595-0567

                                  42

<PAGE>

7.2    ASSIGNMENT

       The Corporation may not assign this Debenture. This Debenture and the 
Holder's rights hereunder may be assigned at any time by the Holder in whole 
or in part (including, without limitation, by the grant or conveyance of 
participations in its interests hereunder), together with, at its discretion, 
its corresponding rights in any or all of the Security Documents and other 
Documents. Upon an assignment pursuant to this section, the Corporation 
shall, at the request of the assignee, issue a replacement Debenture 
registered in the name of the assignee (and, in the case of a partial 
assignment, shall also issue a replacement Debenture to the Holder in respect 
of the principal balance held by it), upon surrender and cancellation of the 
existing Debenture, and shall also, at the Holder's request, execute and 
deliver new Security Documents and other Documents to and in favour of the 
assignee. The Corporation shall also, and shall cause the Subsidiaries to, 
execute and deliver such other agreements, documents and instruments as the 
Holder or the assignee may request in connection with such assignment. The 
Holder may provide to any proposed assignee or participant such information 
concerning the financial position and the operations of the Corporation and 
its Subsidiaries as, in the opinion of the Holder, may be relevant or useful 
in connection with this Debenture or any other Document or any portion 
thereof proposed to be acquired by such assignee or participant. 
Notwithstanding anything else in this Section 7.2, if no Default or Event of 
Default has occurred the Holder shall not be entitled to assign this 
Debenture to any corporation whose principal business is the exploration for 
or mining of precious or base metals (other than to such Persons in which the 
Holder or their respective Associates and Affiliates has a direct or indirect 
interest, which Persons may be an assignee of this Debenture or the 
Documents). Following a Default or an Event of Default, there shall be no 
restrictions on the Holder's ability to assign tis Debenture or any of the 
Documents.

7.3    EXCHANGE OF INFORMATION

       The Holder may provide to any proposed assignee or participant such 
information concerning the financial position and the operations of the 
Corporation and its Subsidiaries as, in the opinion of the Holder, may be 
relevant or useful in connection with this Debenture or any other Document or 
any portion thereof proposed to be acquired by such assignee or participant.

                                43

<PAGE>

7.4    RELIANCE AND NON-MERGER

       All covenants, agreements, representations and warranties of the 
Corporation made herein or in any other Document or in any certificate or 
other document signed by any of its directors or officers and delivered by or 
on behalf of either of them pursuant hereto or thereto are material, shall be 
deemed to have been relied upon by the Holder notwithstanding any 
investigation heretofore or hereafter made by the Holder or the Holder's 
Counsel or any employee or other representative of the Holder and shall 
survive the execution and delivery of this Debenture and the other Documents 
until the Corporation shall have satisfied and performed all of its 
obligations hereunder and thereunder.  Nothing contained in this Debenture 
shall operate to subordinate the Security provided in favour of the Holder to 
or in favour of any Permitted Encumbrance or other Liens, or to postpone any 
of the obligations owing by the Corporation to the Holder to any of the 
obligations, indebtedness or liabilities owed by the Corporation to the 
holders of the Permitted Encumbrances or other Liens.

7.5    AMENDMENT, WAIVER

       No amendment or waiver of this Debenture shall be binding unless 
executed in writing by the Corporation if it is to be bound thereby, or by 
the Holder if the Holder is to be bound thereby (any such amendment or waiver 
to be contemporaneously made in respect of the Debenture).  No waiver of any 
provision of this Debenture will constitute a waiver of any other provision 
nor will any waiver of any provision of this Debenture constitute a 
continuing waiver unless otherwise expressly provided.

7.6    NO SET-OFF BY THE CORPORATION

       The amounts payable by the Corporation under this Debenture or any 
other Document shall not be subject to any deduction, withholding, set-off or 
counterclaim by the Corporation for any reason whatsoever.

7.7    EMPLOYMENT OF EXPERTS

       The Holder may, at any time and from time to time, when a Default or 
Event of Default has occurred and is continuing, retain and employ legal 
counsel, independent accountants, consultants and other experts in order to 
perform or assist it in the performance of its rights and powers under this 
Debenture or the other Documents, and the Corporation shall pay to the Holder 
on demand all proper and reasonable compensation paid or payable to such 
counsel, accountant, consultant or other expert retained or employed pursuant 
to this provision.

                                     44

<PAGE>

7.8    FURTHER ASSURANCES

       Whether before or after the happening of a Default or Event of 
Default, the Corporation shall at its own expense do, make, execute or 
deliver, or cause to be done, made, executed or delivered by its Subsidiaries 
or other Persons, all such further acts, documents and things in connection 
with this Debenture and the other Documents as the Holder may reasonably 
require from time to time for the purpose of giving effect to the Documents 
including, without limitation, for the purpose of facilitating the 
enforcement of the Security, all immediately upon the request of the Holder.

7.9    GOVERNING LAW

       This Debenture shall be governed by and construed in accordance with 
the laws of the Province of Ontario and the federal laws of Canada applicable 
therein.  The Corporation submits to the jurisdiction of the courts of 
Ontario to determine all issues whether at law or in equity arising from this 
Debenture.

7.10   PAYMENT OF COSTS AND EXPENSES

       The Corporation shall pay to the Holder on demand all reasonable costs 
and expenses of the Holder, its agents, officers and employees, and any 
receiver or receiver-manager appointed by the Holder or by a court, in 
connection with this Debenture, the Security Documents and the other 
Documents including, without limitation:

       (a)     the preparation, execution, filing and registration of the
       Debenture, the Security Documents, and the other Documents (including,
       without limitation, any Security Documents and other Documents to be
       delivered following the date hereof pursuant to Article 3 hereof) and
       any actual or proposed amendment or modification hereof or thereof or
       any waiver hereunder or thereunder and all instruments supplemental or
       ancillary thereto;

       (b)     obtaining advice as to the Holder's rights and responsibilities
       under this Debenture, the Security Documents and the other Documents at
       any time after an Event of Default; and

       (c)     the defence, establishment, protection or enforcement of any of
       the rights or remedies of the Holder under this Debenture, any of the
       Security Documents or any other Documents including, without limitation,
       all costs and expenses of establishing the validity and enforceability
       of, or of collection of amounts owing under, this Debenture, any of the
       Security Documents or any other Documents or of any enforcement of the
       Security,

                                   45

<PAGE>

and all of the fees, expenses and disbursements of any advisors to the Holder 
including, Counsel to the Holder on a solicitor and his own client basis, 
incurred in connection therewith, and including all sales or value-added 
taxes payable by the Holder (whether refundable or not) on all such costs and 
expenses. 

7.11   JUDGMENT CURRENCY

       If for the purpose of obtaining judgment in any court, it is necessary 
to convert an amount due under this Debenture or any other of the Documents 
or under any instrument delivered thereunder from a currency in which it is 
due (the "Original Currency") into another currency (the "Second Currency") 
the parties hereto agree, to the fullest extent permitted by law, that the 
rate of exchange used shall be that at which, in accordance with normal 
banking procedures, the Holder could purchase the Original Currency with the 
Second Currency on the date two Business Days preceding that on which 
judgment is given.  The obligation of the Corporation in respect of any 
Original Currency due from it to the Holder under this Debenture or any other 
Documents or under any instrument delivered thereunder shall, notwithstanding 
any judgment in the Second Currency, be discharged by a payment made to the 
Holder entitled thereto on account thereof in the Second Currency only to the 
extent that, on the Business Day following receipt of such payment in the 
Second Currency, the Holder may, in accordance with normal banking 
procedures, purchase the amount due in the Original Currency with the amount 
of the Second Currency so paid; and if the amount of the Original Currency 
which may be so purchased is less than the amount originally due in the 
Original Currency, the Corporation agrees as a separate and independent 
obligation and notwithstanding any such payment or judgment to indemnify the 
Holder against such deficiency.  

7.12   PAYMENT AGREEMENTS FOR DEBENTURE

       Notwithstanding anything contained herein, the Corporation may enter 
into an agreement with the Holder, in the absolute discretion of the Holder, 
providing for the payment to such Holder of the principal of and interest on 
this Debenture at a place and in a manner other than the place and manner 
specified herein as the place and manner for such payment.  Any payment of 
the principal of and interest on this Debenture at such other place and in 
such other manner pursuant to such agreement shall, notwithstanding any other 
provision of this Debenture, be valid and binding on the Corporation and the 
Holder. 

                                     46

<PAGE>

7.13   ENTIRE AGREEMENT

       The Documents constitute the entire agreement between the parties 
hereto pertaining to the matters therein set forth and supersede and replace 
any prior understandings or arrangements pertaining to such matters.  There 
are no warranties, representations or agreements between the parties in 
connection with such matters except as specifically set forth or referred to 
in the Documents. 

       IN WITNESS WHEREOF the Corporation has executed this Debenture on the 
date first above written. 

                                      ROYAL OAK MINES INC.

                                      By: /s/ James H. Wood
                                         -------------------------------------
                                      Name:  James H. Wood
                                      Title:  Chief Financial Officer

       Dated as of June 22, 1998.

                                     47



<PAGE>

                                     SCHEDULE "A"

                                     DEFINITIONS

"ADDITIONAL PURCHASE PRICE" has the same meaning given to such term in the
Purchase Agreement;

"AFFILIATE" has the meaning ascribed thereto in the BUSINESS CORPORATIONS ACT
(Ontario) and includes, for greater certainty, all Subsidiaries;

"APM" means Arctic Precious Metals, Inc., a company incorporated under the laws
of Nevada;

"APM TRANSACTIONS" means ordinary course transactions between the Corporation
and APM in accordance with past practice and generally as described in SCHEDULE
B hereto provided, however that such transactions shall not in any one Financial
Year involve transactions of the kind referred to in sections 5.3(b)(i),(ii) and
(iii), 5.3(c) and 5.3(d) hereof aggregating more than Can. $13,500,000 and
provided further that such transactions shall be permitted only prior to an
Event of Default;

"APPLICABLE LAW" means, in respect of any Person, property, transaction or
event, all applicable laws, statutes, rules, by-laws and regulations, and all
applicable official written directives, orders, judgments and decrees of
Governmental Bodies;

"ASSOCIATE" has the meaning ascribed thereto in the BUSINESS CORPORATIONS ACT
(Ontario) and shall include any entity which is an Associate of an Associate,
and so on;

"AUDITED FINANCIAL STATEMENTS" means the audited consolidated financial
statements of the Corporation as at and for the 12 month fiscal period ended
December 31, 1997, consisting of a balance sheet, an income statement and a
statement of changes in financial position, together with the notes thereto,
copies of which have been provided to the Holder;

"BANK WORKING CAPITAL FACILITY" means a working capital facility provided to the
Corporation by the Bank of Nova Scotia pursuant to a credit agreement dated
February 15, 1996 as amended by agreements dated August 5, 1996 and May 30, 1997
in a maximum principal amount not to exceed Can. $1,900,000 pursuant to which
the Bank of Nova Scotia has outstanding letters of credit on behalf of the
Corporation and in respect of which the Corporation has provided to the Bank of
Nova Scotia cash collateral as security therefor in the approximate amount of
Can. $2,012,126 as at May 19, 1998 plus interest thereon.

"BUSINESS DAY" means any day, other than Saturday, Sunday or any statutory
holiday in Toronto, Canada;

"CAPITAL EXPENDITURES" means, for any period, those expenditures of the
Corporation (on a consolidated basis) which would, in accordance with generally
accepted accounting principles, be considered expenditures for capital assets of
the Corporation (on a consolidated basis) for such period;

<PAGE>

"CAPITAL LEASE OBLIGATIONS" of the Corporation means the obligations of the
Corporation to pay rent or other amounts under a lease (or other agreement
conveying the right to use) of real or personal property, which obligations are
required to be classified and accounted for as a capital lease on a balance
sheet under generally accepted accounting principles and, for purposes of this
Debenture, the amount of such obligations shall in each case be the capitalized
amount thereof, determined in accordance with generally accepted accounting
principles;

"CHANGE OF CONTROL OF THE CORPORATION" means if any Person acquires or becomes
the beneficial owner of, or a combination of Persons acting jointly acquire or
become the beneficial owners of, directly or indirectly more than 35% of the
common shares of the Corporation or any shares of the Corporation which in the
aggregate represent 35% of the voting shares of the Corporation, whether through
the acquisition of previously issued and outstanding shares, or of shares that
have not been previously issued, or any combination thereof, or any other
transaction having a similar effect;

"CONFIDENTIALITY AGREEMENT" means the Confidentiality Agreement dated February
19, 1998 between the Corporation and BC Pacific Capital Corporation;

"CONSENT" has the meaning attributed to such term in Section 4.1(g);

"COPPERSTONE PROPERTY" has the meaning ascribed thereto in SCHEDULE U;

"COUNSEL" means a barrister or solicitor or firm of barristers and solicitors
retained by the Holder or retained by the Corporation and acceptable to the
Holder acting reasonably;

"DEBENTURE" means this Senior Secured Debenture - Series B of the Corporation as
it may be amended, modified, restated or replaced from time to time;

"DEBENTURES" means all Senior Secured Debentures of the Corporation (whether
Series A or Series B) sold pursuant to the Purchase Agreement as same may be
amended, modified, restated or replaced from time to time.

"DEBT" of any Person means all indebtedness including, without limitation (i)
all indebtedness of such Person for and in respect of borrowed money, including
obligations with respect to bankers' acceptances, letters of credit and letters
of guarantee or indemnity; (ii) all indebtedness of such Person for the deferred
purchase price of property or services represented by a note or other evidence
of indebtedness or other security; (iii) all indebtedness created or arising
under any conditional sale or other title retention agreement with respect to
property acquired by such Person (even though the rights and remedies of the
seller or lender under such agreement in the event of default are limited to the
possession or sale of such property); (iv) all obligations under leases which,
in accordance with generally accepted accounting principles (or accounting
principles generally accepted in the jurisdiction of incorporation or
organization of such Person), are recorded as capital leases, in respect of
which such Person is liable as lessee; (v) all

                                       2
<PAGE>

indebtedness or obligations of such Person pursuant to any interest rate 
swaps, currency swaps, commodity agreements and similar hedging agreements; 
and (vi) all Debt Guaranteed by such Person;

"DEBT GUARANTEED" by any Person means Debt of the kinds referred to in (i)
through (v) of the definition of Debt which is directly or indirectly guaranteed
by such Person or which such Person has agreed (contingently or otherwise) with
the creditor to purchase or otherwise acquire or assume, or in respect of which
such Person has otherwise assured a credit against loss by means of an
indemnity, security or bond;

"DEFAULT" means any event which, but for the lapse of time, giving of notice or
both, would constitute an Event of Default;

"DISCLOSED DEFAULTS" has the meaning given to such term in Section 4.1(n)
hereof;

"DOCUMENTS" means, collectively, the Debenture, the Security Documents and any
other document now or hereafter delivered to the Holder by the Corporation or
any Subsidiary pursuant to or in connection therewith including any document,
agreement or guarantee delivered to the Holder pursuant to or in connection with
the Reorganization Undertaking (as defined in the Purchase Agreement);

"EBITDA" means, for any period, Net Income for such period, plus (i)
consolidated interest expense of the Corporation and its Subsidiaries for such
period, plus (ii) provision for income taxes of the Corporation and its
Subsidiaries for such period, plus (iii) depreciation, amortization (including
amortization of goodwill and other intangibles but excluding amortization of
prepaid cash expenses that were paid in a prior period) and other non-cash
charges (excluding any such non-cash charge to the extent that it represents an
accrual of or reserve for cash charges in any future period or amortization of a
prepaid cash expense that was paid in a prior period) of the Corporation and its
Subsidiaries to the extent that such depreciation, amortization and other
non-cash charges were deducted in computing Net Income for such period, minus
(iv) non-cash items increasing consolidated revenues of the Corporation and its
Subsidiaries in determining Net Income for such period, in each case on a
consolidated basis and determined in accordance with generally accepted
accounting principles; provided that the following shall not be included in the
calculation of EBITDA as either a charge or revenue: (a) non-cash changes in the
carrying value of the Subordinated Notes and other Debt which is not denominated
in Canadian dollars and is translated to Canadian dollars at the balance sheet
date; and (b) non-cash changes resulting from the marking to market of foreign
currency and commodity contracts; and provided further that premiums paid or
received on options, warrants or similar instruments shall be recognized, for
the purposes of EBITDA, as expenses or revenue, as the case may be, only on the
date on which the option, warrant or other instrument in question expires,
matures, is exercised or otherwise terminates;

"ELIGIBLE CAPITAL LEASE OBLIGATIONS AND PURCHASE MONEY SECURITY INTERESTS" means
(a) Capital Lease Obligations and Purchase Money Security Interests existing as
at the date hereof

                                       3
<PAGE>

or any renewals or replacements thereof on materially the same terms and in 
amounts not materially exceeding those existing as at the date hereof; and 
(b) Capital Lease Obligations and Purchase Money Security Interests incurred 
following the date hereof if the claims of the lessor or creditor thereunder 
are limited to recovery or repossession of the leased or financed property in 
question and if such leased or financed property is newly acquired by the 
Corporation;

"EVENT OF DEFAULT" has the meaning attributed to such term in section 6.1;

"EXCLUDED ASSETS" means the Windy Craggy Property;

"EXISTING ENCUMBRANCES" means the Liens specifically described in SCHEDULE C1;

"FINAL MATURITY DATE" has the meaning given to such term in Section 2.3(a)
hereof;

"FINANCIAL QUARTER" means, in relation to the Corporation or any Subsidiary, the
four periods each consisting of three months in each Financial Year of the
Corporation or such Subsidiary ending on the last day of each of the third,
sixth, ninth and twelfth months in such Financial Year;

"FINANCIAL YEAR" means, in relation to the Corporation or any Subsidiary, the
period beginning on January l and ending on December 31 of each calendar year;

"GENERALLY ACCEPTED ACCOUNTING PRINCIPLES" means the accounting principles so
described and promulgated by the Canadian Institute of Chartered Accountants
from time to time;

"GLENCORE AGREEMENT" means the letter agreement dated November 5, 1997 between
the Corporation and Glencore Ltd. relating to the sale by the Corporation of
copper concentrate;

"GOVERNMENTAL BODY" means any government, parliament, legislature, or any
regulatory, authority, agency, commission or board of any government, parliament
or legislature, or any court or (without limitation to the foregoing) any other
law, regulation or rule-making entity (including, without limitation, any
central bank, fiscal or monetary authority or authority regulating banks),
having jurisdiction in the relevant circumstances, or any Person acting under
the authority of any of the foregoing (including, without limitation, any
arbitrator);

"HAZARDOUS SUBSTANCE" includes but is not limited to any contaminants,
pollutants, dangerous substances, liquid wastes, industrial wastes, toxic
substances, hazardous wastes, hazardous materials of whatsoever nature or kind
or any other hazardous substance within the meaning of any Applicable Law
including without limitation the HAZARDOUS PRODUCTS ACT (Canada), the CANADIAN
ENVIRONMENTAL PROTECTION ACT (Canada), the ENVIRONMENTAL PROTECTION ACT
(Ontario) and the WASTE MANAGEMENT ACT (B.C.);

"HOLDER" means Northgate Exploration Limited and its successors and permitted
assigns;

                                       4
<PAGE>

"INITIAL PURCHASE PRICE" has the same meaning given to such term in the Purchase
Agreement; 

"INTELLECTUAL PROPERTY" means all trade marks, trade names, patents, patent
applications, copyrights, trade secrets, logos, processes, computer systems and
application software which are owned or used by, or which relate to the business
of, the Corporation or the Subsidiaries;

"INTEREST PAYMENT DATE" means each day on which interest is payable hereunder
pursuant to section 2.1;

"INTEREST RATE" means the LIBOR Rate plus 6.0% per annum;

"INTERIM FINANCIAL STATEMENTS" means the unaudited consolidated financial
statements of the Corporation as at and for the 4 month period ended April 30,
1998 consisting of a balance sheet, an income statement and a statement of
changes in financial position, a copy of which has been provided to the Holder;

"KEMESS MINE" means the Kemess North Property and the Kemess South Mine;

"KEMESS NORTH PROPERTY" means all present and future property and assets
comprising or relating to what is generally referred to as the Kemess North
Property in British Columbia, Canada including, without limitation, all mineral
claims and leases referred to in SCHEDULE B-1 hereto, all buildings, equipment,
fixtures and other property and assets owned or leased by the Corporation (or in
which the Corporation otherwise has an interest) situated or used at the Kemess
North Property site all operations, exploration and other activities carried on
at such site and all permits, authorizations, licenses and similar approvals
relating thereto;

"KEMESS SOUTH MINE" means all present and future property and assets comprising
or relating to what is generally referred to as the Kemess South Mine property
in British Columbia, Canada including, without limitation, all mineral claims
and leases referred to in SCHEDULE B-2 hereto, all buildings, equipment,
fixtures and other property and assets owned or leased by the Corporation (or in
which the Corporation otherwise has an interest) situated or used at the Kemess
South Mine site, all operations, exploration and other activities carried on at
such site and all permits, authorizations, licenses and similar approvals
relating thereto;

"KEMESS MINE PRODUCTION DATE" means the date that the Kemess South Mine has
produced concentrate over the immediately preceding 30 day period, and is able
to sustain and maintain such production thereafter, of not less than 8500 short
tons of concentrate yielding mineral content that is acceptable to Glencore Ltd.
pursuant to the Glencore Agreement (without giving effect to any amendments
thereof);

"KEMESS MINE CONSTRUCTION CONTRACTS" has the meaning given to such term in
Section 4.1(x);

