MAGMA COPPER CO
424B5, 1995-05-15
PRIMARY SMELTING & REFINING OF NONFERROUS METALS
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                                                Filed Pursuant to Rule 424(b)(5)
                                                Registration No. 33-53021

      INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT.

                    SUBJECT TO COMPLETION, DATED MAY 15, 1995
             PROSPECTUS SUPPLEMENT TO PROSPECTUS DATED APRIL 7, 1994

                                  $200,000,000

                              MAGMA COPPER COMPANY
               ___% SENIOR SUBORDINATED NOTES DUE MAY 15, 2005
             
                              --------------------
 
   Interest on the % Senior Subordinated Notes due May 15, 2005 (the "Notes") is
payable  semi-annually  on  May 15  and  November  15 of each  year,  commencing
November  15,  1995.  The Notes will mature on May 15,  2005.  The Notes will be
general  unsecured  obligations of the Company and will be subordinated in right
of payment to Senior  Indebtedness,  pari passu with other  Senior  Subordinated
Debt  Securities,  including  the Company's  12% Senior  Subordinated  Notes due
December 15, 2001 and 11 1/2 % Senior  Subordinated  Notes due January 15, 2002,
and senior to all other  Subordinated Debt Securities of the Company.  The Notes
will not be subject to redemption by the Company.  The Notes will be represented
by a Global Security or Securities that will be deposited with, or on behalf of,
The  Depository  Trust  Company  ("DTC"),  and will be available for purchase in
denominations of $1,000 or any integral  multiple  thereof.  See "Description of
Certain Terms of the Notes."

     FOR  A  DISCUSSION  OF  CERTAIN   FACTORS  THAT  SHOULD  BE  CONSIDERED  BY
PROSPECTIVE  INVESTORS,  SEE  "INVESTMENT  CONSIDERATIONS"  IN THE  ACCOMPANYING
PROSPECTUS.
                              --------------------

  THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
       EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
           SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES
             COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY OF THIS
            PROSPECTUS SUPPLEMENT OR THE ACCOMPANYING PROSPECTUS. ANY
              REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

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

                INITIAL PUBLIC      UNDERWRITING     PROCEEDS TO
               OFFERING PRICE(1)    DISCOUNT(2)     COMPANY(1)(3)
             ------------------- ---------------- ---------------

Per Note ....             %                   %                %
Total(3) ....   $                   $                $     

- --------
(1) Plus accrued interest, if any, from May   , 1995.
(2) The Company has agreed to indemnify the Underwriters against certain
    liabilities, including liabilities under the Securities Act of 1933.
(3) Before deducting expenses estimated at $      , payable by the Company.

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

   The Notes are offered  severally by the  Underwriters,  as specified  herein,
subject to receipt and  acceptance  by them and subject to their right to reject
any order in whole or in part.  It is expected  that the Notes will be ready for
delivery in book-entry  form only through the facilities of DTC in New York, New
York on or about May , 1995 against  payment  therefor in immediately  available
funds.

    GOLDMAN, SACHS & CO.                                MERRILL LYNCH & CO.

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

           The date of this Prospectus Supplement is May , 1995.

 
<PAGE>

   IN CONNECTION WITH THIS OFFERING,  THE  UNDERWRITERS MAY OVER-ALLOT OR EFFECT
TRANSACTIONS  WHICH  STABILIZE OR MAINTAIN THE MARKET PRICE OF THE NOTES OFFERED
HEREBY AT A LEVEL ABOVE THAT WHICH MIGHT  OTHERWISE  PREVAIL IN THE OPEN MARKET.
SUCH  STABILIZING MAY BE EFFECTED IN THE  OVER-THE-COUNTER  MARKET OR OTHERWISE.
SUCH STABILIZING, IF COMMENCED, MAY BE DISCONTINUED AT ANY TIME.







































                                       S-2



<PAGE>
                              PROSPECTUS SUMMARY

     The  following  summary is qualified  in its entirety by the more  detailed
information and the consolidated  financial  statements and notes thereto of the
Company appearing elsewhere in or incorporated by reference into this Prospectus
Supplement or the accompanying Prospectus.

                                 THE COMPANY

     Magma  Copper  Company  ("Magma" or the  "Company")  is a fully  integrated
producer  of  electrolytic  copper  and ranks  among  the  largest  U.S.  copper
producers.  Magma's  principal  products  are  high-quality  copper  cathode and
high-quality  copper  rod,  the  latter of which is the basic  feedstock  of the
copper wire and cable industry.