                                       5
<PAGE>

"KNOWLEDGE" means the best knowledge of the senior management of that party
(which in the case of the Corporation specifically includes but is not limited
to the Kemess Mine Project Manager, the Kemess Mine Project Director and the
Kemess Mine Manager of Project Accounting, after having made all reasonable
inquiries;

"LIBOR RATE" means the rate of interest per annum, calculated on the basis of a
year of 360 days, determined by the Holder for a 30 day period to be (i) the
rate per annum, calculated on the basis of a year of 360 days, which appears on
the Reuters Telerate Page 3750 as of 11:00 a.m. (London time) on the second
Business Day prior to the commencement of such 30 day period in an amount of
U.S. dollars equal to the principal amount then outstanding under the Debenture
and for a 30 day deposit period, or (ii) if such rate does not appear on the
Reuters Telerate Page 3750 as and when contemplated herein, the arithmetic
average (rounded upwards to the nearest 1/16th of 1%) of the rates of interest
per annum, calculated on the basis of a year of 360 days, at which any three
prime banks in the London inter-bank market are offering deposits at
approximately 11:00 a.m. (London time) on the second Business Day prior to the
commencement of such 30 day period in an amount of U.S. dollars equal to the
principal amount then outstanding under this Debenture and for a 30 day deposit
period;

"LIEN" means any mortgage, lien, pledge, assignment, charge, security interest,
lease intended as security, title retention agreement, rights reserved in any
Governmental Body, registered lease of real property, hypothec, levy, execution,
seizure, attachment, garnishment or other similar encumbrance and includes any
contractual restriction which, if contravened, may give rise to an encumbrance;

"MATERIAL AUTHORIZATION" means, with respect to the Corporation or any
Subsidiary, any approval, permit, licence or similar authorization from, and any
filing or registration with, any Governmental Body required by such Person to
own its property and assets or to carry on its business in each jurisdiction in
which it does so or is contemplated to do so, where the failure to have such
approval, permit, licence, authorization, filing or registration would have a
material adverse effect upon its business, financial condition or prospects;

"MATERIAL CONTRACTS" has the meaning given to such term in Section 4.1(x);

"MATERIAL SUBSIDIARIES" means APM and all Subsidiaries each of which has total
assets exceeding a fair market value of Can. $2,000,000;

"MATERIALITY THRESHOLD" means that the representation, warranty, covenant or
other obligation in question shall apply only to subject matter which
individually or in the aggregate is or should reasonably be expected as
determined by the Holder, acting reasonably, to be material to:

     (a)  the business, property or affairs of the Corporation taken as a
     whole;

     (b)  the construction, ownership or operation of the Kemess Mine or
     the requirement that the Kemess Mine Production Date occur on or before
     December 31, 1998; or

                                       6
<PAGE>

     (c)  the Holder, in its capacity as a secured creditor of the
     Corporation under the Documents;

"MIKWAM PROPERTY" has the meaning ascribed thereto in SCHEDULE V;

"MORTGAGED PROPERTY" means all of the property, assets and undertaking of the
Corporation and APM of every nature and kind, both present and future, real and
personal, tangible and intangible, other than Excluded Assets, including without
limitation all proceeds of disposition of any such property, assets and
undertaking;

"NET INCOME" means, for any period, the aggregate of the net income of the
Corporation and its Subsidiaries determined on a consolidated basis in
accordance with generally accepted accounting principles (for greater certainty,
after Taxes), but excluding therefrom (i) extraordinary items, (ii) any gains or
losses from the sale of any assets (other than inventory sold in the ordinary
course of business) of the Corporation or its Subsidiaries, (iii) the net income
of any Subsidiary to the extent that the declaration or payment of dividends or
similar distributions by that Subsidiary of that net income is not permitted,
directly or indirectly, by operation of the terms of its charter or any
agreement, instrument, judgment, decree, order, statute, rule or governmental
regulation applicable to that Subsidiary or its shareholders, or is not
permitted without prior governmental approval (that has not been obtained), and
(iv) the income or loss from any entity in which the Corporation's or its
Subsidiary's, as applicable, investment is classified pursuant to generally
accepted accounting principles as a minority interest;

"NIGHTHAWK LAKE MINE" has the meaning ascribed thereto in SCHEDULE W;

"PAMOUR MINE" has the meaning ascribed thereto in SCHEDULE X;

"PERMITTED DEBT" means, collectively, the indebtedness pursuant to the
Debentures and:

     (a)  indebtedness of the Corporation under the Subordinated Notes;

     (b)  indebtedness of the Corporation which, pursuant to agreements and
     confirmations delivered by the applicable creditor to and in favour of
     the Corporation and the Holder in form and content satisfactory to the
     Holder, is fully subordinated and postponed to the obligations of the
     Corporation to the Holder under the Debenture and the other Documents,
     provided that at the time any or all such indebtedness is incurred or
     reincurred no Default or Event of Default has occurred; 

     (c)  indebtedness of the Corporation to Persons under interest rate
     swaps, currency swaps, commodity agreements and similar hedging
     agreements (the "Permitted Hedging Indebtedness");

                                       7
<PAGE>

     (d)  Debt under or secured by Eligible Capital Lease Obligations and
     Purchase Money Security Interests, not at any time exceeding the
     aggregate of (A) Can. $30,000,000 plus (B) for so long as the Proposed
     Leaseback Assets are leased to the Corporation pursuant to the April 6,
     1998 lease between the Corporation and Trilon Bancorp Inc. (Lease Number
     L-RY001) and in the event of a sale and leaseback of the Proposed
     Leaseback Assets and solely for those purposes, the amount by which the
     Debt under or secured by an Eligible Capital Lease Obligation or
     Purchase Money Security Interest relating to the Proposed Leaseback
     Assets exceeds the difference between (1) Can. $30,000,000, and (2) the
     amount of Debt under all Eligible Capital Lease Obligations and Purchase
     Money Security Interests existing as at the date hereof;

     (e)  Debt by way of trade payables or the endorsement of negotiable
     instruments incurred or created in the ordinary course of business for
     the purpose of carrying on same.

"PERMITTED ENCUMBRANCES" means Liens granted to secure indebtedness under the
Debentures and other Documents, Liens granted to Trilon Financial Corporation to
secure obligations owing to it under a Royalty Agreement and a Royalty Debenture
each dated the date hereof; and: 

     (a)  the Existing Encumbrances set out in Parts I and II of
     SCHEDULE C1 hereto and extensions, renewals or refinancings thereof on
     materially the same terms and in amounts not materially exceeding those
     existing at the date hereof;

     (b)  Liens on the Mortgaged Property granted by the Corporation to
     holders of Permitted Hedging Indebtedness in an aggregate amount not at
     any time exceeding U.S. $50,000,000 to secure the Corporation's
     obligations in respect of Permitted Hedging Indebtedness in an aggregate
     amount not at any time exceeding U.S. $50,000,000, provided that each
     such holder delivers to and in favour of the Corporation and the Holder
     an inter-creditor agreement, in form and content satisfactory to the
     Holder, providing for, among other things, the subordination by such
     holders of Permitted Hedging Indebtedness Note of any Liens granted to
     them to and in favour of the Security until such time as all of the
     obligations of the Corporation to the Holder are satisfied in full;

     (c)  cash collateral accounts for the letters of credit specifically
     described in SCHEDULE Y and extensions, renewals or refinancings thereof
     on materially the same terms and in amounts not materially exceeding
     those existing at the date hereof;

                                       8
<PAGE>

     (d)  Liens for taxes, assessments or governmental charges incurred in
     the ordinary course of business that are not yet due and payable (taking
     into account any relevant grace periods), in respect of which the
     Corporation or a Subsidiary, as the case may be, has established on its
     books reserves to the extent required by generally accepted accounting
     principles considered by it and its auditors to be adequate therefor;

     (e)  rights reserved to or vested in any Governmental Body by the
     terms of any lease, licence, franchise, grant or permit, or by any
     statutory provision, to terminate the same, to take action which results
     in an expropriation, to designate a purchaser of any Mortgaged Property
     or to require annual or other payments as a condition to the continuance
     thereof;

     (f)  construction, contractors', mechanics', carriers',
     warehousemen's, suppliers' and materialmen's Liens and Liens in respect
     of vacation pay, workers' compensation, unemployment insurance or
     similar statutory obligations, provided the obligations secured by such
     Liens are not yet due and payable and, in the case of construction
     Liens, which have not yet been filed or for which the Corporation or a
     Subsidiary has not received written notice of a Lien, provided that in
     any case the Corporation may permit to exist construction Liens (in
     addition to those included in the definition of Existing Encumbrances
     and listed in Part I of SCHEDULE C1) which do not individually or in the
     aggregate relate to indebtedness exceeding Can. $10,000,000, which the
     Corporation is contesting in good faith by all appropriate proceedings
     promptly instituted and diligently conducted, and in respect of which,
     notice in writing has been given by the Corporation to the Holder, with
     full particulars thereof;

     (g)  zoning restrictions, easements, rights of way, leases or other
     similar encumbrances or privileges in respect of real property which in
     the aggregate do not materially impair the use of such property by the
     Corporation or a Subsidiary in the operation of its business;

     (h)  Liens in connection with any Eligible Capital Lease Obligations
     and Purchase Money Security Interests in respect of Debt not at any time
     exceeding in the aggregate of (A) Can. $30,000,000 plus (B) for so long
     as the Proposed Leaseback Assets are leased to the Corporation pursuant
     to the April 6, 1998 lease between the Corporation and Trilon Bancorp
     Inc. (Lease Number L-RY001) and in the event of a sale and leaseback of
     the Proposed Leaseback Assets and solely for those purposes, the amount
     by which the Debt under or secured by an Eligible Capital Lease
     Obligation or Purchase Money Security Interest relating to the Proposed
     Leaseback Assets exceeds the difference between (1) Can. $30,000,000 and
     (2) the amount of the Debt under all Eligible Capital lease Obligations
     and Purchase Money Security Interests existing as at the date hereof;

     (i)  security given by the Corporation or a Subsidiary to a public
     utility or any

                                       9
<PAGE>

     Governmental Body, when required by such utility or Governmental 
     Body in connection with the operations of the Corporation or 
     Subsidiary in the ordinary course of its business, which singly or in
     the aggregate do not materially detract from the value of the asset
     concerned or materially impair its use in the operation  of the business
     of the Corporation or Subsidiary;

     (j)  the reservation in any original grants from the Crown of any land
     or interest therein and statutory exceptions to title;

     (k)  title defects or irregularities which are of a minor nature and
     which do not materially detract from the value of the assets of the
     Corporation or its Subsidiaries encumbered thereby; 

     (l)  Liens on the Mortgaged Property granted by the Corporation to or
     on behalf of holders of the Subordinated Notes in an aggregate principal
     amount not at any time exceeding U.S. $175,000,000 to secure the
     Corporation's obligations in respect of the Subordinated Note Trust
     Indenture in an aggregate principal amount not at any time exceeding
     U.S. $175,000,000, provided that Chase Manhattan Trust Company, National
     Association, as trustee thereunder and any other collateral agent
     appointed by it delivers to and in favour of the Corporation and the
     Holder an inter-creditor agreement, in form and content satisfactory to
     the Holder, providing for, among other things, the subordination by such
     holders of Subordinated Notes of any Liens granted to them to and in
     favour of the Security until such time as all of the obligations of the
     Corporation to the Holder are satisfied in full, and providing that
     notwithstanding the granting of such Liens the holders of the
     Subordinated Notes will take reasonable steps to ensure that they are
     placed in a separate class of creditors than the Holder in any
     insolvency proceedings relating to the Corporation and if
     notwithstanding the foregoing they are placed in the same class of
     creditors they will assign their votes to the Holder so as to permit the
     Holder to vote against and defeat any restructuring plan in such
     insolvency proceedings; and

     (m)  any other Lien which the Holder after the date hereof approves in
     writing as a Permitted Encumbrance;

provided that nothing herein shall constitute or be interpreted as a
postponement or subordination of the Security to any security granted by the
Corporation in connection with such Permitted Encumbrances.

"PERMITTED HEDGING INDEBTEDNESS" has the meaning given to it in paragraph (c) of
the definition of Permitted Debt;

"PERMITTED PAYMENTS" means any payment, distribution, loan, advance or transfer
by a Restricted Subsidiary (as defined in the Subordinated Note Trust Indenture)
to the Corporation

                                       10
<PAGE>

or to another Restricted Subsidiary contemplated in paragraphs 4.13(a),(b) 
and (c) of the Subordinated Note Trust Indenture that, and only to the extent 
that, cannot be subject to a Payment Restriction pursuant to and as defined 
in Section 4.13 of the Subordinated Note Trust Indenture;

"PERSON" means any individual, partnership, limited partnership, joint venture,
syndicate. sole proprietorship, company or corporation with or without share
capital, unincorporated
association, trust, trustee, executor, administrator or other legal personal
representative, government or governmental authority or entity, however
designated or constituted;

"PREPAYMENT AMOUNT" means the principal amount of this Debenture which the
Corporation proposes to prepay under Section 2.4 plus a non-refundable fee of
one per cent (1%) of such principal amount being prepaid;

"PROCEEDS CONDITIONS" means the conditions precedent in favour of the Holder
that (i) the Kemess South Mine has produced concentrate over the immediately
preceding 30 day period, and is able to sustain and maintain such production
thereafter, of not less than 7500 short tons of concentrate yielding mineral
content that is acceptable to Glencore Ltd. pursuant to the Glencore Agreement
(without giving effect to any amendments thereof), (ii) at such time the Kemess
South Mine accounts payable of the Corporation do not exceed U.S.$15,000,000 and
(iii) at such time the Kemess South Mine accounts payable of the Corporation are
not overdue in accordance with their respective terms;

"PROPOSED LEASEBACK ASSETS" means one P & H model 2800XPB Electric Mining Shovel
(Serial No.28127) and one P & H model 100XP Rotary Blast Hole Drill (Serial
No.10036);

"PURCHASE AGREEMENT" means the Securities Purchase Agreement dated April 17,
1998 entered into by Trilon Financial Corporation and the Corporation in respect
of, inter alia, the purchase of the Debentures, as amended from time to time;

"PURCHASE MONEY SECURITY INTEREST" means any Lien given, assumed or arising by
operation of law, including capital leases, to provide or secure, or to provide
the obliger with funds to pay, the whole or any part of the consideration for
the acquisition of property where the principal amount of the obligation secured
by such Lien (i) is not in excess of the cost to the obliger of the property
encumbered thereby and (ii) is secured only by the property being acquired by
the obliger, and includes the renewal or refinancing of any such Lien upon the
same property provided that the indebtedness secured and the security therefor
are not increased thereby;

"ROYALTY AGREEMENT" has the same meaning given to such term in the Purchase
Agreement;

"ROYALTY DEBENTURE" has the same meaning given to such term in the Purchase
Agreement;

                                       11
<PAGE>

"SALE" has the meaning attributed to such term in section 5.3(e);

"SECURITY" means the Liens created by the Security Documents;

"SECURITY DOCUMENTS" means, collectively, the agreements, instruments and
documents delivered from time to time (both before and after the date of this
Debenture) to the Holder by the Corporation and APM and by any Subsidiary for
the purpose of creating, perfecting, preserving or protecting the security of
the Holder in respect of the Debenture and in respect of amounts outstanding
thereunder (including, without limitation, the documents referred to in Article
3, Section 5.1(v) and Section 5.1(x));

"SUBORDINATED NOTES" means the outstanding Secured 12.75% Senior Subordinated
Notes due 2006 in the aggregate principal amount of U.S. $175,000,000;

"SUBORDINATED NOTE TRUST INDENTURE" means the Trust Indenture dated as of August
12, 1996 among the Corporation, Kemess Mines Inc. and Mellon Bank, F.S.B.
relating to the Subordinated Notes, as amended by (i) the First Supplemental
Indenture, dated and effective as of December 31, 1997, (ii) the Second
Supplemental Indenture dated and effective as of January 31, 1998, (iii) the
Third Supplemental Indenture dated and effective as of May 19, 1998, (iv) the
Fourth Supplemental Indenture dated and effective the date hereof, and (v) the
Fifth Supplemental Indenture dated and effective the date hereof, each by and
between the Corporation and Chase Manhattan Trust Company, National Association,
the successor to Mellon Bank, F.S.B., as Trustee;

"SUBSIDIARIES" means all of the corporations listed on SCHEDULE E and any other
corporation or limited liability company which is or hereafter becomes directly
or indirectly controlled by the Corporation, and for the purposes of this
definition, the Corporation shall be deemed to control a corporation if the
Corporation beneficially owns, directly or indirectly, shares to which are
attached more than 50% of the voting rights ordinarily exercisable at meetings
of shareholders of such corporation, and the Corporation shall be deemed to own
beneficially shares beneficially owned by a corporation controlled by it, and so
on indefinitely, and the Corporation shall be deemed to control a limited
liability company where it owns more than 50% of the equity interests in such
limited liability company;

"TAXES" means all taxes of any kind or nature whatsoever including, without
limitation, income taxes, sales or value-added taxes, levies, stamp taxes,
royalties, duties, and all fees, deductions, compulsory loans and withholdings
imposed, levied, collected, withheld or assessed as of the date hereof or at any
time in the future, by any Governmental Body of or within Canada or any other
jurisdiction whatsoever having power to tax, together with penalties, fines,
additions to tax and interest thereon;

"THIS DEBENTURE" and "THE DEBENTURE" refer to this Debenture and, unless
otherwise expressly provided, not to any particular Article, section,
subsection, paragraph, clause, subdivision or other portion hereof, and includes
any and every instrument supplemental or

                                       12
<PAGE>

ancillary hereto or in implementation hereof;

"WINDY CRAGGY PROPERTY" means the mineral claims in and around Windy Craggy
mountain in the Tatshenshini/Alsek region of northwestern British Columbia, more
particularly described in SCHEDULE F hereto.

                                       13

<PAGE>



                                 ROYAL OAK MINES INC.


                                    as Corporation


                                         and



                           MONTREAL TRUST COMPANY OF CANADA


                                      as Trustee






- --------------------------------------------------------------------------------


                                   TRUST INDENTURE
                              PROVIDING FOR THE ISSUE OF
                           U.S. $50 MILLION 15% DEMAND BONDS

                                    JUNE 22, 1998


- --------------------------------------------------------------------------------
<PAGE>


                                TABLE OF CONTENTS

                                    ARTICLE 1
                                 INTERPRETATION
<TABLE>

<S>           <C>                                                         <C>
Section 1.1.  Defined Terms. . . . . . . . . . . . . . . . . . . . . . . .   1
Section 1.2.  Meaning of "outstanding" for Certain Purposes. . . . . . . .  11
Section 1.3.  Headings, etc. . . . . . . . . . . . . . . . . . . . . . . .  11
Section 1.4.  Deemed Notice of Indenture . . . . . . . . . . . . . . . . .  12
Section 1.5.  Judgment Currency. . . . . . . . . . . . . . . . . . . . . .  12
Section 1.6.  Applicable Law . . . . . . . . . . . . . . . . . . . . . . .  12
</TABLE>

                                      ARTICLE 2
                                      THE BONDS

<TABLE>

<S>           <C>                                                         <C>
Section 2.1.  Terms, Form and Denomination of Bonds. . . . . . . . . . . .  13
Section 2.2.  Issue of Bonds . . . . . . . . . . . . . . . . . . . . . . .  13
Section 2.3.  Signing of Bonds . . . . . . . . . . . . . . . . . . . . . .  14
Section 2.4.  Certification. . . . . . . . . . . . . . . . . . . . . . . .  14
Section 2.5.  Replacement of Bonds . . . . . . . . . . . . . . . . . . . .  15
Section 2.6.  Ownership of Bonds . . . . . . . . . . . . . . . . . . . . .  15
Section 2.7.  Payment of Principal and Interest. . . . . . . . . . . . . .  15
Section 2.8.  Taxes and Other Taxes. . . . . . . . . . . . . . . . . . . .  16
Section 2.9.  Exchange of Bonds. . . . . . . . . . . . . . . . . . . . . .  17
Section 2.10. Registration . . . . . . . . . . . . . . . . . . . . . . . .  17
</TABLE>

                                      ARTICLE 3
                                 REPLEDGING OF BONDS

<TABLE>

<S>           <C>                                                         <C>
Section 3.1.  Repledging of Bonds. . . . . . . . . . . . . . . . . . . . .  18
Section 3.2.  Outstanding. . . . . . . . . . . . . . . . . . . . . . . . .  18
</TABLE>

                                      ARTICLE 4
                                       SECURITY
<TABLE>

<S>           <C>                                                         <C>
Section 4.1.  Security . . . . . . . . . . . . . . . . . . . . . . . . . .  19
Section 4.2.  Effect of Liens. . . . . . . . . . . . . . . . . . . . . . .  20
Section 4.3.  Security Effective Notwithstanding Date of Advance . . . . .  20
Section 4.4.  Title to Collateral. . . . . . . . . . . . . . . . . . . . .  20
Section 4.5.  Further Assurances . . . . . . . . . . . . . . . . . . . . .  20
Section 4.6.  Registration . . . . . . . . . . . . . . . . . . . . . . . .  21
Section 4.7.  Release from Charge. . . . . . . . . . . . . . . . . . . . .  22
Section 4.8.  Application of Insurance Proceeds. . . . . . . . . . . . . .  22
Section 4.9.  Expropriation. . . . . . . . . . . . . . . . . . . . . . . .  22
Section 4.10. Priority of Liens. . . . . . . . . . . . . . . . . . . . . .  23
Section 4.11. Disposition of Assets. . . . . . . . . . . . . . . . . . . .  23
</TABLE>

                                     -i-


<PAGE>

<TABLE>

<S>           <C>                                                         <C>
Section 4.12. Royalty Interest . . . . . . . . . . . . . . . . . . . . . .  24
Section 4.13. Restricted Payments. . . . . . . . . . . . . . . . . . . . .  24
Section 4.14. Security . . . . . . . . . . . . . . . . . . . . . . . . . .  24
Section 4.15. Conflicts. . . . . . . . . . . . . . . . . . . . . . . . . .  24
</TABLE>

                                      ARTICLE 5
                             COVENANTS OF THE CORPORATION
<TABLE>

<S>           <C>                                                         <C>
Section 5.1.  Payment of Principal and Interest. . . . . . . . . . . . . .  25
Section 5.2.  Trustee's Remuneration and Expenses. . . . . . . . . . . . .  25
Section 5.3.  Insurance. . . . . . . . . . . . . . . . . . . . . . . . . .  25
Section 5.4.  Reorganization . . . . . . . . . . . . . . . . . . . . . . .  26
Section 5.5.  Limitation on Liens. . . . . . . . . . . . . . . . . . . . .  26
Section 5.6.  Performance of Covenants by Trustee. . . . . . . . . . . . .  26
</TABLE>

                                      ARTICLE 6
                               DEFAULT AND ENFORCEMENT
<TABLE>

<S>           <C>                                                         <C>
Section 6.1.  Events of Default. . . . . . . . . . . . . . . . . . . . . .  28
Section 6.2.  Acceleration on Default. . . . . . . . . . . . . . . . . . .  28
Section 6.3.  Enforcement by Trustee . . . . . . . . . . . . . . . . . . .  29
Section 6.4.  Enforcement by Bondholders . . . . . . . . . . . . . . . . .  29
Section 6.5.  Entry by Trustee . . . . . . . . . . . . . . . . . . . . . .  29
Section 6.6.  Appointment of Receiver. . . . . . . . . . . . . . . . . . .  30
Section 6.7.  Sale by Trustee. . . . . . . . . . . . . . . . . . . . . . .  31
Section 6.8.  Applying Bonds in Payment. . . . . . . . . . . . . . . . . .  31
Section 6.9.  Application of Proceeds of Sale or Realization . . . . . . .  32
Section 6.10.  Distribution of Proceeds. . . . . . . . . . . . . . . . . .  32
Section 6.11.  Persons Dealing with Trustee. . . . . . . . . . . . . . . .  33
Section 6.12.  Trustee Appointed Attorney. . . . . . . . . . . . . . . . .  33
</TABLE>

                                      ARTICLE 7
                              SATISFACTION AND DISCHARGE
<TABLE>

<S>           <C>                                                         <C>
Section 7.1.  Cancellation and Destruction . . . . . . . . . . . . . . . .  34
Section 7.2.  Release from Covenants . . . . . . . . . . . . . . . . . . .  34
</TABLE>

                                      ARTICLE 8
                                SUCCESSOR CORPORATIONS
<TABLE>

<S>           <C>                                                         <C>
Section 8.1.  Certain Requirements in Respect of Merger, etc . . . . . . .  35
Section 8.2.  Vesting of Powers in Successor . . . . . . . . . . . . . . .  35
Section 8.3.  Opinion of Counsel to be Given to Trustee. . . . . . . . . .  35
</TABLE>

                                     -ii-


<PAGE>

                                      ARTICLE 9
                              EXTRAORDINARY RESOLUTIONS
<TABLE>

<S>           <C>                                                         <C>
Section 9.1.  Powers Exercisable by Extraordinary Resolution . . . . . . .  36
Section 9.2.  Meaning of "Extraordinary Resolution". . . . . . . . . . . .  37
Section 9.3.  Powers Cumulative. . . . . . . . . . . . . . . . . . . . . .  37
Section 9.4.  Binding Effect of Resolutions. . . . . . . . . . . . . . . .  37
</TABLE>

                                      ARTICLE 10
                               SUPPLEMENTAL INDENTURES
<TABLE>

<S>           <C>                                                         <C>
Section 10.1.  Execution of Supplemental Indentures. . . . . . . . . . . .  38
</TABLE>

                                      ARTICLE 11
                                CONCERNING THE TRUSTEE
<TABLE>

<S>           <C>                                                         <C>
Section 11.1.  Conditions Precedent to Trustee's Obligation to Act . . . .  39
Section 11.2.  Evidence. . . . . . . . . . . . . . . . . . . . . . . . . .  39
Section 11.3.  Experts and Advisers. . . . . . . . . . . . . . . . . . . .  40
Section 11.4.  Action by Trustee to Protect Interests. . . . . . . . . . .  40
Section 11.5.  Trustee Not Required to Give Security . . . . . . . . . . .  40
Section 11.6.  Protection of Trustee . . . . . . . . . . . . . . . . . . .  40
Section 11.7.  Replacement of Trustee. . . . . . . . . . . . . . . . . . .  41
Section 11.8.  Conflict of Interest. . . . . . . . . . . . . . . . . . . .  41
Section 11.9.  Cash Collateral Held by the Trustee . . . . . . . . . . . .  42
Section 11.10. Certificate of Compliance . . . . . . . . . . . . . . . . .  42
Section 11.11. Legislation Relating to Indentures. . . . . . . . . . . . .  42
Section 11.12. Acceptance of Trust . . . . . . . . . . . . . . . . . . . .  42
</TABLE>

                                      ARTICLE 12
                                    MISCELLANEOUS
<TABLE>

<S>           <C>                                                         <C>
Section 12.1  Communications . . . . . . . . . . . . . . . . . . . . . . .  43
Section 12.2. Address of Record. . . . . . . . . . . . . . . . . . . . . .  43
Section 12.3. Indemnification of Trustee . . . . . . . . . . . . . . . . .  43
Section 12.4. Deposit of Securities. . . . . . . . . . . . . . . . . . . .  44
Section 12.5. Change of Name . . . . . . . . . . . . . . . . . . . . . . .  44
</TABLE>

                                      ARTICLE 13
                                    FORM OF BONDS
<TABLE>

<S>           <C>                                                         <C>
Section 13.1.  Form of Bonds . . . . . . . . . . . . . . . . . . . . . . .  46
</TABLE>

                                     -iii-


<PAGE>

                                      ARTICLE 14
                                      EXECUTION
<TABLE>

<S>           <C>                                                         <C>
Section 14.1.  Notarial Trust Deed . . . . . . . . . . . . . . . . . . . .  49
Section 14.2.  Counterparts. . . . . . . . . . . . . . . . . . . . . . . .  49
Section 14.3.  Formal Date . . . . . . . . . . . . . . . . . . . . . . . .  49
</TABLE>

                                     -iv-
<PAGE>
                                   TRUST INDENTURE


          TRUST INDENTURE dated June 22, 1998 between ROYAL OAK MINES INC. 
(the "CORPORATION") and MONTREAL TRUST COMPANY OF CANADA (the "TRUSTEE").

          WHEREAS the Corporation deems it necessary for its corporate 
purposes to deliver security to certain parties who have or may in future 
enter into hedging transactions with the Corporation;

          AND WHEREAS it is desirable to grant such security through a 
trustee acting under a trust indenture;

          AND WHEREAS in order to give effect to such security the 
Corporation proposes to issue bonds under the trust indenture;

          AND WHEREAS the Corporation under the laws relating to it is duly 
authorized to create, issue and secure the Bonds to be issued as provided in 
this Indenture;

          AND WHEREAS all things necessary have been done and performed to 
make the Bonds, when issued by the Corporation and certified by the Trustee, 
valid, binding and legal obligations of the Corporation with the benefits and 
subject to the terms of this Indenture and to make this Indenture a valid and 
binding indenture in accordance with its terms;

          AND WHEREAS the foregoing recitals and any statements contained in 
this Indenture or in the Bonds (except the representations in the certificate 
of the Trustee on the Bonds) are and shall be deemed to be made as 
representations and statements of fact by the Corporation;

          NOW THEREFORE, in consideration of the foregoing, the sum of $10.00 
and other good and valuable consideration, the receipt and sufficiency of 
which are acknowledged by the Corporation, the Corporation agrees as follows:

                                      ARTICLE 1
                                    INTERPRETATION

          SECTION 1.1.  DEFINED TERMS.   (1) As used in this Indenture and 
the Bonds, the following terms have the following meanings:

          "APM" means Arctic Precious Metals, Inc., a Nevada corporation.

          "AFFILIATE" has the meaning specified in the BUSINESS CORPORATIONS 
ACT (Ontario).

          "BONDS" means the bonds of the Corporation issued and certified 
under this Indenture and for the time being outstanding.

<PAGE>

                                     -2-


          "BONDHOLDERS" means the holders of the Bonds for the time being and 
from time to time.

          "BUSINESS DAY" means any day of the year, other than a Saturday, 
Sunday or other day on which banks are required or authorized to close in 
Toronto, Ontario.

          "CANADIAN DOLLARS" and "CDN. $" each mean lawful money of Canada.

          "CAPITAL LEASE OBLIGATIONS" means, as to any Person, the 
obligations of such Person to pay rent or other amounts under a lease that 
are required to be classified and accounted for as capital lease obligations 
in accordance with GAAP.

          "CERTIFICATE OF THE CORPORATION", "ORDER OF THE CORPORATION" and 
"REQUEST OF THE CORPORATION" mean, respectively, a written certificate, order 
and request signed in the name of the Corporation by any one of its Chairman, 
President, Chief Financial Officer or Secretary.

          "CERTIFIED RESOLUTION" means a copy of a resolution certified by 
the Secretary or any Assistant Secretary of the Corporation to have been duly 
passed by the Directors and to be in full force and effect on the date of the 
certification.

          "COLLATERAL" means the property, assets and undertaking of the 
Corporation and its Restricted Subsidiaries charged or in which the Trustee 
is granted a Lien pursuant to the Security and all replacements, 
substitutions and additions thereto and all income, gains and distributions 
thereon and proceeds thereof, of whatsoever nature and kind.

          "CORPORATION" means Royal Oak Mines Inc. and every Successor 
Corporation which has complied with the provisions of Article 8.

          "COUNSEL" means an attorney, barrister or solicitor or a firm of 
attorneys or barristers and solicitors retained by the Trustee or retained by 
the Corporation and acceptable to the Trustee.

          "DEBT" of any Person means all indebtedness including, without 
limitation (i) all indebtedness of such Person for and in respect of borrowed 
money, including obligations with respect to bankers' acceptances, letters of 
credit and letters of guarantee or indemnity; (ii) all indebtedness of such 
Person for the deferred purchase price of property or services represented by 
a note or other evidence of indebtedness or other security; (iii) all 
indebtedness created or arising under any conditional sale or other title 
retention agreement with respect to property acquired by such Person (even 
though the rights and remedies of the seller or lender under such agreement 
in the event of default are limited to the possession or sale of such 
property); (iv) all obligations under leases which, in accordance with GAAP 
(or accounting principles generally accepted in the jurisdiction of 
incorporation or organization of such Person), are recorded as capital 
leases, in respect of which such Person is liable as lessee; (v) all 
indebtedness or obligations of such Person pursuant to any interest rate 
swaps, currency swaps, commodity agreements and similar hedging agreements; 
and (vi) all Debt Guaranteed by 

<PAGE>
                                     -3-


such Person.

          "DEBT GUARANTEED" by any Person means Debt of the kinds referred to 
in (i) through (v) of the definition of Debt which is directly or indirectly 
guaranteed by such Person or which such Person has agreed (contingently or 
otherwise) with the creditor to purchase or otherwise acquire or assume, or 
in respect of which such Person has otherwise assured a credit against loss 
by means of an indemnity, security or bond.

          "DIRECTOR" means a director of the Corporation for the time being, 
and reference without more to action by the Directors means action by the 
directors of the Corporation as a board or, whenever duly empowered, action 
by a committee of the board.

          "DOCUMENTS" means the Security Documents and any other document 
delivered to the Bondholders by the Corporation or any Subsidiary pursuant to 
or in connection therewith.

          "ELIGIBLE CAPITAL LEASE OBLIGATIONS AND PURCHASE MONEY SECURITY 
INTERESTS" means (a) Capital Lease Obligations and Purchase Money Security 
Interests existing as at the date hereof or any renewals or replacements 
thereof on materially the same terms and in amounts not materially exceeding 
those existing as at the date hereof; and (b) Capital Lease Obligations and 
Purchase Money Security Interests incurred following the date hereof if the 
claims of the lessor or creditor thereunder are limited to recovery or 
repossession of the leased or financed property in question and if such 
leased or financed property is newly acquired by the Corporation.

          "ELIGIBLE HEDGING INDEBTEDNESS" means (i) Existing Hedging 
Indebtedness; and (ii) Indebtedness which is Permitted Indebtedness described 
in clauses (iii) or (iv) of the definition of "Permitted Indebtedness" in the 
Subordinated Indenture, as in effect on the date hereof.

          "EQUIVALENT CDN. $ AMOUNT" means, with respect to any amount of any 
currency other than Canadian Dollars, the amount of Canadian Dollars 
determined by using the quoted spot rate at which The Bank of Nova Scotia's 
principal office in Toronto, Ontario offers to provide Canadian Dollars in 
exchange for such other currency at 12:00 noon (Toronto time) on the date 
which such Equivalent Cdn. $ Amount is to be determined.

          "EVENT OF DEFAULT" has the meaning specified in Section 6.1.

          "EXCLUDED ASSETS" means the Windy Craggy Property.

          "EXISTING HEDGING INDEBTEDNESS" has the meaning ascribed to that 
term in the Subordinated Indenture, as in effect on the date hereof.

          "EXTRAORDINARY RESOLUTION" has the meaning specified in Section 9.2.

          "FISCAL YEAR" means a fiscal year of the Corporation commencing on 


<PAGE>

                                     -4-

January 1 of each calendar year and ending on December 31 of the same 
calendar year.

          "GAAP" means at any time, accounting principles generally accepted 
in Canada as recommended in the Handbook of the Canadian Institute of 
Chartered Accountants at the relevant time applied on a consistent basis.

          "GOVERNMENTAL ENTITY" means any (i) multinational, federal, 
provincial, state, municipal, local or other government, governmental or 
public department, central bank, court, commission, board, bureau, agency or 
instrumentality, domestic or foreign, (ii) any subdivision or authority of 
any of the foregoing, or (iii) any quasi-governmental or private body 
exercising any regulatory, expropriation or taxing authority under or for the 
account of any of the foregoing.

          "HEDGING COUNTERPARTY" means Bankers Trust Company, Macquarie Bank 
Limited, The Bank of Nova Scotia, and their respective successors and 
assigns, and any other Person with whom from time to time the Corporation has 
entered, or is proposing to enter into or incur Currency Agreements, Interest 
Swap Obligations, Foreign Exchange Obligations or Commodity Agreements, as 
such terms are defined in the Subordinated Indenture, as in effect on the 
date hereof.

          "IN AGREED FORM" means, with respect to any documents to be 
delivered by the Corporation or any Restricted Subsidiary to the Trustee 
under or pursuant to this Indenture, that such document is in substantially 
the same form and substance as the comparable document, if any, previously 
delivered or to be delivered contemporaneously by the Corporation or such 
Restricted Subsidiary to the Senior Bondholders.

          "INDENTURE", "HEREIN", "HEREBY", "HEREOF" and similar expressions 
mean and refer to this Indenture as supplemented or amended by any indenture, 
deed or instrument supplemental or ancillary hereto; and the expressions 
"ARTICLE" and "SECTION" followed by a number mean and refer to the specified 
Article or Section of this Indenture.

          "INSIDER" has the meaning specified in Section 1(1) of the 
SECURITIES ACT (Ontario).

          "KEMESS MINE" means the Kemess North Property and Kemess South Mine.

          "KEMESS NEWCO" means the wholly owned subsidiary of the Corporation 
to which, at the request of the Senior Bondholders, the Corporation will 
transfer ownership of the Kemess Mine and related assets.

          "KEMESS NEWCO GUARANTEE AND ASSUMPTION" means the guarantee and 
assumption to be given by Kemess Newco, in compliance with Section 5.4 of the 
Indenture, which guarantee and assumption shall be In Agreed Form and in form 
and substance satisfactory to the Trustee, based on the advice of Counsel, 
pursuant to which Kemess Newco will guarantee the obligations of the 
Corporation pursuant to the Bonds.

          "KEMESS NEWCO LIENS" means the present and future fixed and 
floating 

<PAGE>

                                     -5-

Liens to be granted by Kemess Newco to the Trustee in all of its property, 
assets and undertaking, including the Kemess Mine and related assets, which 
Lien shall be In Agreed Form and in form and substance satisfactory to the 
Trustee, based on the advice of Counsel, and which will secure the payment 
and performance by Kemess Newco of its obligations under the Kemess Newco 
Guarantee and Assumption.

          "KEMESS NORTH PROPERTY" means all present and future property, 
assets and undertaking comprising or relating to what is generally referred 
to as the Kemess North property in British Columbia, Canada, including, 
without limitation, all mineral claims and leases referred to in Schedule 
"B-1" to the Secured Debenture, all buildings, equipment, fixtures and other 
property and assets owned or leased by the Corporation (or in which the 
Corporation otherwise has an interest) situated or used at the Kemess North 
Property site, all operations, exploration and other activities carried on at 
such site and all permits, authorizations, licenses and similar approvals 
relating thereto.

          "KEMESS SOUTH MINE" means all present and future property, assets 
and undertaking comprising or relating to what is generally referred to as 
the Kemess South property in British Columbia, Canada, including, without 
limitation, all mineral claims and leases referred to in Schedule "B-2" to 
the Secured Debenture hereto, all buildings, equipment, fixtures and other 
property and assets owned or leased by the Corporation (or in which the 
Corporation otherwise has an interest) situated or used at the Kemess South 
Mine site, all operations, exploration and other activities carried on at 
such site and all permits, authorizations, licenses and similar approvals 
relating thereto.

          "KEMESS SOUTH RESOURCES LIMITED PARTNERSHIP" means the limited 
partnership of that name formed under the laws of the Province of British 
Columbia, and its successors and assigns. 

          "LIEN" means any mortgage, pledge, security interest, encumbrance, 
lien, charge or deposit arrangement or other arrangement or condition that in 
substance secures payment or performance of an obligation and shall include 
the interest of a vendor or lessor under any conditional sale agreement, 
capitalized lease or other title retention agreement.

          "NIGHTHAWK LAKE MINE" means the property covering approximately 
11,726 acres representing 254 claims in both Cody and Macklem Townships, 
Ontario, with most of the property held outright by the Corporation as staked 
mineral claims and the remaining property held through various agreements and 
subsidiary companies.

          "ORIGINAL CURRENCY" has the meaning specified in Section 1.5(1).

          "OTHER CURRENCY" has the meaning specified in Section 1.5(1).

          "OTHER TAXES" has the meaning specified in Section 2.8(2).

          "PAMOUR MINE" means the property (exclusive of the Hoyle 
properties) located in Whitney Township approximately 15 miles east of 
Timmins, Ontario which consisted of 38 patented mining claims and one license 
of occupation covering 

<PAGE>

                                     -6-

approximately 1,531 acres of mining and surface rights.

          "PERMITTED LIENS" mean

(a)       Liens on the property, assets or undertaking of the Corporation or 
of a Restricted Subsidiary that, in each case, secure indebtedness under the 
Senior Indentures in a principal amount not in excess of U.S.$120,000,000;

(b)       Liens securing indebtedness of a Person existing at the time that 
such Person is merged into or consolidated with the Corporation or a 
Restricted Subsidiary, provided that such Liens were in existence prior to 
the completion of such merger or consolidation and do not extend to any 
assets other than those of such Person;

(c)       Liens on property acquired by the Corporation or a Restricted 
Subsidiary, provided that such Liens were in existence prior to the 
contemplation of such acquisition and do not extend to any other property;

(d)       Liens on property, assets or undertaking of the Corporation that, 
in each case, secure the royalty payments to be made by the Corporation or a 
Restricted Subsidiary to Kemess South Resources Limited Partnership or, upon 
dissolution to the partners thereof, in respect of copper extracted and 
processed from the Kemess South property;

(e)       Liens on the property, assets or undertaking of the Corporation or 
a Restricted Subsidiary that, in each case, secure Capital Lease Obligations 
or Purchase Money Obligations;

(f)       Liens incurred, or pledges and deposits in connection with, 
workers' compensation, unemployment insurance and other social security 
benefits, and leases, appeal bonds and other obligations of like nature 
incurred by the Corporation or any Restricted Subsidiary in the ordinary 
course of business;

(g)       Liens imposed by law, including, without limitation, mechanics', 
carriers' warehousemen's, materialmen's, suppliers' and vendors' Liens, 
incurred by the Corporation or any Restricted Subsidiary in the ordinary 
course of business in a principal amount not in excess of at any time of Cdn. 
$15,000,000;

(h)       Liens for AD VALOREM, income or property taxes or assessments and 
similar charges which either are not delinquent or are being contested in 
good faith by appropriate proceedings for which the Corporation has set aside 
on its books reserves to the extent required by GAAP;

(i)       Liens on the property, assets or undertaking of the Corporation 
that, in each case, secure the obligations of the Corporation under the 
Royalty Agreement, including pursuant to the Royalty Debenture;

(j)       Liens on the property, assets or undertaking of Kemess Newco that 
secure indebtedness of the Corporation assumed by Kemess 

<PAGE>

                                     -7-

Newco on the transfer of Kemess Newco of ownership of the Kemess Mine and 
related assets;

(k)       Liens granted by the Corporation and its Restricted Subsidiaries to 
the Trustee pursuant to the terms hereof and the Security Documents;

(l)       the Subordinated Liens;

(m)       rights reserved to or vested in any Governmental Entity by the 
terms of any lease, licence, franchise, grant or permit, or by any statutory 
provision, to terminate the same, to take action which results in an 
expropriation, to designate a purchase of any property subject thereto or to 
require annual or other payments as a condition to the continuance thereof;

(n)       zoning restrictions, easements, rights of way, leases or other 
similar encumbrances or privileges in respect of real property which in the 
aggregate do not materially impair the use of such property by the 
Corporation or any Restricted Subsidiary in the operation of its business;

(o)       security given by the Corporation or a Restricted Subsidiary to a 
public utility or any Governmental Entity, when required by such utility or 
Governmental Entity in connection with the operations of the Corporation or 
such Restricted Subsidiary in the ordinary course of its business, which 
singly or in the aggregate do not materially detract from the value of the 
asset concerned or materially impair its use in the operation of the business 
of the Corporation or such Restricted Subsidiary;

(p)       the reservation in any original grants from any Governmental Entity 
of any land or interest therein and statutory exceptions to title; and

(q)       title, defects or irregularities which are of a minor nature and 
which do not materially detract from the value of the assets of the 
Corporation or its Restricted Subsidiaries encumbered thereby.