     The Company  owns and operates  underground  copper mines at its San Manuel
and  Superior  Mining  Divisions,  an open-pit  copper mine at its Pinto  Valley
Mining  Division,  and in situ  leaching  operations at its San Manuel and Pinto
Valley  Mining  Divisions,  all of which are  located in  southeastern  Arizona.
Recently,  the Company began  development of its Robinson mine located near Ely,
Nevada.  Production at this mine is expected to commence in the first quarter of
1996. In the fourth quarter of 1994, the Company  completed the acquisition of a
company  which  owns  one  of the  largest  operating  mines  in  Southern  Peru
("Tintaya").  Tintaya  operates an open-pit  mine and is engaged in a variety of
development projects at this property.

     The  Company  operates  the largest and most  modern  copper  smelting  and
refining complex in the United States. The Company's smelter, which was recently
expanded,  has a rated production capacity of 720 million pounds of copper anode
per year,  representing  approximately 25% of U.S. copper smelting capacity.  In
addition to smelting  and refining its own copper  concentrate  production,  the
Company  smelts and refines a  substantial  amount of copper  concentrates  on a
custom  basis for, or  purchased  from,  third  parties,  the profits from which
effectively  reduce the Company's  overall  break-even cost of producing  copper
from its mines.

                                 THE OFFERING


Securities Offered .......$200,000,000 aggregate principal amount of    % Senior
                          Subordinated Notes due May 15, 2005.

Maturity Date ............May 15, 2005.

Interest Payment Dates ...May 15 and November 15 of each year, commencing 
                          November 15, 1995.

Ranking ..................Junior to Senior Indebtedness,  pari passu with Senior
                          Subordinated    Debt    Securities   and   senior   to
                          Subordinated Debt Securities.

Certain Covenants ........The  Indenture  governing  the Notes will restrict the
                          ability of the Company to incur  secured  Debt that is
                          pari  passu or junior  to the Notes and to incur  debt
                          that is junior to Senior Debt Securities and senior to
                          the Notes. The Indenture also contains a limitation on
                          the use of proceeds from certain asset dispositions.

Use of Proceeds ..........The  net  proceeds  of this  offering  will be used to
                          repay  short-term  debt, to  repurchase  the Company's
                          publicly  traded common stock purchase  warrants,  and
                          for general corporate purposes,  which may include the
                          repurchase   or   redemption  of  higher  cost  Senior
                          Subordinated Notes currently outstanding.

                                       S-3


<PAGE>
                             RECENT DEVELOPMENTS

RESULTS OF OPERATIONS

     Since 1988, when the Company became fully independent, it has substantially
improved its operating performance.  The Company has increased copper production
from its own sources by approximately 48% from 402 million pounds in 1988 to 595
million pounds in 1994.  Production from the leaching and solvent extraction and
electrowinning  ("SX-EW")  operations increased by 87% from 86 million pounds in
1988 to 161 million pounds in 1994. The Company's total production has increased
by  approximately  78% from 500 million  pounds of copper in 1988 to 889 million
pounds in 1994.  Net cash  operating  costs of copper sold have  decreased  from
$0.78 per pound  ($0.96  adjusted for  inflation)  in 1988 to $0.58 per pound in
1994. Net cash operating  costs per pound represent (a) operating costs of Magma
source copper sold (excluding depreciation, depletion, and amortization) reduced
by credits for  by-products  and profits from custom  processing  divided by (b)
total  pounds sold from Magma  sources.  The Company  attributes  its  increased
production  and  productivity  and  reduction  in operating  costs  primarily to
improved labor relations, which culminated in the execution in 1991 of a 15-year
collective  bargaining  agreement,  as well as the use of  innovative  operating
technology,   including  an  increase  in  production   from  lower  cost  SX-EW
technology.

     For the quarter  ended March 31, 1995,  the  Company's net income was $51.8
million,  as compared to $7.6  million  for the  quarter  ended March 31,  1994.
Earnings  before  net  interest  expense,  taxes,  depreciation,  depletion  and
amortization  ("EBITDA")  were $89.7  million for the first  quarter of 1995, as
compared to $27.9 million for the first quarter of 1994. The improvements in net
income and EBITDA were  primarily  attributable  to an increase in the Company's
average  realized price of copper,  which increased by $0.48 from $0.84 to $1.32
per pound, and to increased sales volume.  The Company's  average realized price
of copper includes hedging activities.  The Company's average net operating cost
of $0.56 per pound for the quarter benefited from a sharp, temporary increase in
the price of molybdenum,  a by-product of the copper concentrating  process that
serves as a credit to the Company's cash operating costs.