          "PERSON" means a natural person, partnership, corporation, 
joint-stock company, trust, unincorporated association, joint venture or 
other entity or Governmental Entity and pronouns which have a similarly 
extended meaning.

          "PLEDGE AGREEMENT" means an agreement between the Corporation and a 
Bondholder, pursuant to which a Bond issued hereunder is pledged to the 
Bondholder as security for the obligations specified therein.

          "PROPOSED LEASEBACK ASSETS"  means one P & H model 2800 x PB 
Electric Mining Shovel and one P & H model 100 x P Rotary Blast Hole Drill.

          "PURCHASE MONEY OBLIGATIONS" means indebtedness of the Corporation 
and its Restricted Subsidiaries incurred in connection with the purchase of 
assets; provided that any Lien so created in connection with such incurrence 
is limited solely to the property or assets so purchased.

<PAGE>

                                     -8-

          "PURCHASE MONEY SECURITY INTEREST"  means any Lien given, assumed 
or arising by operation of law, including capital leases, to provide or 
secure, or to provide the obliger with funds to pay, the whole or any part of 
the consideration for the acquisition of property where the principal amount 
of the obligation secured by such Lien (i) is not in excess of the cost to 
the obliger of the property encumbered thereby and (ii) is secured only by 
the property being acquired by the obliger, and includes the renewal or 
refinancing of any such Lien upon the same property provided that the 
indebtedness secured and the security therefor are not increased thereby.

          "RECEIVER'S CERTIFICATE" has the meaning specified in Section 6.6.

          "RESTRICTED SUBSIDIARY" means any Subsidiary of the Corporation 
that is not an Unrestricted Subsidiary.

          "ROYALTY AGREEMENT" means the agreement between the Corporation and 
Trilon Financial Corporation to be dated the date hereof pursuant to which 
Trilon Financial Corporation has been granted a royalty interest in the 
Kemess South Mine, as amended from time to time (other than amendments which 
violate Section 4.12 hereof).

          "ROYALTY DEBENTURE" means the debenture dated June 22, 1998, 
securing the obligations of the Corporation under the Royalty Agreement.

          "SALE" has the meaning specified in Section 4.11.

          "SECURED DEBENTURE" means the secured debenture to be delivered to 
the Trustee pursuant to Section 4.1(i) hereof.

          "SECURITY" means the security granted pursuant to Section 4.1 and 
any other security from time to time held by the Trustee for the benefit of 
the Bondholders.

          "SECURITY DOCUMENTS" means, collectively, the agreements, 
instruments and documents delivered from time to time to the Trustee by the 
Corporation, Kemess Newco and APM for the purpose of creating, perfecting, 
preserving or protecting the Liens in favour of the Trustee for the benefit 
of the Bondholders which secure the payment and performance by the 
Corporation and its Restricted Subsidiaries of their respective obligations 
under the Indenture, the Bonds and the Security Documents.  The Security 
Documents as the date hereof are described in Section 4.1(i) to (ix), hereof.

          "SENIOR BONDHOLDERS" means the holders of the Senior Security.

          "SENIOR INDENTURES" means the senior secured debenture, Series A, 
dated as of June 22, 1998 issued by the Corporation to Trilon Financial 
Corporation and the senior secured debenture, Series B, dated as of June 22, 
1998, issued by the Corporation to Northgate Exploration Limited, as from 
time to time amended (other than amendments which increase the principal 
amount due thereunder) and any debentures or other agreements which refinance 
or renew the amounts outstanding thereunder (provided that the principal 
amount outstanding thereunder is not increased).

<PAGE>

                                     -9-

          "SENIOR SECURITY" means the security from time to time granted by 
the Corporation or any of its Subsidiaries to secure the obligations of the 
Corporation or such Subsidiaries pursuant to the Senior Indentures.

          "SINGLE BONDHOLDER REQUEST" means an instrument signed in one or 
more counterparts by a Bondholder or Bondholders holding not less than U.S. 
$1 million in aggregate principal amount of the Bonds at the time outstanding.

          "SUBORDINATED INDENTURE" means the indenture dated as of August 12, 
1996 made by the Corporation as issuer, Kemess Mines Inc., as guarantor, and 
Mellon Bank, F.S.B., as trustee, as amended by supplemental indentures dated 
December 31, 1997, January 31, 1998 and May 19, 1998 and the date hereof, 
between the Corporation and Chase Manhattan Trust Company, National 
Association, as successor trustee, as further amended from time to time.

          "SUBORDINATED LIENS" means the present and future Liens held by a 
trustee or a collateral agent for and on behalf of the Subordinated 
Noteholders to secure payment and performance of the obligations of the 
Corporation and its Restricted Subsidiaries under the Subordinated Indenture, 
the Subordinated Notes and the Subordinated Security.

          "SUBORDINATED NOTES" means the notes issued pursuant to the 
Subordinated Indenture.

          "SUBORDINATED NOTEHOLDERS" means the holders from time to time of 
Subordinated Notes pursuant to the Subordinated Indenture.

          "SUBORDINATED SECURITY" means the security from time to time 
granted by the Corporation or any Subsidiary to secure the obligations of the 
Corporation pursuant to the Subordinated Indenture.

          "SUCCESSOR CORPORATION" has the meaning specified in Section 8.1.

          "SUBSIDIARIES" means all of the corporations listed on Schedule E 
to the Senior Indentures and any other corporation or limited liability 
company which is or hereafter becomes directly or indirectly controlled by 
the Corporation, and for the purposes of this definition, the Corporation 
shall be deemed to control a corporation if the Corporation beneficially 
owns, directly or indirectly, shares to which are attached more than 50% of 
the voting rights ordinarily exercisable at meetings of shareholders of such 
corporation, and the Corporation shall be deemed to own beneficially shares 
beneficially owned by a corporation controlled by it, and so on indefinitely, 
and the Corporation shall be deemed to control a limited liability company 
where it owns more than 50% of the equity interests in such limited liability 
company.

          "TAXES" has the meaning specified in Section 2.8(1).

          "TRUSTEE" means Montreal Trust Company of Canada and its successors 
for the time being in the trusts hereby created.

<PAGE>

                                     -10-

          "U.S. DOLLARS" and "U.S. $" each mean lawful money of the United 
States of America.

          "UNANIMOUS BONDHOLDERS' REQUEST" means an instrument signed in one 
or more counterparts by the Bondholders holding not less than 100% in 
aggregate principal amount of the Bonds at the time outstanding (excluding 
any such held by Affiliates or Insiders of the Corporation) requesting the 
Trustee to take some action or proceeding specified therein.

          "UNRESTRICTED SUBSIDIARY" means any Subsidiary of the Corporation 
designated as an Unrestricted Subsidiary by the board of directors of the 
Corporation; PROVIDED, HOWEVER, that (i) the Subsidiary to be so designated 
(x)(I) has total assets with a fair market value at the time of such 
designation of U.S. $1,000,000 or less, or (II) is being so designated prior 
to the acquisition by the Corporation of such Subsidiary by merger or 
consolidation with an Unrestricted Subsidiary, and (y) does not own any 
capital stock of the Corporation or any Restricted Subsidiary, (ii) if such 
Subsidiary is acquired by the Corporation, such Subsidiary is designated as 
an Unrestricted Subsidiary prior to the consummation of such acquisition, 
(iii) no Event of Default shall have occurred and be continuing, (iv) no 
portion of any Debt or any other obligation (contingent or otherwise) of such 
Subsidiary (a) is guaranteed by or is otherwise the subject of credit support 
provided by the Corporation or any of its Restricted Subsidiaries, (b) is 
recourse to or obligates the Corporation or any of its Restricted 
Subsidiaries in any way, or (c) subjects any property or asset of the 
Corporation or any of its Restricted Subsidiaries directly or indirectly, 
contingently or otherwise, to the satisfaction of such Debt or other 
obligation, (v) neither the Corporation nor any of its Restricted 
Subsidiaries has any contract, agreement, arrangement or understanding with 
such Subsidiary other than on terms as favourable to the Corporation or such 
Restricted Subsidiary as those that might be obtained at the time from 
Persons that are not Affiliates of the Corporation, and (vi) neither the 
Corporation nor any of its Restricted Subsidiaries has any obligations (a) to 
subscribe for additional shares of the capital stock of such Subsidiary, or 
(b) to maintain or preserve such Subsidiary's financial condition or to cause 
such Subsidiary to achieve certain levels of operating results.  Any such 
designation by the Corporation's board of directors shall be evidenced to the 
Trustee by filing with the Trustee a certified certificate stating that such 
designation complies with the foregoing conditions.  The Corporation's board 
of diectors may designate any Unrestricted Subsidiary to be a Restricted 
Subsidiary; PROVIDED, HOWEVER, that immediately after giving effect to such 
designation, no event of default shall have occurred and be continuing under 
the Senior Indentures or the Subordinated Indenture, assuming the incurrence 
by the Corporation and its Restricted Subsidiaries at the time of such 
designation of all existing Debt and Liens of the Unrestricted Subsidiary to 
be so designated as a Restricted Subsidiary.  In the event of any transaction 
described in Article 8 involving the Corporation in which the Corporation is 
not the Successor Corporation, the board of directors of the Successor 
Corporation may (x) prior to such transaction, designate any of its 
Subsidiaries, and any of the Corporation's Subsidiaries being acquired 
pursuant to such transaction that are not Restricted Subsidiaries, as 
Unrestricted Subsidiaries, and (y) after such transaction, designate any of 
its direct or indirect Subsidiaries as an Unrestricted Subsidiary under the 
same conditions and in the same manner as the Corporation under the terms of 
this 

<PAGE>

                                     -11-

Indenture.

          "WINDY CRAGGY PROPERTY"  means the mineral claims in and around 
Windy Craggy mountain in the Tatshenshini/Alsek region of northwestern 
British Columbia.

          (2)  Reference to any statute shall be deemed to be a reference to 
such statute as amended or re-enacted from time to time.

          (3)  Any references in this Indenture or in a Bond to gender 
includes all genders and words importing the singular number only shall 
include the plural and vice versa.

          SECTION 1.2.  MEANING OF "OUTSTANDING" FOR CERTAIN PURPOSES.  Every 
Bond certified and delivered by the Trustee shall be deemed to be outstanding 
until it shall be cancelled or delivered to the Trustee for cancellation, 
provided, however, that:

(a)       where a new Bond has been issued in substitution for a Bond which 
has been lost, destroyed or stolen, only one of them shall be counted for the 
purpose of determining the aggregate principal amount of Bonds outstanding; 
and

(b)       for the purpose of any provision of this Indenture entitling 
Bondholders to vote, sign consents, requests or other instruments or take any 
other action under this Indenture, Bonds owned by the Corporation or any 
Affiliate shall be disregarded, except that (i) for the purpose of 
determining whether the Trustee shall be protected in relying on any such 
vote, consent, request, instrument or other action, only the Bonds which the 
Trustee knows are so owned shall be so disregarded, and (ii) Bonds so owned 
which have been pledged in good faith other than to the Corporation or any 
Affiliate shall not be so disregarded if the pledgee establishes to the 
satisfaction of the Trustee the pledgee's right to vote such Bonds in its 
discretion free from the control of the Corporation or any Affiliate.

          SECTION 1.3.  HEADINGS, ETC.  The provision of a Table of Contents, 
the division of this Indenture into Articles and Sections and the insertion 
of headings are for convenient reference only and are not to affect the 
interpretation of this Indenture.

          SECTION 1.4.  DEEMED NOTICE OF INDENTURE.  Bondholders and all 
Persons claiming through or under them, respectively, shall be deemed to have 
notice of, and shall be bound by, the provisions of this Indenture.

          SECTION 1.5.  JUDGMENT CURRENCY.  (1) If, for the purposes of 
obtaining judgment in any court, it is necessary to convert a sum due 
hereunder or under a Bond in any currency (the "ORIGINAL CURRENCY") into 
another currency (the "OTHER CURRENCY"), the Corporation agrees, to the 
fullest extent that it may effectively do so, that the rate of exchange used 
shall be that at which, in accordance with normal banking procedures, the 
Trustee or the relevant Bondholder, as the case may be, could purchase the 
Original Currency with the Other Currency on the Business Day preceding that 
on which final judgment is given or, if permitted by applicable laws, on the 
day on which such judgment 


<PAGE>

                                     -12-

is paid or satisfied.

          (2)  The obligations of the Corporation in respect of any sum due 
in the Original Currency from it hereunder or under a Bond shall, 
notwithstanding any judgment in any Other Currency, be discharged only to the 
extent that on the Business Day following receipt by the Trustee or the 
relevant Bondholder of any sum adjudged to be so due in such Other Currency, 
the Trustee or such Bondholder may, in accordance with normal banking 
procedures, purchase the Original Currency with such Other Currency.  If the 
amount of the Original Currency so purchased is less than the sum originally 
due to the Trustee or such Bondholder in the Original Currency, the 
Corporation shall, as a separate obligation and notwithstanding any such 
judgment, indemnify the Trustee or such Bondholder, against such loss, and if 
the amount of the Original Currency so purchased exceeds the sum originally 
due to the Trustee or such Bondholder in the Original Currency, the Trustee 
or such Bondholder shall remit such excess to the Corporation.

          SECTION 1.6.  APPLICABLE LAW.  This Indenture and the Bonds shall 
be governed by and interpreted and enforced in accordance with the laws of 
the Province of Ontario and the federal laws of Canada applicable therein.

<PAGE>

                                     -13-

                                   ARTICLE 2
                                   THE BONDS

          SECTION 2.1.  TERMS, FORM AND DENOMINATION OF BONDS.  (1) The Bonds 
authorized to be issued pursuant to this Indenture shall consist of and be 
limited to an aggregate principal amount of U.S. $50 Million and shall be 
designated as the "U.S. $50 MILLION 15% DEMAND BONDS".

          (2)  The Bonds shall (i) be dated their issue date, (ii) be due and 
payable on demand, and (iii) bear interest (both before and after demand and 
judgment) from and including their issue date to but excluding the date of 
their payment in full at the rate of 15% per annum (including, in case of 
default, interest at the same rate on all amounts overdue payable on demand) 
calculated and compounded monthly in arrears from the issue date, and shall 
be paid in arrears on the last Business Day of each month beginning January 
of 1999.

          (3)  The Bonds shall (i) be issuable in registered form in integral 
multiples of U.S. $1 Million, (ii) be substantially in the form set out in 
Article 13 with appropriate insertions, and (iii) bear such distinguishing 
letters and numbers as the Trustee approves.

          (4)  Subject to this Indenture, all Bonds shall rank PARI PASSU 
among themselves and shall be secured equally and rateably.

          SECTION 2.2.  ISSUE OF BONDS.  (1) Bonds in the aggregate principal 
amount of U.S. $50 Million, in definitive form, are hereby created and may 
immediately be executed by the Corporation, certified by or on behalf of the 
Trustee and delivered by it to or upon the order of the Corporation.

          (2)  No Bond shall be issued, unless and until the Corporation and 
the Bondholder to whom the Bond is to be issued have certified to the Trustee 
as follows:

               (i)    the Bondholder is a Hedging Counterparty; and

               (ii)   upon issuance, the Bond will be pledged to the Bondholder
               pursuant to a Pledge Agreement to be held as security only for
               the obligations of the Corporation or its affiliates to the
               Bondholder pursuant to Eligible Hedging Indebtedness.

          (3)  A Bond shall only be obligatory or entitle the Bondholder to 
any benefit if, and to the extent, that such Bond is pledged to secure 
Eligible Hedging Indebtedness.

          (4)  Each of the Bondholders acknowledges that the indebtedness 
owed to a Hedging Counterparty is separate and unrelated to the indebtedness 
owed to any other Hedging Counterparty.  In the event that the Security, to 
the extent it secures any indebtedness to a Hedging Counterparty or any Bond 
pledged to such Hedging

<PAGE>

                                 -14-

Counterparty to secure such indebtedness (the "Affected Security"), is for 
any reason subordinated to any security for any other indebtedness (the 
"Other Security"), to which the Security, to the extent it secures Hedging 
Indebtedness to other Hedging Counterparties or the Bond pledged to such 
other Hedging Counterparties, (the "Unaffected Security") is not 
subordinated, then, notwithstanding subsection 2.1(4) or Section 4.2, the 
priority of the Unaffected Security shall not be affected and the Unaffected 
Security shall maintain its priority over the Other Security, and the holders 
of the Unaffected Security shall be entitled to participate in a distribution 
as if the Affected Security had not been subordinated.

          (5)  Except for the Bonds issued or to be issued to Bankers Trust 
Company, Macquarie Bank Limited and The Bank of Nova Scotia on or about the 
date hereof, no Bond shall be issued, or, if issued, shall be obligatory, 
unless the Trustee shall have received either (i) the consent of the existing 
Bondholders to such issuance expressed by way of Extraordinary Resolution; or 
(ii) each of the following:

(i)       an acknowledgment of the trustee under the Subordinated Indenture,
          substantially in the form of the acknowledgment received by the
          Trustee and Bankers Trust Company, Macquarie Bank Limited and The Bank
          of Nova Scotia on or about the date hereof;

(ii)      an opinion of Counsel that new Bonds will rank equally and rateably
          with the existing Bonds and will not prejudice the priority of the
          existing Bonds; and

(iii)     a certificate of The Bank of Nova Scotia or an opinion of counsel
          providing evidence that the principal amount of the Bonds outstanding
          after the issuance will not exceed U.S. $50 million less 150% of The
          Bank of Nova Scotia cash collateral.

          SECTION 2.3.  SIGNING OF BONDS.  The Bonds shall be under the 
corporate seal of the Corporation and shall be signed in the name and on 
behalf of the Corporation by any one of the Chairman or the President or the 
Chief Financial Officer, together with any one of the Secretary or any 
Assistant Secretary of the Corporation.  Notwithstanding that any of the 
individuals whose signature appears on any Bond as one of such officers may 
no longer hold office at the date of this Indenture, the date of the Bond or 
the date of certification and delivery, any Bond signed as aforesaid shall be 
valid and binding upon the Corporation.

          SECTION 2.4.  CERTIFICATION.  (1) No Bond shall be issued, or, if 
issued, shall be obligatory or entitle the Bondholder to any benefit, until 
it has been certified by or on behalf of the Trustee substantially in the 
form of the certificate set out in Article 13, or in some other form approved 
by the Trustee, and such certification by the Trustee upon any Bond shall be 
conclusive evidence as against the Corporation that the Bond so certified has 
been duly issued and is a valid obligation of the Corporation.

          (2)  The certificate of the Trustee on the Bonds shall not be
construed as a representation or warranty by the Trustee as to the validity of
this Indenture or of the Bonds (except the due certification and any other
warranties implied by law) and the Trustee shall not, in any respect, be liable
or answerable for the use made of the Bonds or any of them or of the proceeds of
the Bond.

<PAGE>

                                 -15-

          SECTION 2.5.  REPLACEMENT OF BONDS.  (1) If any of the Bonds are 
mutilated, defaced, lost, destroyed or stolen, the Corporation, subject to 
applicable law, shall issue and the Trustee, at its principal office in 
Toronto, Ontario or its principal office in Vancouver, British Columbia, 
shall certify and deliver a new Bond of like date and tenor as the one 
mutilated, defaced, lost, destroyed or stolen in exchange for, and in place 
of, and upon cancellation of, the mutilated or defaced Bond and in lieu of, 
and in substitution for, the lost, destroyed or stolen Bond.  The new Bond 
shall be entitled to the Security and rank equally in accordance with its 
terms with all other Bonds issued under this Indenture.

          (2)  The applicant for the issue of a new Bond pursuant to this 
Section 2.5 shall bear the cost of issue and, in the case of loss, 
destruction or theft shall, as a condition precedent to the issue, furnish 
the Corporation and the Trustee with such evidence of ownership and of the 
loss, destruction or theft as shall be satisfactory to the Corporation and 
the Trustee in their discretion.  The applicant may also be required to 
furnish an indemnity and surety bond in amount and form satisfactory to the 
Corporation and the Trustee in their discretion, and shall pay the reasonable 
charges of the Corporation and the Trustee.

          SECTION 2.6.  OWNERSHIP OF BONDS.  (1) A Bondholder may not 
transfer a Bond.

          (2)  Unless otherwise required by law, the Corporation and the 
Trustee may deem and treat the Bondholder of any Bond as the person entitled 
to the benefit thereof and neither the Corporation nor the Trustee shall be 
affected by any notice to the contrary, and payment of, or on account of the 
principal of, or any interest on, any Bond shall be made only to or upon the 
order in writing of the registered Bondholder.

          (3)  The Bondholder of any Bond shall be entitled to the principal 
or interest, or both, evidenced by the Bond, free from all equities or rights 
of set-off or counterclaim between the Corporation and the original or any 
intermediate Bondholder and all Persons may act accordingly.  The receipt of 
any Bondholder for any principal or interest shall be a good discharge to the 
Corporation and the Trustee for the same and neither the Corporation nor the 
Trustee shall be bound to inquire into the title of any Bondholder.

          SECTION 2.7.  PAYMENT OF PRINCIPAL AND INTEREST.  (1) The principal 
of the Bonds will be payable at the principal office of the Trustee in 
Vancouver, British Columbia on the Business Day after demand for payment has 
been made by a Bondholder.

          (2)  Interest accrued on the principal amount of any Bond, and 
interest on overdue interest, will be paid by the Corporation directly to the 
Bondholder of such Bond.  Upon request, the Corporation shall provide to the 
Trustee written confirmation of any amounts so paid.

          (3)  Interest shall be calculated at the rate mentioned in Section 
2.1(2) on the basis of the number of days elapsed in the year (which shall 
consist of three hundred and sixty-five (365) or three hundred and sixty-six 
(366) days, as the case may be).

<PAGE>

                                 -16-

          (4)  If the day on which interest on the Bonds falls due is not a 
Business Day, a Bondholder shall not be entitled to payment until the next 
following Business Day or to any interest or other sums in respect of the 
postponed payment.

          SECTION 2.8.  TAXES AND OTHER TAXES.  (1) All payments to a 
Bondholder under the Bond shall be made free and clear of and without 
deduction or withholding for any and all taxes, levies, imposts, deductions, 
charges or withholdings and all related liabilities (all such taxes, levies, 
imposts, deductions, charges, withholdings and liabilities being referred to 
as "Taxes") imposed by Canada (or any political subdivision or taxing 
authority of it), unless such Taxes are required by applicable Law to be 
deducted or withheld.  If the Corporation shall be required by applicable Law 
to deduct or withhold any such Taxes from or in respect of any amount payable 
under any Bond except, as provided in the next sentence, (i) the amount 
payable shall be increased (and for greater certainty, in the case of 
interest, the amount of interest shall be increased) as may be necessary so 
that after making all required deductions or withholdings (including 
deductions or withholdings applicable to any additional amounts paid under 
this Section 2.8), the Bondholder receives an amount equal to the amount it 
would have received if no such deduction or withholding had been made, (ii) 
the Corporation shall make such deductions or withholdings, and (iii) the 
Corporation shall immediately pay the full amount deducted or withheld to the 
relevant governmental entity in accordance with applicable Law.  The 
Corporation will not be required to pay any such additional amounts to any 
Bondholder by reason of that Bondholder being connected with Canada otherwise 
than merely by lending money to the Corporation pursuant to this Indenture.

          (2)  The Corporation agrees to immediately pay any present or 
future stamp or documentary taxes or any other excise or property taxes, 
charges, financial institutions duties, debits taxes or similar levies (all 
such taxes, charges, duties and levies being referred to as "Other Taxes") 
which arise from any payment made by the Corporation under any of the Bonds 
or from the execution, delivery or registration of, or otherwise with respect 
to, this Indenture or any of the Bonds.

          (3)  The Corporation shall indemnify the Bondholder for the full 
amount of Taxes or Other Taxes (including, without limitation, any Taxes or 
Other Taxes imposed by any jurisdiction on amounts payable by the Corporation 
under this Section 2.8) paid by the Bondholder and any liability (including 
penalties, interest and expenses) arising from or with respect to such Taxes 
or Other Taxes, whether or not they were correctly or legally asserted, 
excluding, in the case of any Bondholder, taxes imposed on its net income or 
capital taxes or receipts and franchise taxes.  The Corporation will not be 
required to indemnify a Bondholder for any Taxes or Other Taxes imposed by 
reason of a Bondholder being connected with Canada otherwise than merely by 
lending money to the Corporation pursuant to this Indenture.  Payment under 
this indemnification shall be made within 30 days from the date the 
Bondholder makes written demand for it.  A certificate as to the amount of 
such Taxes or Other Taxes submitted to the Corporation by the Bondholder 
shall be conclusive evidence, absent manifest error, of the amount due from 
the Corporation to the Bondholder, as the case may be.

          (4)  The Corporation shall furnish to the Bondholder the original 
or a certified copy of a receipt evidencing payment of Taxes or Other Taxes 
made by the Corporation within 30 days after the date of any payment of Taxes 
or Other Taxes.

<PAGE>

                                 -17-

          (5)  The provisions of this Section 2.8 shall survive the 
termination of the Indenture and the repayment of all amounts secured by this 
Indenture.

          SECTION 2.9.  EXCHANGE OF BONDS. (1) Bonds may be exchanged for 
other Bonds of the same aggregate outstanding principal amount as the Bonds 
so exchanged.

          (2)  Bonds may be exchanged only at the principal office of the 
Trustee in Toronto, Ontario or the principal office of the Trustee in 
Vancouver, British Columbia or at such other place or places (if any) as may 
from time to time be designated by the Corporation with the approval of the 
Trustee.  Any Bond tendered for exchange shall be surrendered to the Trustee. 
 The Corporation shall execute and the Trustee shall certify all Bonds 
necessary to carry out exchanges as aforesaid.  All Bonds surrendered for 
exchange shall be cancelled.

          (3)  The Corporation and a Bondholder may agree to reduce the 
principal amount of a Bond held by such Bondholder (without payment thereon) 
and the Trustee shall adjust the Bond and its records accordingly.

          (4)  The Trustee shall not charge a Bondholder for its services in 
connection with any transfer, exchange or adjustment of a Bond.  Payment of 
any applicable stamp or transfer tax or other governmental charge shall be 
made by the party requesting such exchange, transfer or adjustment as a 
condition precedent.

          SECTION 2.10.  REGISTRATION. (1) The Corporation shall cause to be 
kept by and at the principal office of the Trustee in Toronto, Ontario or in 
Vancouver, British Columbia a register in which shall be entered the names 
and addresses of Bondholders and particulars of the Bonds held by each of 
them. Such registration shall be noted on the Bonds by the Trustee or a new 
Bond shall have been issued by the Trustee.

          (2)  No transfer of a Bond shall be valid unless made on the 
register by the registered holder, its legal representatives or its attorney 
duly appointed by an instrument in writing in form and execution satisfactory 
to the Trustee, in compliance with such reasonable requirements as the 
Trustee may prescribe, and such transfer shall have been noted on such Bond 
by the Trustee or a new Bond shall have been issued by the Trustee.

          (3)  The transferee of a Bond shall, after the Bond together with 
any necessary endorsement on it or on any appropriate form of transfer is 
lodged with the Trustee, accompanied by a written designation, in form 
reasonably satisfactory to the Trustee, of the telecopy number or mailing 
address of the transferee and upon compliance with all other conditions in 
that behalf required by this Indenture or by law, be entitled to be entered 
on the register as the owner of such Bond.

          (4)  The register maintained pursuant to this Section 2.10 shall at 
all reasonable times be open for inspection by the Corporation, the Trustee 
or any Bondholder.

<PAGE>

                                     -18-

                                   ARTICLE 3
                              REPLEDGING OF BONDS

          SECTION 3.1.  REPLEDGING OF BONDS.  Bonds issued by the Corporation 
hereunder and acquired by the Corporation upon the release of a pledge may be 
cancelled or may be repledged to a Hedging Counterparty pursuant to a Pledge 
Agreement to secure Eligible Hedging Indebtedness of the Corporation 
provided, in any event, that the requirements of this Indenture are met.

          SECTION 3.2.  OUTSTANDING.  For purposes of determining whether a 
Bond can be issued within the limit set out in Section 2.1(1) hereof, (i) 
where the principal amount of a Bond has been reduced pursuant to Section 
2.9(3), only the reduced principal amount shall be taken into account; and 
(ii) the principal amount of a Bond which has been acquired by the 
Corporation upon the release of a pledge shall not be taken into account 
against the limit set out in Section 2.1(1) hereof, unless and until such 
Bond is repledged.

<PAGE>

                                     -19-

                                    ARTICLE 4
                                    SECURITY

          SECTION 4.1.  SECURITY.  As security for the due and punctual payment
and performance of all of its obligations to the Trustee and the Bondholders
under and in respect of this Indenture and the Bonds, the Corporation and its
Subsidiaries, as applicable, shall execute and deliver to the Trustee in each
case for the benefit of the Trustee and the Bondholders and in form and
substance satisfactory to the Trustee, valid and enforceable Liens against all
present and after acquired property, assets and undertaking of the Corporation
and the Restricted Subsidiary, except the Excluded Assets, all In Agreed Form,
including without limitation, the following:

(i)       a secured debenture by the Corporation creating a fixed and floating
          Lien on all of the Corporation's present and after acquired property,
          assets and undertaking including, without limitation, fixed and
          specific Liens on all property, assets and undertaking comprising the
          Kemess Mine, and assignments of the Corporation's interests in all
          material mining claims, concessions and leases in any way relating to
          the Kemess Mine;

(ii)      a general security agreement by the Corporation creating a Lien on all
          of the Corporation's present and after acquired property, assets and
          undertaking;

(iii)     a limited guarantee by APM of the obligations of the Corporation
          hereunder to the Bondholders;

(iv)      a general security agreement by APM creating a Lien on all of APM's
          present and after acquired property, assets and undertaking;

(v)       an assignment by the Corporation of its rights and interests in its
          right to receive distributions from the Kemess South Resources Limited
          Partnership;

(vi)      an assignment by the Corporation of its rights and interests in the
          Hydro contracts relative to the Kemess Mine;

(vii)     a pledge of all the shares in the capital of APM held by the
          Corporation;

(viii)    a moveable hypothec in form suitable for registration in Quebec; and

(ix)      such other agreements and documents as may be necessary or desirable
          to grant to the Trustee or the Collateral Agent valid and enforceable
          Liens on all of the property, assets and undertaking of the
          Corporation other than the Excluded Assets.

Notwithstanding anything to the contrary contained in the foregoing, the
Corporation shall not be obligated to register the Liens against any real
property or mineral claims consisting of:  (a) the Pamour Mine, the Nighthawk
Lake Mine and the mines generally 


<PAGE>

                                     -20-

known as Giant, HopeBrook and Colomac; and (b) the Corporation's currently 
existing exploration properties not in any way related to the Kemess Mine.  
The Corporation shall register Liens against the Pamour Mine and the 
Nighthawk Lake Mine in favour of the Trustee In Agreed Form should the 
Corporation grant or register Liens against (either or both) such mines in 
favour of the Senior Bondholders.  The Corporation shall ensure that all of 
the Security Documents are executed and delivered in accordance with this 
Section 4.1 such that the Liens created thereby are perfected in all 
jurisdictions and at all times required to maintain such perfection by the 
Trustee for the benefit of the Bondholders.

          SECTION 4.2.  EFFECT OF LIENS.  The Trustee shall have and hold the 
Security Documents and the Collateral and all rights hereby and thereby 
conferred unto the Trustee and its successors and assigns forever, but in 
trust, nevertheless, for the equal benefit and security of the Bondholders 
(subject to Section 2.2(4) hereof) without any preference or priority between 
them, subject to this Indenture, and with the powers and authorities and 
subject to the terms and conditions set forth in this Indenture and in the 
Security Documents.  The Corporation shall furnish to the Trustee, promptly 
after the execution and delivery of the Security Documents and promptly after 
the execution and delivery of any amendment hereto or thereto or any 
instrument of further assurance, an opinion of Counsel stating that, in the 
opinion of such Counsel, subject to customary exclusions and exceptions 
reasonably acceptable to the Trustee, either (i) the Security Documents, any 
such amendment and all other instruments of further assurance have been 
properly recorded, registered and filed and all such other action has been 
taken to the extent necessary to make effective the Liens intended to be 
created by the Security Documents and to perfect such Liens, and reciting the 
details of such action or referring to prior opinions of Counsel in which 
such details are given, or (ii) no such action is necessary to make the Liens 
intended to be created by the Security Documents effective.

          SECTION 4.3.  SECURITY EFFECTIVE NOTWITHSTANDING DATE OF ADVANCE.  
The Security shall be effective whether the moneys secured by this Indenture 
are advanced before or after or at the same time as the issue of any of the 
Bonds intended to be secured or before or after or upon the date of the 
execution of this Indenture.

          SECTION 4.4.  TITLE TO COLLATERAL.  The Corporation covenants with 
the Trustee and the Bondholders that (i) it lawfully owns and is lawfully 
possessed of that part of the Collateral described as the Kemess Mine and, 
except for Permitted Liens, will lawfully own and be lawfully possessed of 
all other property hereafter subjected to the Security, (ii) it has good 
right and lawful authority to mortgage, pledge, charge and grant a security 
interest in the same, (iii) such property is and will remain free and clear 
of any Lien except Permitted Liens, and (iv) it will warrant and defend its 
title to such property against the claims and demands of all Persons.

          SECTION 4.5.  FURTHER ASSURANCES.  The Corporation covenants with 
the Trustee that:
     
(a)       it shall from time to time execute all such assurances and do all 
such things as, in the opinion of Counsel, are necessary or of advantage for 
validly giving to the Trustee (so far as may be possible under applicable 
laws) the specific mortgage, pledge and charge intended to be created 
pursuant to the Security upon the Collateral, whether 


<PAGE>

                                     -21-

now owned or hereafter acquired by the Corporation; and

(b)       it shall from time to time, after the Security has become 
enforceable and the Trustee has determined or become bound to enforce it, 
execute and give all such assurances and do all things as the Trustee may 
reasonably require for facilitating the realization of the Collateral and for 
exercising all the powers, authorities and discretions conferred upon the 
Trustee and for confirming to any purchaser of any of the Collateral, whether 
sold by the Trustee or by judicial proceedings, title to the assets so sold.

          SECTION 4.6.  REGISTRATION.  The Corporation covenants with the 
Trustee that:

(a)       immediately after the execution of the Security Documents and each 
supplemental instrument, the Corporation shall register, file or record the 
same (or a deed in notarial form or a financing statement or such other 
document as may be appropriate under applicable law) in all offices where 
such registration, filing or recording is necessary or of advantage to 
perfect the Security created or intended so to be and the Corporation shall 
deliver to the Trustee certificates establishing each such registration, 
filing or recording, and shall do, observe and perform all matters and things 
necessary or expedient to be done, observed and performed for the purpose of 
creating and maintaining the Security as valid and effective security;

(b)       notwithstanding anything contained in Section 4.6(a), but subject 
to the last paragraph of Section 4.1, the Corporation shall not be required 
to register or record the Security Documents or any other instrument against 
the title to any real or immoveable property of the Corporation or in which 
the Corporation has any interest other than the Kemess Mine unless the 
Trustee (upon the request of Bondholders holding a majority in the principal 
amount of the Bonds) shall so request, in which event, and provided that the 
Corporation has first registered or recorded Liens in favour of the Senior 
Bondholders, the Corporation (so far as may be possible under the local laws 
of the places where the real or immoveable property is situate) shall 
immediately register or record the Security Documents and any supplemental 
instrument which may be required for such purpose, against the title to the 
real or immoveable property in respect of which the request has been made;

(c)       the Corporation shall not register, record or file the security in 
favour of the Subordinated Noteholders in any office, or against the title to 
any real or immovable property, or register any financing statement in 
respect of the security in favour of the Subordinated Noteholders, or consent 
to any of such actions, unless the Corporation has registered the Security 
Documents in priority to the security in favour of the Subordinated 
Noteholders; and

(d)       the Corporation shall, within five Business Days of the 
registration, recordation or filing of any security in favour of the Senior 
Bondholders, notify the Trustee of the particulars of any such registration, 
recordation or filing.

          SECTION 4.7.  RELEASE FROM CHARGE.  Until the Security has become 
enforceable and the Trustee has determined or become bound to enforce the 
same, the 

<PAGE>

                                     -22-

Trustee shall upon the Request of the Corporation execute and deliver to the 
Corporation such documents as, in the opinion of Counsel, may be necessary or 
desirable to release from the Security any lands, buildings, plant, machinery 
or equipment, whether moveable or immoveable, licenses or rights, or any 
interest therein, or any other property or assets sold or disposed of by the 
Corporation in accordance with Section 4.11(b), (c), (d) or (e) without 
payment to the Trustee of any proceeds.  Any Request of the Corporation shall 
be accompanied by a Certificate of the Corporation evidencing that the sale 
or disposition is not in breach of any provision of this Indenture.

          SECTION 4.8.  APPLICATION OF INSURANCE PROCEEDS.  The Corporation 
shall, from time to time until payment in full of the Bonds and the 
satisfaction and discharge of this Indenture, within 10 days following the 
receipt by the Corporation of any payment of proceeds of any insurance 
required to be maintained pursuant to Section 5.3 on account of each separate 
loss, damage or injury to any tangible property subject to the Security 
(unless such proceeds (or an equivalent amount) have been (i) expended or 
committed by the Corporation for the repair or replacement of the damaged 
property, with the prior written consent of the Trustee, and the Corporation 
has furnished to the Trustee evidence satisfactory to the Trustee of the 
expenditure or commitment, or (ii) paid to or for the benefit of the Senior 
Bondholders or any other holder of a Permitted Lien in the damaged or lost 
property ranking prior to the Security) apply, or to the extent the Trustee 
is loss payee under any insurance policy, irrevocably direct the Trustee to 
apply, without premium or penalty, the proceeds to the payment of principal 
or interest, or both, under the Bonds in the Trustee's sole discretion.  No 
consent of the Trustee shall be required for the application by the 
Corporation of insurance proceeds to the repair or replacement of property 
unless (i) the aggregate amount of insurance proceeds on account of loss, 
damage or injury in any twelve-month period exceed Can. $5,000,000, or (ii) 
an Event of Default (or any circumstance exists which, with the giving of 
notice, the lapse of time, or both, would constitute an Event of Default) has 
occurred and is continuing.

          SECTION 4.9.  EXPROPRIATION.  In the event of any expropriation or 
similar taking of any part of the Collateral or of any sale or conveyance by 
the Corporation in lieu of an expropriation or similar taking and in 
reasonable anticipation of such event, the Trustee may release the property 
so taken, sold or conveyed upon the deposit with the Trustee of a sum equal 
to (i) the net proceeds of, or compensation for, the expropriation or similar 
taking, or (ii) in case of a sale or conveyance in lieu of and in reasonable 
anticipation of such taking, the greater of (y) the net proceeds of the sale 
of the property to be released, or (z) the fair market value of the property 
as appraised by an independent appraiser acceptable to the Trustee.  For 
purposes hereof "net proceeds" shall mean proceeds after costs of disposition 
and payments to the Senior Bondholders and any other holder of a Permitted 
Lien in the subject property ranking prior to the Security.  The Trustee 
shall be fully protected in giving a release upon being furnished with an 
opinion of Counsel to the effect that the property has been lawfully 
expropriated or taken or, in the case of an anticipatory sale or conveyance, 
sold or conveyed as aforesaid, and in case of any anticipatory sale or 
conveyance, upon being furnished with a Certified Resolution stating that, in 
the opinion of the Directors, such sale or conveyance was in lieu of and in 
reasonable anticipation of expropriation or similar taking and was in the 
best interests of the Corporation.  In any proceedings for the taking of any 
part of the Collateral by expropriation or similar taking the Trustee may be 
represented by Counsel.

<PAGE>

                                     -23-


          SECTION 4.10.  PRIORITY OF LIENS.  Notwithstanding the time of 
grant of Liens, or the time of registering, filing or recording the same (or 
a notice or financing statement in respect thereof) (i) the Liens and 
beneficial rights of each of the Senior Bondholders in the assets and 
properties of the Corporation and its Restricted Subsidiaries and the 
proceeds thereof shall be senior and prior to the Liens and beneficial rights 
of the Trustee and any Bondholder therein, and (ii) the Liens and beneficial 
rights of the Trustee and any Bondholder in the assets and properties of the 
Corporation and its Restricted Subsidiaries shall be and are hereby 
subordinated and postponed to the Liens and beneficial rights of each of the 
Senior Bondholders therein.  Each Bondholder, by its acceptance of Bonds 
issued hereunder, authorizes and expressly directs the Trustee on its behalf 
to take such action as may be necessary or appropriate to effectuate, as 
between the Senior Bondholders and the Bondholders, the aforesaid 
subordination and postponement of the Liens and beneficial rights of the 
Trustee and any Bondholder therein, and appoints the Trustee its 
attorney-in-fact for such purposes.

          SECTION 4.11.  DISPOSITION OF ASSETS.  The Corporation shall not 
and shall not permit any of its Restricted Subsidiaries to consummate any 
sale, lease, consignment or other disposition (collectively a "Sale") of 
assets or property other than:

(a)       Any Sale of properties or assets of the Corporation or a Restricted 
Subsidiary to a direct or indirect wholly-owned Restricted Subsidiary of the 
Corporation;

(b)       (i) any Sale of machinery, equipment, other personal property or 
other similar property that has become worn out, obsolete or unserviceable; 
(ii) any Sale or abandonment of any personal property the use of which is no 
longer necessary or desirable in or material to the conduct of the business 
of the Corporation and its Restricted Subsidiaries; (iii) any Sale of any 
real property or an interest therein which is undeveloped and held by the 
Corporation or a Restricted Subsidiary for exploration purposes and is not 
material to the conduct of the business of the Corporation and its Restricted 
Subsidiaries; and (iv) any Sale of any assets and properties of the 
Corporation or a Restricted Subsidiary, other than assets and properties 
described in clauses (i), (ii) and (iii) above, and other than assets which 
comprise or are in any way material to the Kemess South Mine, if the proceeds 
from all such Sales in aggregate do not exceed U.S. $15,000,000 in any 
calendar year;

(c)       any Sale of the Proposed Leaseback Assets in connection with a 
sale-leaseback transaction;

(d)       any Sale of inventory of the ordinary course of business; and

(e)       any Sale of properties or assets not described in Sections 4.14 
(a), (b), (c) or (d) above, provided that the Corporation obtains the prior 
written consent of the Bondholders expressed by Extraordinary Resolution of 
any such Sale.

          SECTION 4.12.  ROYALTY INTEREST.  The Corporation shall not, 
without the prior written consent of the Trustee, amend the Royalty Agreement 
so as to increase the Initial Royalty Rate (as described therein) or amend 
Section 2.2 and 7.2(c) thereof.

<PAGE>

                                     -24-

          SECTION 4.13.  RESTRICTED PAYMENTS.  The Corporation and its 
Subsidiaries shall not, directly or indirectly, pay principal, interest, fees 
or any other amount in respect of any Debt of the Corporation or a Subsidiary 
other than on account of the Senior Indentures, the Eligible Hedging 
Indebtedness or other Debt secured by Liens ranking prior to the Security on 
liquidation, provided that if no Event of Default has occurred and is 
continuing, the foregoing shall not prohibit the Corporation, or a Restricted 
Subsidiary, from (i) paying interest on the Subordinated Notes in accordance 
with the terms and conditions contained in the Subordinated Indenture, (ii) 
paying amounts due and payable in the ordinary course in respect of other 
Debt other than Debt under the Subordinated Indenture; or (iii) in the case 
of a Restricted Subsidiary, from making payment to the Corporation or another 
Restricted Subsidiary.  The Corporation will not establish, designate or 
allow to exist a Restricted Subsidiary unless the property and undertaking of 
such Restricted Subsidiary is charged in favour of the Trustee with security 
with the same or better priority as the charges granted by the Corporation to 
the Trustee.

          SECTION 4.14.  SECURITY.  Each Bondholder, by its acceptance of a 
Bond hereunder, represents and warrants that it does not hold security in 
respect of Eligible Hedging Indebtedness of the Corporation or of a 
Restricted Subsidiary other than (i) pursuant to or in connection with the 
Bond or Bonds pledged to such Bondholder, this Indenture and the Security, 
and any other security which may now or hereafter be granted hereunder; and 
(ii) in the case of The Bank of Nova Scotia, cash collateral which does not 
and will not exceed U.S. $3,000,000.

          SECTION 4.15.  CONFLICTS.  In the event of any conflict or
inconsistency between a provision of this Indenture and a provision of the
Security Documents, the provision of this Indenture shall prevail.

<PAGE>

                                     -25-

                                   ARTICLE 5
                         COVENANTS OF THE CORPORATION

          SECTION 5.1.  PAYMENT OF PRINCIPAL AND INTEREST.  The Corporation 
covenants that it will punctually pay or cause to be paid the principal of 
and interest on each of the Bonds at the place, at the respective times and 
in the manner provided in this Indenture and in the Bonds.

          SECTION 5.2.  TRUSTEE'S REMUNERATION AND EXPENSES.  The Corporation 
covenants that it will pay to the Trustee from time to time reasonable 
remuneration for its services and will pay or reimburse the Trustee upon its 
request for all reasonable expenses, disbursements and advances incurred or 
made by the Trustee in the administration or execution of these trusts 
(including the reasonable compensation and the disbursements of its Counsel 
and all other advisors and assistants not regularly in its employ), both 
before and after any Event of Default, until all duties of the Trustee shall 
be finally and fully performed and paid, except any such expense, 
disbursement or advance as may arise from the wilful misconduct or bad faith 
of the Trustee.  Any amount due under this Section 5.2 and unpaid 30 days 
after request for payment shall bear interest from the expiration of such 30 
days at a rate per annum equal to the prime rate from time to time reported 
by The Bank of Nova Scotia or its successor.  After the occurrence and during 
the continuance of an Event of Default, all amounts so payable and the 
interest on such amounts shall be payable out of any funds coming into the 
possession of the Trustee in priority to any payments on the Bonds.

          SECTION 5.3.  INSURANCE.  (1) The Corporation shall (i) keep all of 
its properties adequately insured against loss or damage by fire and other 
hazards, at all times with responsible insurance carriers, in amounts and on 
terms as are customary in the mining industry, (ii) maintain adequate 
insurance at all times with responsible insurance carriers, in amounts and on 
such terms as are customary in the mining industry against liability on 
account of damage to persons and property, and (iii) maintain adequate 
insurance covering such other risks as are customary in the mining industry.  
All insurance covering tangible property subject to the Security shall 
provide that, in the case of each separate loss, the full amount of insurance 
proceeds in excess of U.S. $500,000 shall be payable to the Trustee as 
secured party or otherwise as its interest may appear and subject to the 
rights of any prior encumbrancer, to be applied in accordance with Section 
4.8, and shall further (iv) provide for at least 30 days' prior written 
notice to the Trustee of its cancellation or substantial modification, (v) 
provide that, in respect of the interests of the Trustee, the insurance shall 
not be invalidated by any action or inaction of the Corporation or any other 
Person, (vi) insure the Trustee's interests regardless of any breach of or 
violation by the Corporation or any other person of any warranties, 
declarations, or conditions contained in the insurance, and (vii) provide 
that the Trustee shall have the right (but not the obligation) to cure any 
default by the Corporation under the insurance.  Each liability policy 
required pursuant to this Section 5.3 shall name the Trustee as an additional 
insured and shall be primary without right of contribution from any other 
insurance which is carried by the Trustee to the extent that the other 
insurance provides it with contingent or excess liability insurance, or both, 
with respect to its interest in the Collateral and shall expressly provide 
that all of its provisions, except the limits of liability (which shall be 
applicable to all insureds as a group) and except liability 


<PAGE>

                                     -26-

for premiums (which shall be solely a liability of the Corporation), shall 
operate in the same manner as if there were a separate policy covering each 
insured.

          (2)  The Corporation shall, from time to time upon request by the 
Trustee, promptly furnish or cause to be furnished to the Trustee evidence, 
in form and substance satisfactory to the Trustee, of the maintenance of all 
insurance required to be maintained by Section 5.3(1), including, but not 
limited to, originals or copies as the Trustee may request of policies, 
certificates of insurance, riders and endorsements relating to such insurance 
and proof of premium payments.

          SECTION 5.4.  REORGANIZATION.  Except as set forth herein, the 
Corporation shall not dispose of any interest in the Kemess Mine or the right 
to the production or income thereof.  The Corporation may transfer Kemess 
Mine to Kemess Newco on the terms set out herein.  If the Corporation 
proposes to transfer all or a material interest in the Kemess Mine and the 
rights and benefits associated therewith to Kemess Newco, the Corporation 
shall, prior to, or contemporaneously with, any such transfer(s), cause 
Kemess Newco to assume and guarantee to the Trustee on behalf of the 
Bondholders all of the Corporation's obligations, liabilities and 
indebtedness under or pursuant to the Indenture and the Bonds, pledge 
(subject to the prior Liens held by the Senior Bondholders) to the Trustee on 
behalf of the Bondholders all of the Corporation's shares in the capital of 
Kemess Newco and any debt, equity or other consideration received by the 
Corporation in respect of such transfer, provide to the Trustee on behalf of 
the Bondholders such additional security, agreements and assurances 
(including a confirmation from the Trustee under the Subordinated Indenture 
that any acknowledgment of subordination and postponement will continue to 
apply after such transfer) as it may reasonably request to ensure that the 
Liens in favour of the Trustee on such assets are valid, enforceable and 
prior ranking to all other Liens, claims and interests in such assets except 
for such Liens as are held by the Senior Bondholders or as ranked prior to 
the Security immediately prior to the disposition, and obtain and deliver an 
opinion of counsel as to the enforceability of the Kemess Newco Guarantee and 
Assumption and validity and perfection of the Kemess Newco Liens and such 
other consents, certificates and authorizations as the Trustee, on the advice 
of Counsel, may require in connection with the foregoing.

          SECTION 5.5.  LIMITATION ON LIENS.  The Corporation shall not, and 
shall not cause or permit any of its Restricted Subsidiaries to, directly or 
indirectly, create, incur, assume or permit or suffer to exist or remain in 
effect any Liens (other than Permitted Liens) upon any properties or assets 
of the Corporation or of any of its Restricted Subsidiaries whether owned or 
hereafter acquired, or on any income or profits therefrom, or assign or 
otherwise convey any right to receive income or profits thereon.

          SECTION 5.6.  PERFORMANCE OF COVENANTS BY TRUSTEE.  If the 
Corporation fails to perform any of its covenants in this Indenture, the 
Trustee may itself perform any of the covenants capable of being performed by 
it, but shall be under no obligation to do so.  All sums so expended or 
advanced by the Trustee shall be repayable as provided in Section 5.2.  No 
such performance or advance by the Trustee shall be deemed to relieve the 
Corporation of any default. 


<PAGE>

                                     -27-

                                   ARTICLE 6 
                           DEFAULT AND ENFORCEMENT

          SECTION 6.1.  EVENTS OF DEFAULT.  The Security shall become 
enforceable in each and every of the following events (each of which is an 
"EVENT OF DEFAULT"):
     
(a)       if the Corporation fails to pay forthwith upon demand the principal 
or interest of any Bond;

(b)       if the Subordinated Indenture is amended in any way which purports 
to have the effect of prejudicing the priority of the Security, or any action 
is taken in furtherance of any such amendment;

(c)       if any registration, recordation or filing is effected in respect 
of the Subordinated Security, in respect of any asset or in any jurisdiction, 
and no such registration, recordation or filing has been made in priority to 
such in respect of the Security in favour of the Trustee hereunder;

(d)       if the Corporation fails to comply with its obligations under 
Section 5.4 or 5.5;

(e)       if the Corporation fails to observe or perform any other covenant 
or condition on its part to be observed or performed and, after notice in 
writing has been given by the Trustee to the Corporation specifying the 
default and requiring the Corporation to cure it, the Corporation fails to 
cure the default within a period of 30 days unless the Trustee has agreed to 
a longer period, (having regard to the subject matter of default) and in such 
event, within the period agreed to by the Trustee.

          SECTION 6.2.  ACCELERATION ON DEFAULT.  If any Event of Default 
shall occur and be continuing, the Trustee may, in its discretion, and shall, 
upon receipt of a Single Bondholders Request requiring it to do so, declare 
the principal of, and interest on, the Bonds and other monies secured by this 
Indenture to be due and payable and the same shall immediately become due and 
payable to the Trustee on demand (and without any further demand being 
required under any of the Bonds).  The Corporation shall on such demand 
immediately pay to the Trustee, for the benefit of the Bondholders, the 
principal of, and accrued and unpaid interest on, amounts in default, in each 
case in accordance with Article 2, on the Bonds and all other moneys secured 
by this Indenture, together with subsequent interest at the rates borne by 
the Bonds from the date of the declaration until payment is received by the 
Trustee, such subsequent interest to be payable at the times and places and 
in the moneys mentioned in and according to the tenor of the Bonds. Such 
payment when made shall be deemed to have been made in discharge of the 
Corporation's obligations under this Indenture and any moneys so received by 
the Trustee shall be applied in the same manner as if they were proceeds of 
realization of the Collateral.

          SECTION 6.3.  ENFORCEMENT BY TRUSTEE.  Whenever the Security has 
become enforceable and so long as the Security remains enforceable, but 
subject to the provisions of any Extraordinary Resolution:

<PAGE>

                                     -28-

(a)       the Trustee, in the exercise of its discretion, may proceed to 
realize the Security and enforce the rights of the Trustee and the 
Bondholders under the Security by entry as provided in Section 6.5; or by the 
appointment of a receiver or receiver and manager under the provisions of 
Section 6.6; or by sale under the provisions of Section 6.7; or by 
proceedings in any court of competent jurisdiction for the appointment of a 
receiver or receiver and manager or for sale of all or any part of the 
Collateral or for foreclosure; or by any other action, suit, remedy or 
proceedings authorized or permitted by this Indenture or by law or by equity; 
and may file such proofs of claim and other papers or documents as may be 
necessary or advisable in order to have the claims of the Trustee and the 
Bondholders lodged in any bankruptcy, winding-up or other judicial 
proceedings relative to the Corporation; and no such remedy for the 
realization of the Security or for the enforcement of the rights of the 
Trustee or the Bondholders shall be exclusive of or dependent on any other 
remedy but any one or more of the remedies may from time to time be exercised 
independently or in combination;

(b)       all rights of action may be enforced by the Trustee without the 
possession of any of the Bonds or their production at any trial or other 
related proceedings; and

(c)       upon receipt of a Unanimous Bondholders' Request and upon being 
indemnified and funded to its satisfaction as provided in Section 11.1, the 
Trustee shall exercise or take such one or more of the aforesaid remedies as 
the Unanimous Bondholders' Request may direct or, if such Unanimous 
Bondholders' Request contains no direction, as the Trustee may deem expedient.

          SECTION 6.4.  ENFORCEMENT BY BONDHOLDERS.  A Bondholder who has 
requested that the other Bondholders execute and deliver a Unanimous 
Bondholders Request, but has failed to obtain the consent of one or more of 
the other Bondholders may, acting for the benefit of itself and all the other 
Bondholders, take proceedings in any court of competent jurisdiction such as 
the Trustee might have taken under Section 6.3, but (subject to the foregoing 
right to take proceedings in a court of competent jurisdiction for the 
appointment of a receiver or receiver and manager or any other remedy) in no 
event shall a Bondholder or combination of Bondholders have any right to take 
or exercise any power of sale or appoint a receiver or receiver and manager 
or exercise or take any other remedy or proceedings out of court; it being 
understood and intended that no one or more Bondholders shall have any right 
in any manner whatsoever to affect, disturb or prejudice the Security by its 
or their action or enforce any right under this Indenture or under any Bond 
except subject to the conditions and in the manner herein provided, and that 
all powers and trusts shall be exercised and all proceedings at law which are 
instituted and maintained by the Trustee shall be instituted and maintained 
for the equal and rateable benefit of all Bondholders.

          SECTION 6.5.  ENTRY BY TRUSTEE.  Whenever the Security has become 
enforceable and so long as the Security remains enforceable, the Trustee 
shall have the right by its officers, agents or attorneys to enter into and 
upon and to take possession of all or any part of the Collateral and possess 
and use the same subject to the Security, with full power to carry on and 
manage the business operations of the Corporation to receive the rents, 
incomes and profits of such property and business, to pay all expenses of 

<PAGE>

                                     -29-

operating the property and of carrying on the business and all charges 
against the property and business ranking in priority to the Bonds or payment 
of which may be necessary to preserve or protect the property.  The remainder 
of the moneys so received and not required for any of the above purposes 
shall be applied by the Trustee in the manner provided in Section 6.10.  The 
foregoing is, however, subject to the condition that the Trustee shall, if 
all Events of Default existing to the knowledge of the Trustee have been 
cured, restore such property and business to the Corporation, and pay to it 
the remainder of the moneys so received after payment of all interest then 
due in accordance with Article 2 upon the Bonds. In case of any return of 
property to the Corporation, the Security shall no longer be or be deemed to 
be enforceable by reason of the Event of Default whereby the right of entry 
became vested in the Trustee, and any declaration that may have been made by 
the Trustee pursuant to Section 6.2 as a result of such Event of Default 
shall be cancelled.  Any part of the Collateral which has become subject to a 
fixed charge solely by reason of the crystallization of a floating charge 
shall be freed from the fixed charge, but shall subsequently be subject to 
the floating charge provided for in the Security, as fully and to the same 
extent as though no Event of Default had occurred.

          SECTION 6.6.  APPOINTMENT OF RECEIVER.  Whenever the Trustee 
determines under the applicable provisions of the Security and the provisions 
of Section 6.3 to appoint a receiver (which term shall include a receiver and 
manager) the following provisions shall apply:
     
(a)       the appointment shall be made by resolution of the board of 
directors of the Trustee or an executive committee of the Trustee and a copy 
of the resolution, certified by an officer of the Trustee under its corporate 
seal, shall be evidence for all purposes of such appointment; the Trustee may 
from time to time in the same manner remove any receiver so appointed and 
appoint another in its stead; in making any such appointment the Trustee 
shall be deemed to be acting as the attorney of the Corporation;

(b)       any appointment may be limited to a part or parts of the Collateral 
or may extend to the whole of the Collateral;

(c)       every receiver may, in the discretion of the Trustee, be vested 
with all or any of the powers and discretions of the Trustee;

(d)       the Trustee may from time to time fix the remuneration of every 
receiver and direct its payment out of the Collateral;

(e)       the Trustee may from time to time require any receiver to give 
security for the performance of its duties and may fix the nature and amount 
of such security, but shall not be bound to require such security;

(f)       every receiver may, with the consent in writing of the Trustee, 
borrow money for the purposes of carrying on the business of the Corporation 
or for the maintenance, protection or preservation of the Collateral, and the 
receiver may issue certificates (the "RECEIVER'S CERTIFICATES") for such sums 
as will, in the opinion of the Trustee, be sufficient for obtaining, upon the 
security of the Collateral, the amounts from time to time required; the 
Receiver's Certificates may be payable either to order or to 


<PAGE>

                                     -30-

bearer and may be payable at such time or times as to the Trustee may appear 
expedient, and shall bear interest as therein provided; the receiver may 
sell, pledge or otherwise dispose of the same in such manner as to the 
Trustee may seem advisable, and may pay a reasonable commission on a sale; 
the amounts from time to time payable pursuant to the Receiver's Certificates 
shall form a charge upon the Collateral in priority to the Bonds;

(g)       every receiver shall, so far as concerns responsibility for its 
acts or omissions, be deemed to be the agent of the Corporation, and in no 
event the agent of the Trustee, and the Trustee shall not, in making or 
consenting to such appointment, incur any liability to the receiver for its 
remuneration or otherwise;

(h)       except as may be otherwise directed by the Trustee, all moneys from 
time to time received by a receiver shall be paid over to the Trustee to be 
held by it on the trusts of these presents; and

(i)       the Trustee may pay to a receiver any moneys constituting part of 
the Collateral to be applied for the purposes of this Indenture, and the 
Trustee may from time to time determine what funds the receiver may keep in 
hand with a view to the performance of its duty as a receiver.

          SECTION 6.7.  SALE BY TRUSTEE.  If the Trustee decides to realize 
on the Security by sale, the Trustee shall have the right with or without 
entry to sell and dispose of all or any part of the Collateral en bloc or in 
parcels, at public auction or by tender or by private contract and at such 
time or times and on such terms and conditions, which shall, at the Trustees 
option, include, in case of sale by auction or tender, a reasonable reserve 
bid, as the Trustee shall determine.  The Trustee may make any such sale, 
whether by auction, tender or private contract, either for cash or upon 
credit or partly for one and partly for the other, upon such reasonable 
conditions as to terms of payment as it may deem proper; it may also rescind 
or vary any contract of sale that may have been entered into and resell with 
or under any of the powers conferred herein; it may also stop, suspend or 
adjourn any sale from time to time and hold the sale as adjourned without 
further notice; also deliver to the purchaser or purchasers of all or any 
part the Collateral a good and sufficient deed or deeds for the same.

          SECTION 6.8.  APPLYING BONDS IN PAYMENT.  Upon any sale of all or 
any part of the Collateral, whether made under power of sale or pursuant to 
foreclosure or other judicial proceedings, the Trustee or any one or more of 
the Bondholders or any agent or representative may become purchasers and may, 
in paying the purchase price, deliver the Bonds in place of cash to the 
amount which would, upon distribution of the net proceeds of such sale, be 
payable; and in case the amounts so payable are less than the amount due, the 
Bonds shall be returned after being properly marked or stamped to show 
partial payment; provided, however, that any such purchaser shall pay in cash 
the amount necessary to provide for the payments mentioned in Section 6.9(a).

          SECTION 6.9.  APPLICATION OF PROCEEDS OF SALE OR REALIZATION.  
Except as otherwise expressly provided, the moneys arising from any sale or 
other realization of the whole or any part of the Collateral, whether through 
a sale by the Trustee or by judicial process or otherwise, shall be held by 
the Trustee and applied, together with any other 

<PAGE>

                                     -31-

moneys in the hands of the Trustee available for such purposes as follows:
     
(a)       firstly, in payment of all charges on the Collateral (except those 
subject to which the sale or realization was made), ranking in priority to 
the Bonds;

(b)       secondly, in payment of the expenses referred to in Section 5.2;

(c)       thirdly, reasonable costs of realization not included in (a), above;

(d)       fourthly, in payment of the principal of the Bonds and, after 
payment of such principal, any accrued and unpaid interest on the Bonds, in 
that order, or in such other order of priority as between principal and 
interest as may be directed by Extraordinary Resolution; and

(e)       the surplus (if any) shall be paid to the Corporation or its 
assigns, unless otherwise provided by law.

          SECTION 6.10.  DISTRIBUTION OF PROCEEDS.  Payments to Bondholders 
pursuant to Section 6.9 shall be made as follows:
     
(a)       at least 10 days' notice of each payment shall be given in the 
manner provided in Article 12 specifying the time when and the place where 
the Bonds are to be presented, the amount of the payment and the application 
of the payment as between principal and interest;

(b)       payment of any Bond shall be made upon presentation of the Bond at 
any one of the places specified in the notice and any Bond paid in full shall 
be surrendered, otherwise a memorandum of the payment shall be endorsed on 
it; but the Trustee may, in its discretion, dispense with presentation and 
surrender or endorsement in any special case upon receipt of an indemnity 
acceptable to it;

(c)       from and after the date of payment specified in the notice, 
interest shall accrue only on the amount owing on each Bond after giving 
credit for the amount of the payment specified in such notice unless it is 
properly presented on or after the date so specified and payment is not made;

(d)       the Trustee shall not be required to make any interim payment to 
Bondholders unless the moneys in its hands, after reserving such amount as 
the Trustee may think necessary to provide for the payments mentioned in 
Section 6.9(a), exceeds 5% of the principal amount of the Bonds;

(e)       payments on account of the Bonds shall be made rateably to each 
Bondholder based on the lesser of (i) the Eligible Hedging Indebtedness which 
is owed to such Bondholder and is secured by a pledge of such Bond pursuant 
to the applicable Pledge Agreement; and (ii) the principal amount of the Bond 
held by such Bondholder;

(f)       if as a result of distributions made in accordance with paragraph 
(e), above, (i) the Eligible Hedging Indebtedness of any Hedging Counterparty 
has been paid 


<PAGE>

                                     -32-

in full, (ii) one or more other Hedging Counterparties have received the full 
amount of the Bond pledged to such Hedging Counterparty but have not received 
payment in full of their Eligible Hedging Indebtedness, and (iii) the Hedging 
Counterparties pursuant to a Secondary Pledge Agreement hold a security 
interest in the Bond held by the Hedging Counterparty whose claim has been 
paid in full, then, distributions shall thereafter be made rateably to the 
remaining Bondholders based upon the lesser of their remaining Eligible 
Hedging Indebtedness and the amount of the Bond held by them, whether by way 
of primary or secondary pledge (provided that a secondary pledge will only be 
taken into account where the primary pledge has been fully discharged); and

(g)       no Bondholder who is the Corporation or a Subsidiary or an 
Affiliate or Insider of the Corporation or a Subsidiary shall be entitled to 
participate in any distribution until the claims of all other Bondholders 
have been satisfied in full.

          SECTION 6.11.  PERSONS DEALING WITH TRUSTEE.  No person dealing 
with the Trustee or its agents shall be concerned to enquire whether the 
Security has become enforceable, or whether the powers which the Trustee is 
purporting to exercise have become exercisable, or whether any money remains 
due, or as to the necessity or expediency of the stipulations and conditions 
subject to which any sale has been made, or otherwise as to the propriety or 
regularity of any sale or of any other dealing by the Trustee with the 
Collateral, or to see to the application of any money paid to the Trustee.

          SECTION 6.12.  TRUSTEE APPOINTED ATTORNEY.  Effective from and 
after an Event of Default and so long as such Event of Default is continuing, 
the Corporation irrevocably appoints the Trustee to be the attorney of the 
Corporation in the name and on behalf of the Corporation to execute and do 
any deeds, transfers conveyances, assignments, assurances and things which 
the Corporation ought to execute and do, and has not executed or done, under 
the covenants and provisions contained in this Indenture and generally to use 
the name of the Corporation in the exercise of all or any of the powers 
conferred on the Trustee. 

<PAGE>

                                     -33-

                                   ARTICLE 7   
                         SATISFACTION AND DISCHARGE

          SECTION 7.1.  CANCELLATION AND DESTRUCTION.  All matured Bonds 
shall be cancelled and delivered to or to the order of the Trustee 
immediately after payment.  All Bonds (whether in temporary or definitive 
form) cancelled or required to be cancelled under this or any other provision 
of this Indenture may be destroyed by or under the direction of the Trustee 
(in the presence of a representative of the Corporation, if the Corporation 
requests) and the Trustee shall prepare or cause to be prepared and shall 
retain a certificate of such destruction and deliver a duplicate copy to the 
Corporation.

          SECTION 7.2.  RELEASE FROM COVENANTS.  Upon proof being given to 
the reasonable satisfaction of the Trustee that (i) the principal of all the 
Bonds and interest thereon and other moneys payable hereunder have been paid 
or satisfied, or (ii) all the Bonds have matured or have been called for 
redemption, or upon the Trustee having been given irrevocable instructions by 
the Corporation to give notice of redemption of all the Bonds, and (iii) such 
payment or redemption, or both, has been duly and effectually provided for by 
payment to the Trustee or otherwise, and (iv) upon payment of all costs, 
charges and expenses properly incurred by the Trustee in relation and the 
remuneration of the Trustee has been paid, or upon provision satisfactory to 
the Trustee being made for such payment, the Trustee shall, at the request 
and at the expense of the Corporation, execute and deliver to the Corporation 
such deeds or other instruments as shall be required to (v) evidence the 
satisfaction and discharge of the Security in accordance with Section 4.11, 
and (vi) release the Corporation from its covenants except pursuant to 
Section 2.8 and those relating to the indemnification of the Trustee. 

<PAGE>

                                     -34-

                                   ARTICLE 8   
                            SUCCESSOR CORPORATIONS

          SECTION 8.1.  CERTAIN REQUIREMENTS IN RESPECT OF MERGER, ETC.  The 
Corporation shall not enter into any transaction (whether by way of 
reconstruction, reorganization, amalgamation, transfer, sale, lease or 
otherwise) whereby all or substantially all of its undertaking, property and 
assets would become the property of any other person or, in the case of any 
such amalgamation, of the continuing Corporation unless, but may do so if:
     
(a)       such other person or continuing corporation (the "SUCCESSOR 
CORPORATION") is a corporation incorporated under the laws of Canada or any 
of its provinces;

(b)       the Successor Corporation executes, prior to or contemporaneously 
with the completion of the transaction, a supplemental indenture and such 
other instruments (if any) as are satisfactory to the Trustee and, in the 
opinion of Counsel, are necessary or advisable to evidence the assumption by 
the Successor Corporation of the Corporation's liability for the due and 
punctual payment of all the Bonds and any interest thereon and all other 
moneys payable under this Indenture and the covenant of the Successor 
Corporation to pay the same and its agreement to observe and perform all the 
covenants and obligations of the Corporation under this Indenture;

(c)       such transaction shall, to the satisfaction of the Trustee and in 
the opinion of Counsel, be upon such terms as preserve and do not impair in 
any respect the rights and powers of the Trustee or of the Bondholders; and

(d)       no condition or event shall exist in respect of the Successor 
Corporation at the time of such transaction and after giving full effect to 
the transaction which constitutes or would constitute an Event of Default.

          SECTION 8.2.  VESTING OF POWERS IN SUCCESSOR.  Whenever the 
conditions of Section 8.1 have been observed and performed, the Trustee shall 
execute and deliver the supplemental indenture provided for in Article 10 and 
the Successor Corporation shall possess and from time to time may exercise 
each and every right and power of the Corporation under this Indenture in the 
name of the Corporation or otherwise and any act or proceeding by any 
provision of this Indenture required to be done or performed by any directors 
or officers of the Corporation may be done and performed with like force and 
effect by the like directors or officers of such Successor Corporation.

          SECTION 8.3.  OPINION OF COUNSEL TO BE GIVEN TO TRUSTEE.  The 
Trustee shall receive an opinion of Counsel as conclusive evidence that any 
such reorganization, consolidation, amalgamation, sale, conveyance or lease 
and any such assumption complies with the provisions of this Article 8.

<PAGE>

                                     -35-

                                   ARTICLE 9 
                           EXTRAORDINARY RESOLUTIONS

          SECTION 9.1.  POWERS EXERCISABLE BY EXTRAORDINARY RESOLUTION.  In 
addition to all other powers stated in this Indenture to be exercisable by 
Extraordinary Resolution, the Bondholders shall have the following powers 
exercisable from time to time by Extraordinary Resolution:
     
(a)       the power to agree to any modification, abrogation or compromise or 
arrangement of the rights of the Bondholders or the Trustee against the 
Corporation or against the undertaking, property and assets of the 
Corporation, whether such rights arise under this Indenture, the Bonds or 
otherwise;

(b)       the power to direct or authorize the Trustee to exercise any power, 
right, remedy or authority given to it by this Indenture or the Bonds in any 
manner specified in such Extraordinary Resolution or to refrain from 
exercising any such power, right, remedy or authority;

(c)       the power to assent to any modification or change in, or omission 
from, these provisions or any supplemental instrument which shall be agreed 
to by the Corporation and to authorize the Trustee to concur in or execute 
any deed or supplemental instrument embodying the modification, change or 
omission;

(d)       the power, with the approval of the Corporation, to sanction the 
exchange of the whole or any part of the Bonds for other obligations of the 
Corporation or another corporation;

(e)       the power to waive and direct the Trustee to waive any default of 
the Corporation either unconditionally or upon any conditions specified in 
such Extraordinary Resolution whether or not the Security has become 
enforceable, and where a Bondholder has commenced a proceeding to enforce the 
Security by reason of such default, to restrain the Bondholder from 
continuing the proceeding and to stay or discontinue the same, upon payment 
of the costs, charges or expenses reasonably and properly incurred by the 
Bondholder in that connection;

(f)       the power to restrain any Bondholder from taking or instituting any 
suit, action or proceeding for the purpose of enforcing payment of the 
principal of or interest on the Bonds, or for the appointment of a liquidator 
or a receiver or a trustee in bankruptcy or to have the Corporation wound-up 
or for any other remedy under this Indenture;

(g)       the power to sanction any scheme for the reorganization of the 
Corporation or for the consolidation, amalgamation or merger of the 
Corporation with any other corporation and for the selling or leasing of all 
or substantially all of the undertaking, property and assets of the 
Corporation;

(h)       the power to approve the form and content of any document to be 
delivered to or by the Trustee, including the form of any Security to be 
delivered to the 

<PAGE>

                                     -36-

Trustee pursuant to Section 4.1 or otherwise;

(i)       the power to direct the Trustee as to the adequacy of the insurance 
maintained by the Corporation;

(j)       the power to authorize and direct the Trustee to execute and 
deliver such subordinations, priorities agreements, inter-creditor agreements 
and acknowledgments as the Extraordinary Resolution may specify; and

(k)       the power to amend, alter and repeal any Extraordinary Resolution 
previously adopted by the Bondholders.

          SECTION 9.2.  MEANING OF "EXTRAORDINARY RESOLUTION". The expression 
"EXTRAORDINARY RESOLUTION" when used in this Indenture means an instrument in 
writing signed in one or more counterparts by both (a) the Bondholders of a 
principal amount of the Bonds of not less than 75% of the Bonds which are 
outstanding at such time, excluding any of such as are then held by 
Affiliates or Insiders of the Corporation, and (b) each of Bankers Trust 
Company, Macquarie Bank Limited and The Bank of Nova Scotia, if they are then 
Bondholders.

          SECTION 9.3.  POWERS CUMULATIVE.  Any one or more of the powers or 
any combination of the powers in this Indenture stated to be exercisable by 
the Bondholders by Extraordinary Resolution or otherwise may be exercised 
from time to time and the exercise of any one or more of such powers or any 
combination of powers from time to time shall not be deemed to exhaust the 
right of the Bondholders to exercise such power or powers or combination of 
powers then or any power or powers or combination of powers thereafter from 
time to time.

          SECTION 9.4.  BINDING EFFECT OF RESOLUTIONS.  Every Extraordinary 
Resolution adopted in accordance with Section 9.2 shall be binding upon all 
the Bondholders, whether they are signatories or not, and each and every 
Bondholder and the Trustee (subject to any provisions for its indemnity) 
shall be bound to give effect accordingly to every such Extraordinary 
Resolution. 

<PAGE>

                                     -37-


                                   ARTICLE 10                
                             SUPPLEMENTAL INDENTURES

          SECTION 10.1.  EXECUTION OF SUPPLEMENTAL INDENTURES.  From time to 
time the Corporation (when authorized by a resolution of its Directors) and 
the Trustee may, subject to the provisions of this Indenture, and the 
Corporation and the Trustee shall, when so directed by or pursuant to this 
Indenture, execute and deliver indentures or other supplemental instruments, 
which shall form a part of this Indenture, for any one or more or all of the 
following purposes:
     
(a)       evidencing the succession of Successor Corporations to the 
Corporation and the covenants of and obligations assumed by such Successor 
Corporations in accordance with the provisions of Article 8;

(b)       giving effect to any Extraordinary Resolution;

(c)       providing for the issue of Bonds in forms or denominations other 
than those herein provided for and for the exchange of Bonds of different 
forms and denominations, and making modifications in the form of the Bonds 
which, in the opinion of the Trustee, does not affect their substance;

(d)       making any additions to, deletions from or alterations in the 
provisions of this Indenture which, in the opinion of Counsel, may from time 
to time be necessary or advisable to conform the same to legislation or to 
the requirements of any stock exchange;

(e)       adding such additional covenants, enforcement provisions, release 
provisions and other provisions as, in the opinion of Counsel, are necessary 
or advisable, provided that, in the opinion of the Trustee, the rights of the 
Trustee and of the Bondholders are not materially prejudiced;

(f)       correcting or rectifying any ambiguities, defective provisions, 
errors or omissions, provided that, in the opinion of the Trustee, the rights 
of the Trustee and of the Bondholders are not materially prejudiced; and

(g)       any other purpose not inconsistent with the terms of this 
Indenture, provided that, in the opinion of the Trustee, the rights of the 
Trustee and of the Bondholders are not materially prejudiced. 

<PAGE>

                                      -38-

                                   ARTICLE 11
                             CONCERNING THE TRUSTEE

          SECTION 11.1.  CONDITIONS PRECEDENT TO TRUSTEE'S OBLIGATION TO ACT. 
(1) The Trustee is not bound to give any notice or do or take any act, action 
or proceeding by virtue of the powers conferred on it unless and until it is 
required so to do under the terms of this Indenture; nor shall the Trustee be 
required to take notice of any default other than in payment of any moneys 
required to be paid to it, unless and until notified in writing of such 
default. In the absence of any such notice, the Trustee may, for all purposes 
of this Indenture, conclusively assume that the Corporation is not in default 
with respect to the payment of principal of, or interest on, the Bonds or in 
the observance or performance of any of its covenants, agreements or 
conditions. Any such notice shall in no way limit any discretion given to the 
Trustee to determine whether or not it shall take any action with respect to 
any default.

          (2)  The obligation of the Trustee to commence or continue any 
action or proceeding for the purpose of enforcing its or the Bondholders' 
rights shall be conditional upon the Bondholders providing, when required by 
notice in writing from the Trustee, (i) sufficient funds to commence or 
continue the action or proceeding, and (ii) an indemnity satisfactory to the 
Trustee to protect and hold harmless the Trustee against the cost, charges, 
expenses and liabilities to be incurred and any loss and damage it may suffer.

          (3)  None of the provisions contained in this Indenture shall 
require the Trustee to spend or risk its own funds or otherwise incur 
financial liability in the performance of any of its duties or in the 
exercise of any of its rights or powers unless indemnified and funded 
pursuant to Section 11.1(2).

          (4)  The Trustee may, before commencing or at any time during the 
continuance of any such action or proceeding, require the Bondholders at 
whose instance it is acting to deposit with the Trustee the Bonds held by 
them provided the Trustee issues receipts to the relevant Bondholders.

          SECTION 11.2.  EVIDENCE.  (1) Whenever it is provided in this 
Indenture, with reference to any application to the Trustee for the 
certification and delivery of Bonds or other action, that the Corporation 
deposit with the Trustee resolutions, certificates, opinions, requests, 
orders or other documents, it is intended that the truth, accuracy and good 
faith at the time of the granting of such application (or on the effective 
date of any such certificate or report, as the case may be) of the facts and 
opinions stated in all documents so deposited shall, in each and every such 
case, be conditions precedent to the right of the Corporation to have such 
application granted.  The Trustee may rely and shall be protected in acting 
upon documents deposited with it in purported compliance with any such 
provision or for any other purpose, but may in its discretion require further 
evidence before acting or relying on them.

          (2)  The Trustee may rely and shall be protected in acting upon any 
Certified Resolution, Certificate of the Corporation, Order of the 
Corporation, Request of the Corporation or any other resolution, certificate, 
order, request, statement, instrument, 

<PAGE>

                                      -39-


opinion, report, notice, consent, letter, telecopy or other paper or document 
believed by it to be genuine and to have been signed, sent or presented by or 
on behalf of the proper party or parties.

          SECTION 11.3.  EXPERTS AND ADVISERS.  (1) The Trustee may employ or 
retain such Counsel, accountants, appraisers or other experts or advisers as 
it may reasonably require for the purpose of discharging its duties and shall 
not be responsible for any misconduct on the part of any of them.

          (2)  The Trustee may act and shall be protected in acting in good 
faith on the advice of, or information obtained from, any Counsel, 
accountant, appraiser or other expert or adviser, whether retained or 
employed by the Corporation or by the Trustee, in relation to any moneys held 
by the Trustee, which under the trusts of this Indenture may be placed in the 
deposit vaults of the Trustee or of any Canadian chartered bank or deposited 
for safekeeping with any such bank.  Unless otherwise expressly provided, any 
moneys so held, pending its application or withdrawal under any provisions of 
this Indenture, may be deposited in the name of the Trustee in any Canadian 
chartered bank, at the rate of interest (if any) then current on similar 
deposits or, with the consent of the Corporation, may be (i) deposited in the 
deposit department of the Trustee or any other loan or trust company 
authorized to accept deposits under the laws of Canada or a province thereof, 
or (ii) invested in securities issued or guaranteed by the Government of 
Canada or any province thereof or any Canadian chartered bank or loan or 
trust company, maturing not more than one year from the date of investment.  
Unless an Event of Default shall have occurred and be continuing, all 
interest or other income received by the Trustee in respect of the deposits 
and investments shall belong to the Corporation.

          SECTION 11.4.  ACTION BY TRUSTEE TO PROTECT INTERESTS.  The Trustee 
shall have power to institute and to maintain such actions and proceedings as 
it may consider necessary or expedient to preserve, protect or enforce its 
interests and the interests of the Bondholders.

          SECTION 11.5.  TRUSTEE NOT REQUIRED TO GIVE SECURITY.  The Trustee 
shall not be required to give any bond or security in respect of the 
execution of the trusts and powers of this Indenture or otherwise.

          SECTION 11.6.  PROTECTION OF TRUSTEE.  By way of supplement to the 
provisions of any law for the time being relating to trustees:
     
(a)       the Trustee shall not be liable for or by reason of any statements 
of fact or recitals in this Indenture or in the Bonds (except the 
representation contained in Section 11.10 and in the certificate of the 
Trustee on the Bonds) or required to verify the same, but all such statements 
or recitals are and shall be deemed to be made by the Corporation;

(b)       the Trustee shall have no obligation to see to or to require 
evidence of the registration or filing (or renewal) of this Indenture or any 
supplemental or ancillary instrument;

<PAGE>

                                      -40-


(c)       the Trustee shall not be bound to notify any Person of the 
execution of this Indenture; and

(d)       the Trustee shall have no liability or responsibility whatsoever or 
be in any way responsible for the consequence of any breach on the part of 
the Corporation of any of the covenants or of any other acts of the agents or 
servants of the Corporation.

          SECTION 11.7.  REPLACEMENT OF TRUSTEE.  The Trustee may resign its 
trust and be discharged from all further duties and liabilities under this 
Indenture by giving the Corporation not less than 90 days' notice in writing 
or such shorter notice as may be acceptable to the Corporation.  The 
Bondholders, by Extraordinary Resolution, may at any time remove the Trustee 
and appoint a new Trustee.  In the event of the Trustee resigning or being 
removed or being dissolved, becoming bankrupt, going into liquidation or 
otherwise becoming incapable of acting, the Corporation shall immediately 
appoint a new Trustee unless a new Trustee has already been appointed by the 
Bondholders by Extraordinary Resolution; failing such appointment by the 
Corporation, the retiring Trustee or any Bondholder may apply to a Judge of 
the Ontario Court of Justice (General Division), for the appointment of a new 
Trustee.  Any new Trustee appointed by the Corporation or by the Court shall 
be subject to removal as aforesaid by the Bondholders.  Any new Trustee shall 
be a corporation authorized to carry on the business of a trust company in 
the Province of Ontario.  On any new appointment, the new Trustee shall be 
vested with the same powers, rights, duties and responsibilities as if it had 
been originally named as Trustee without any further assurance, conveyance, 
act or deed, but there shall be immediately executed, at the expense of the 
Corporation, all such conveyances or other instruments as, in the opinion of 
Counsel, may be necessary or advisable for the purpose of assuring the same 
to the new Trustee.  At the request of the Corporation or the new Trustee, 
the retiring Trustee, upon payment of the amounts, if any, due to it pursuant 
to Section 5.2, shall assign, transfer and deliver to the new Trustee all 
property and money held and all records kept by the retiring Trustee in 
connection with this Indenture.

          SECTION 11.8.  CONFLICT OF INTEREST.  (1) The Trustee represents to 
the Corporation that, at this date, no material conflict of interest exists 
in the Trustee's role as a fiduciary under this Indenture and agrees that in 
the event of a material conflict of interest arising it will, within 90 days 
after ascertaining that it has such material conflict of interest, either 
eliminate the conflict or resign these trusts.

          (2)  Subject to Section 11.8(1), the Trustee, in its personal or 
any other capacity, may buy, lend upon and deal in securities of the 
Corporation or any of its Affiliates and generally may contract and enter 
into financial transactions with the Corporation or any of its Affiliates 
without being liable to account for any profit.

          (3)  The Bondholders acknowledge that the Trustee is a wholly-owned 
subsidiary of The Bank of Nova Scotia and agree that such fact is not, in and 
of itself, a conflict of interest.

          SECTION 11.9.  CASH COLLATERAL HELD BY THE TRUSTEE.  The Trustee, 
the Corporation and by its acceptance of a Bond hereunder, each Bondholder 
acknowledge that (i) the Trustee is holding in safekeeping cash or cash 
equivalents equal to 

<PAGE>

                                      -41-


Cdn. $12,000,000 (the "Cash Collateral") on behalf of Her Majesty the Queen 
in Right of the Province of British Columbia (the "Province"), as represented 
by the Minister of Finance and Corporate Relations, as security for certain 
obligations of the Corporation under Permit M-206, issued to the Corporation 
under the MINES ACT (British Columbia) in connection with the Kemess Mine; 
(ii) the Trustee, both in its personal capacity and its capacity as the 
holder of the Cash Collateral on behalf of the Province, does not have any 
lien, charge, or right of set-off against the Cash Collateral or the proceeds 
thereof from the sale or redemption of the Cash Collateral (the foregoing 
does not however apply to or limit any existing lien, charge or right of 
set-off held by the province against the Cash Collateral or the proceeds 
thereof); (iii) any residual right, title or interest of the Corporation in 
the Cash Collateral is subject to the Senior Security, the Security, the 
Subordinated Security and any other security interests granted by the 
Corporation therein from time to time; (iv) the priority of any of the 
aforesaid security will be determined in accordance with inter-creditor 
agreements entered into between the holders of such security from time to 
time and applicable law; (v) the Trustee, the Corporation and each Bondholder 
hereby acknowledge that the Trustee will  not be in conflict or breach of its 
duties  and obligations hereunder by virtue of holding the Cash Collateral on 
behalf of the Province; and (vi) the Trustee may, upon receipt of a valid 
direction or instruction from the Province, deliver the Cash Collateral to 
the Province free and clear of any Lien created by the Security.

          SECTION 11.10.  CERTIFICATE OF COMPLIANCE.  At least once in each 
twelve-month period beginning on the date of this Indenture and at any other 
time upon the demand of the Trustee, the Corporation shall furnish the 
Trustee with a certificate that the Corporation has complied with all 
requirements contained in the Indenture that, if not complied with, would, 
with the giving of notice, lapse of time or otherwise, constitute an Event of 
Default, or, if there has been failure to comply, giving particulars of such 
failure.

          SECTION 11.11.  LEGISLATION RELATING TO INDENTURES.  The provisions 
of this Indenture are subject to the BUSINESS CORPORATIONS ACT (Ontario) and 
any other legislation applicable from time to time relating to trust 
indentures and to the rights, duties and obligations of trustees under trust 
indentures and of corporations issuing debt obligations under trust 
indentures.  In the event of any conflict between the provisions of this 
Indenture and the provisions of the BUSINESS CORPORATIONS ACT (Ontario) or 
any other such legislation, such legislation shall govern.

          SECTION 11.12.  ACCEPTANCE OF TRUST.  Montreal Trust Company of 
Canada accepts the trusts of this Indenture declared and provided for and 
agrees to perform the same upon the terms and conditions herein set forth.

<PAGE>

                                      -42-

                                   ARTICLE 12
                                 MISCELLANEOUS
  
          SECTION 12.1  COMMUNICATIONS.  Any notice, direction or other 
communication required or permitted to be given under this Indenture shall, 
except as otherwise permitted, be in writing and given by delivering it or 
sending it by telecopy or other similar form of recorded communication 
addressed, if to the Corporation, to it at:  5501 Lakeview Drive, Kirkland, 
Washington 98033, Attention:  President, Telephone:  (425) 822-8992, 
Telecopier: (425) 822-3349, if to the Trustee, to it at: 4th Floor, 510 
Burrard Street, Vancouver, British Columbia  V6C 3B9, Telephone:  (604) 
661-9591, Telecopier: (604) 685-4079, and, if to the Bondholders, at the 
addresses shown in the records of the Trustee.  Any communication shall be 
deemed to have been validly and effectively given (i) if personally 
delivered, on the date of such delivery if such date is a Business Day and 
such delivery was made prior to 4:00 p.m. (Toronto time), otherwise on the 
next Business Day, (ii) if transmitted by facsimile or similar means of 
recorded communication on the Business Day following the date of transmission.

          SECTION 12.2.  ADDRESS OF RECORD.  The Corporation and each 
Bondholder shall notify the Trustee of their respective telecopy number and 
mailing address and the Trustee shall furnish the same information with 
respect to itself to the Corporation and each of the Bondholders at the date 
of issue of the Bonds.  From time to time, the Corporation and any Bondholder 
may notify the Trustee and the Trustee may notify the Corporation and each 
Bondholder of a change in its telecopy number or mailing address, as the case 
may be, in the manner set forth in subsection 12.1.  Such number or address, 
until changed by a similar notice, shall be the address of record of such 
party for all purposes of this Indenture.

          SECTION 12.3.  INDEMNIFICATION OF TRUSTEE.  (1) The Corporation 
will at all times keep the Trustee indemnified and save the Trustee harmless 
from and against all claims, demands, losses, actions, causes of action, 
costs, charges, expenses, damages and liabilities whatsoever arising in 
connection with this Indenture including, without limitation, those arising 
out of or related to actions taken or omitted to be taken by the Trustee 
contemplated hereby, legal fees and disbursements of counsel engaged by the 
Trustee on a solicitor and client basis and costs and expenses incurred in 
connection with the enforcement of this indemnity (unless such enforcement is 
unsuccessful), which the Trustee may suffer or incur, whether at law or in 
equity, in any way caused by or arising, directly or indirectly, in respect 
of any act, deed, matter or thing whatsoever made, done, acquiesced in or 
omitted in or about or in relation to the execution of its duties as trustee 
and including any deed, matter or thing in relation to the registration, 
perfection, release or discharge of security. The foregoing provisions of 
this Section 12.3(1) do not apply to the extent that the Trustee or its 
employees have acted fraudulently or negligently.

          (2)  The Corporation hereby agrees to indemnify the Trustee, its 
directors, officers, employees, and agents, and all of their successors and 
assigns (collectively the "Indemnified Parties") against any loss, expenses, 
claim, liability or asserted liability (including strict liability and 
including costs and expenses of abatement and remediation of spills or 
releases of contaminants and including liabilities of the Indemnified Parties 
to third parties (including governmental agencies) in respect of bodily 

<PAGE>

                                      -43-


injuries, property damage, damage to or impairment of the environment or any 
other injury or damage and including liabilities of the Indemnified Parties 
to third parties for the third parties' foreseeable and unforeseeable 
consequential damages) incurred as a result of:

(a)       the administration of the trust created hereby; or

(b)       the exercise by the Trustee of any rights hereunder or under the 
Security; which result from or relate, directly or indirectly, to:

          (i)    the presence or release of any contaminants, by any means or
                 for any reason, on the property subject to the Security,
                 whether or not release or presence of the contaminants was
                 under the control, care or management of the Corporation or of
                 a previous owner, or of a tenant;

          (ii)   any contaminant present on or released from any contiguous
                 property to the property subject to the Security; or

          (iii)  the breach or alleged breach of any environmental laws by  the
                 Corporation.

          For purposes of this Section 12.3(2), "liability" shall include (i) 
liability of an Indemnified Party for costs and expenses of abatement and 
remediation of spills and releases of contaminants, (ii) liability of an 
Indemnified Party to a third party to reimburse the third party for bodily 
injuries, property damages and other injuries or damages which the third 
party suffers, including (to the extent, if any, that the Indemnified Party 
is liable therefor) foreseeable and unforeseeable consequential damages 
suffered by the third party and (iii) liability of the Indemnified Party for 
damage to or impairment of the environment.

          SECTION 12.4.  DEPOSIT OF SECURITIES.  The Trustee shall not be 
responsible or liable in any manner whatsoever for the sufficiency, 
correctness, genuineness or validity of any security deposited with it.

          SECTION 12.5.  CHANGE OF NAME.  The Corporation shall not change 
its name or amalgamate with another corporation under a different name 
without giving at least 10 day's prior notice to the Trustee of the new name 
and the date upon which such change of name or amalgamation is to take effect 
and, within five Business Days of the change of name or amalgamation, the 
Corporation shall proved the Trustee with:

(a)       a notarial or certified copy of the articles of amendment or 
articles of amalgamation effecting the change of name; and

(b)       an opinion from legal counsel satisfactory to the Trustee as to the 
correct name of the Corporation and confirming that all appropriate 
registrations, filings or recordings have been made on behalf of the Trustee 
to fully and effectively maintain the perfection and priority of the Security 
created hereby.

<PAGE>

                                      -44-


<PAGE>

                                      -45-

                                   ARTICLE 13
                                 FORM OF BONDS

          SECTION 13.1.  FORM OF BONDS.  The form of the Bonds and the 
related certificate of the Trustee, registration panel and panel for the 
notation of payments on account of principal shall be substantially as 
follows:

No. ........  U.S. $................

                              ROYAL OAK MINES INC.

            (incorporated under the laws of the Province of Ontario)

                                15% DEMAND BONDS

          Royal Oak Mines Inc. (the "CORPORATION"), for value received, 
acknowledges itself indebted and promises to pay to the registered holder on 
demand, or on such earlier date as the principal amount may become due in 
accordance with the Indenture hereinafter mentioned, the sum of - UNITED 
STATES DOLLARS (U.S. $-) and to pay interest on principal sum from this date 
in like money calculated and compounded monthly in arrears and payable on the 
last Business Day of January of 1999 and thereafter on the last Business Day 
of each month in each year at the rate of FIFTEEN (15%) PER CENT PER ANNUM, 
with interest on amounts overdue payable on demand at the same rate and in 
like currency.

          This Bond is one of the U.S. $50 Million 15% Demand Bond of the 
Corporation issued under an Indenture made June 22, 1998 between the 
Corporation and Montreal Trust Company of Canada, as Trustee (which, 
together, with all supplementary instruments is referred to as the 
"INDENTURE").  Terms used in this Bond which are defined in the Indenture 
have the meanings specified in the Indenture.  The Bonds issuable under the 
Indenture are limited to an aggregate principal amount of U.S. $50 million 
outstanding at any time.

          The principal amount of this Bond shall be payable at the principal 
office of Montreal Trust Company of Canada, as Trustee under the Indenture, 
in Vancouver, British Columbia.  Interest on the Bonds and on overdue 
interest shall be paid directly by the Corporation to the registered holder.

<PAGE>

                                      -46-


          Subject to the terms of the Indenture, This Bond and all other 
Bonds now or hereafter certified and issued under the Indenture rank PARI 
PASSU and are secured equally and rateably by the Indenture.  This Bond shall 
not become obligatory for any purpose until certified by or on behalf of the 
Trustee.

          IN WITNESS WHEREOF the Corporation has caused this Bond to be 
executed by its duly authorized officers.

                                        ROYAL OAK MINES INC.


                                        Per:  
                                            ---------------------------
                                            Authorized Signing Officer

                                                                             c/s
                                        Per:
                                            ---------------------------
                                            Authorized Signing Officer



                        (FORM OF TRUSTEE'S CERTIFICATE)

     This is one of the U.S. $50 Million 15% Demand Bonds referred to in the 
Indenture within mentioned.

                                        MONTREAL TRUST COMPANY OF
                                        CANADA



                                        Per:
                                            ---------------------------
                                            Authorized Signing Officer


                          (FORM OF REGISTRATION PANEL)

                    (No writing here except by the Trustee)

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
       DATE OF                  NAME AND ADDRESS OF            AUTHORIZED
       REGISTRATION             REGISTERED BONDHOLDER          SIGNATURES
- --------------------------------------------------------------------------------
<S>                             <C>                            <C>
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
</TABLE>

<PAGE>

                                      -47-



                  (FORM OF PANEL FOR NOTATION OF PAYMENTS ON
               ACCOUNT OF PRINCIPAL OR REDUCTIONS OF PRINCIPAL)

                       Payments on Account of Principal

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
    AUTHORIZED        AMOUNT PAID      BALANCE OF PRINCIPAL       SIGNATURE
    DATE              OR REDUCED       AMOUNT UNPAID
- --------------------------------------------------------------------------------
<S>                   <C>              <C>                        <C>
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
</TABLE>


<PAGE>

                                        -48-

                                      ARTICLE 14
                                      EXECUTION

          SECTION 14.1.  NOTARIAL TRUST DEED.  The Corporation, in conformity
with the laws of the Province of Quebec in which part of the Collateral may at
any time be situate, will execute, in notarial form, a Trust Deed of Hypothec,
Mortgage and Pledge hypothecating, mortgaging, pledging, charging, ceding and
transferring all its undertaking, property and assets situate in the Province of
Quebec as security for the Bonds, such Trust Deed being substantially of the
same tenor and to the same effect as this Indenture, such Trust Deed and this
Indenture constituting and to be read as one and the same instrument.

          SECTION 14.2.  COUNTERPARTS.  This Indenture may be executed in any
number of counterparts and all such counterparts together shall be deemed to
constitute one and the same instrument.

          SECTION 14.3.  FORMAL DATE.  This Indenture may be referred to as
bearing formal date of June 22, 1998 notwithstanding its actual date of
execution.

          IN WITNESS WHEREOF the parties have caused this Indenture to be
executed by their respective duly authorized officers.


                                        ROYAL OAK MINES INC.


                                        Per:  /s/ James H. Wood
                                            -----------------------------
                                            Authorized Signing Officer

                                                                             c/s

                                        Per:
                                            -----------------------------
                                            Authorized Signing Officer


                                        MONTREAL TRUST COMPANY OF
                                        CANADA


                                        Per:  /s/ Robert McKenzie
                                            -----------------------------
                                            Robert McKenzie
                                            Corporate Trust Officer

                                        Per:  /s/ Sean Pigott
                                            -----------------------------
                                            Sean Pigott
                                            Senior Trust Officer
                                            Corporate Trust Services
<PAGE>


                                 ROYAL OAK MINES INC.


                                  NOTICE OF ADDRESS


TO:       MONTREAL TRUST COMPANY OF CANADA, as Trustee

- -------------------------------------------------------------------------------


          The undersigned, Royal Oak Mines Inc. (the "CORPORATION") gives notice
to Montreal Trust Company of Canada, pursuant to Section 12.2 of the trust
indenture dated June 22, 1998 (the "INDENTURE") between the Corporation and the
Trustee of its address of record for communications under the Indenture as
follows:

          5501 Lakeview Drive
          Kirkland, Washington
          98033

          Attention:   President
          Telecopier:  (425) 822-3349


          DATED at Toronto this 22nd day of June, 1998.


                                        ROYAL OAK MINES INC.


                                        Per: /s/ James H. Wood
                                             ----------------------------
                                             Authorized Signing Officer


                                        Per:
                                             ----------------------------
                                             Authorized Signing Officer



<PAGE>



                                 ROYAL OAK MINES INC.


                               ORDER OF THE CORPORATION


TO:       MONTREAL TRUST COMPANY OF CANADA, as Trustee


- --------------------------------------------------------------------------------


          Royal Oak Mines Inc. (the "CORPORATION"), pursuant to the provisions
of Section 2.2 of the trust indenture dated June 22, 1998 between the
Corporation and you, as trustee, orders you to certify and issue a 15% Demand
Bond in the principal amount of U.S. $15,000,000, to Macquarie Bank Limited of
Level 26, 20 Bond Street, Sydney, N.S.W. Australia and to deliver the same on
this date to the representative of Macquarie Bank Limited at the offices of
Stikeman, Elliott, Suite 5300, Commerce Court West, Toronto, Ontario, without
receiving any consideration for such certification, issuance and delivery.

          DATED at Toronto this 22nd day of June, 1998.


                                        ROYAL OAK MINES INC. 


                                        Per: /s/ James H. Wood
                                             ----------------------------
                                             Authorized Signing Officer


                                        Per:
                                             ----------------------------
                                             Authorized Signing Officer



<PAGE>



                                 ROYAL OAK MINES INC.


                               ORDER OF THE CORPORATION


TO:       MONTREAL TRUST COMPANY OF CANADA, as Trustee


- --------------------------------------------------------------------------------


          Royal Oak Mines Inc. (the "CORPORATION"), pursuant to the provisions
of Section 2.2 of the trust indenture dated June 22, 1998 between the
Corporation and you, as trustee, orders you to certify and issue a 15% Demand
Bond in the principal amount of U.S. $21,000,000, to Bankers Trust Company of
130 Liberty Street, New York, New York 10006 and to deliver the same on this
date to the representative of Bankers Trust Company at the offices of Stikeman,
Elliott, Suite 5300, Commerce Court West, Toronto, Ontario, without receiving
any consideration for such certification, issuance and delivery.

          DATED at Toronto this 22nd day of June, 1998.


                                        ROYAL OAK MINES INC. 


                                        Per: /s/ James H. Wood
                                             ----------------------------
                                             Authorized Signing Officer


                                        Per:
                                             ----------------------------
                                             Authorized Signing Officer


<PAGE>


                                 ROYAL OAK MINES INC.


                               ORDER OF THE CORPORATION


TO:       MONTREAL TRUST COMPANY OF CANADA, as Trustee


- --------------------------------------------------------------------------------


          Royal Oak Mines Inc. (the "CORPORATION"), pursuant to the provisions
of Section 2.2 of the trust indenture dated June 22, 1998 between the
Corporation and you, as trustee, orders you to certify and issue a 15% Demand
Bond in the principal amount of U.S. $5,000,000, to The Bank of Nova Scotia of
One Financial Place, 1 Adelaide Street East, 9th Floor, Toronto, Ontario and to
deliver the same on this date to the representative of The Bank of Nova Scotia
at the offices of Stikeman, Elliott, Suite 5300, Commerce Court West, Toronto,
Ontario, without receiving any consideration for such certification, issuance
and delivery.

          DATED at Toronto this 22nd day of June, 1998.


                                        ROYAL OAK MINES INC. 


                                        Per: James H. Wood
                                             ----------------------------
                                             Authorized Signing Officer


                                        Per:
                                             ----------------------------
                                             Authorized Signing Officer



<PAGE>



                                 ROYAL OAK MINES INC.


                              CERTIFICATE OF COMPLIANCE


TO:       MONTREAL TRUST COMPANY OF CANADA, as Trustee


- --------------------------------------------------------------------------------


          Pursuant to the provisions of Article 1 and Section 2.2 of the
Indenture (as hereinafter defined) the undersigned, James H. Wood, duly
appointed Chief Financial Officer of Royal Oak Mines Inc. (the "CORPORATION"),
certifies for and on behalf of the Corporation and not in my personal capacity,
intending that the same may be relied upon by you without further enquiry, that:
     
(a)       I have read and understand the provisions of the trust indenture dated
June 22, 1998 (the "INDENTURE") between the Corporation and Montreal Trust
Company of Canada (the "TRUSTEE"), as trustee, relating to the issue,
certification and delivery of 15% Demand Bonds (the "BONDS") (defined terms used
herein have the respective meanings ascribed thereto in the Indenture);

(b)       I have examined the order of the Corporation dated June 22, 1998 (the
"ORDER") ordering the Trustee to issue, certify, and deliver Bonds to Bankers
Trust Company, Macquarie Bank Limited and The Bank of Nova Scotia in accordance
with Section 2.2 of the Indenture;

(c)       to the best of my knowledge, after such examination and investigation
as I have deemed necessary with regard to such actions, no further or other
actions are required to be taken by the Corporation or by any other person in
order to enable the Trustee to act in accordance with the Order;

(d)       each of Bankers Trust Company, Macquarie Bank Limited and The Bank of
Nova Scotia is a Hedging Counterparty within the meaning of the Indenture; and

(e)       the Bonds are to be pledged to Bankers Trust Company, Macquarie Bank
Limited and The Bank of Nova Scotia, respectively, to be held as security for
the obligations of the Corporation or an affiliate pursuant to Eligible Hedging
Indebtedness.

          DATED at Toronto this 22nd day of June, 1998.



                                        /s/ James H. Wood
                                        ----------------------------
                                        James H. Wood




<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE 
CONSOLIDATED BALANCE SHEETS AND CONSOLIDATED STATEMENTS OF INCOME FOUND IN 
THE COMPANY'S FORM 10-Q FOR THE YEAR-TO-DATE AND IS QUALIFIED IN ITS ENTIRETY
BY REFERENCE TO SUCH FINANCIAL STATEMENT.  
</LEGEND>
<MULTIPLIER> 1,000
<CURRENCY> CANADIAN
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               JUN-30-1998
<EXCHANGE-RATE>                                 0.6953
<CASH>                                          16,423
<SECURITIES>                                       560
<RECEIVABLES>                                    8,891
<ALLOWANCES>                                         0
<INVENTORY>                                     15,447
<CURRENT-ASSETS>                                46,254
<PP&E>                                         886,083
<DEPRECIATION>                                  98,343
<TOTAL-ASSETS>                                 903,876
<CURRENT-LIABILITIES>                           94,800
<BONDS>                                        426,764
                                0
                                          0
<COMMON>                                       397,375
<OTHER-SE>                                    (95,404)
<TOTAL-LIABILITY-AND-EQUITY>                   903,876
<SALES>                                         45,050
<TOTAL-REVENUES>                                45,050
<CGS>                                           35,247
<TOTAL-COSTS>                                   50,963
<OTHER-EXPENSES>                                 3,496
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               1,066
<INCOME-PRETAX>                               (32,057)
<INCOME-TAX>                                       841
<INCOME-CONTINUING>                           (32,742)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                  (32,742)
<EPS-PRIMARY>                                   (0.24)<F1>
<EPS-DILUTED>                                   (0.24)<F1>
<FN>
<F1>Using US GAAP and SFAS 128, Basic and Diluted EPS are both $(0.35).
</FN>
        

</TABLE>


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