     Net income for 1994 was $87.4  million,  compared to $21.9 million in 1993.
EBITDA was $199.2  million in 1994, as compared to $125.3  million in 1993.  The
increases in earnings and EBITDA were  attributable  to  reductions  in net cash
operating costs, an increase in sales volume, and an increase in Magma's average
realized price per pound of copper sold.  Net cash  operating  costs declined by
$0.08  per pound of copper  in 1994,  from an  average  cost of $0.66 in 1993 to
$0.58 in 1994. Sales of Magma source copper  increased by over 7 percent,  or 39
million pounds in 1994, from 558 million pounds in 1993 to 597 million pounds in
1994.  Magma also  benefited  from an increase in the average  realized price of
copper sold,  which  increased by $0.04 per pound from $0.94 in 1993 to $0.98 in
1994.  Earnings  for 1993 were  negatively  impacted by heavy rains and flooding
that occurred during the first quarter of 1993, which reduced after-tax earnings
for 1993 by $15.5 million,  or $0.30 per share, and increased costs by $0.03 per
pound.

DEVELOPMENT PROJECTS

     In recent periods,  the Company has been engaged in a program to expand and
improve its smelting  and refining  complex and to increase its ore reserves and
production from Company reserves. The following sets forth a summary description
of certain of the  Company's  more  significant  projects,  which are more fully
described in the reports incorporated by reference into this Prospectus.

Tintaya

   On November  29, 1994,  Magma  Copper  Company  acquired  Magma  Tintaya S.A.
(formerly known as Empresa Minera Especial Tintaya S.A.),  which owns one of the
largest operating copper mining projects in Southern Peru. At the closing, Magma
purchased 98.43% of Tintaya,  with Tintaya's  employees  subscribing to purchase
the remaining  1.57% interest in accordance  with an agreement with the Peruvian
government.  Magma paid $247  million in cash for its interest in Tintaya and is
required  to make an  additional  $85  million in capital  expenditures  at this
project over the five years ending  November  29, 1999.  The Company  expects to
expend approximately $40 million of this amount during 1995.

                                        S-4

<PAGE>
   Tintaya is a low-cost,  open pit copper mine and concentrator  operation with
proven and probable reserves of 58 million metric tonnes of 1.78% sulfide copper
ore, or approximately  2.0 billion pounds of recoverable  copper. In addition to
its large area of established  ore reserves,  the Company  believes  Tintaya has
excellent  exploration  potential.  Magma has already  identified several highly
prospective  mineralized areas and is conducting a major exploration  program to
prove up additional reserves.  In 1993 and 1994, Tintaya produced  approximately
110 million  pounds of copper in  concentrate  per year at a cost of about $0.60
per pound of refined copper.  Magma plans to increase  production to 140 million
pounds per year, and, over the next two years, decrease net cash operating costs
to an estimated  $0.55 per pound.  Magma is studying the feasibility of an SX-EW
operation  that could produce 70 million  pounds of copper cathode per year from
an oxide  mineralized  resource of 21.7  million  metric  tonnes of 1.57 percent
oxide  copper.  The SX-EW  operation  may reduce net cash  operating  costs from
Tintaya to below $0.50 per pound and could  expand the total  annual  production
rate from  Tintaya  to over 200  million  pounds per year in 1997.  The  Company
anticipates that the construction of an SX-EW facility would cost  approximately
$100 million based upon preliminary estimates.

   Although  the Company made an extensive  evaluation  of Tintaya  prior to its
acquisition,  there are certain risks inherent in the  acquisition and operation
of  foreign  properties,  including  the  risk  of  political  instability,  the
possibility of adverse economic or tax reforms, restrictions on the repatriation
of funds, and currency risks. As part of its investment in Tintaya,  the Company
and the government of Peru entered into a judicial  stability  agreement and the
Company  became a party to an  existing  tax  stability  agreement  between  the
government  and Tintaya.  These  agreements  provide,  among other things,  free
exchange of foreign  currency,  remittance  abroad of profits and  capital,  the
right  to use or sell  any  product  derived  from  Tintaya,  and tax and  legal
stability.  Although these  agreements do not eliminate all risk associated with
its investment in Tintaya,  the Company believes that such agreements minimize a
number  of the  risks  typically  associated  with an  investment  in a  foreign
property.

Robinson

   Construction  of the  Company's  Robinson  mine  began on October  12,  1994,
following  final  approval  of the  project  by the  Bureau of Land  Management.
Production  at the Robinson mine is expected to commence in the first quarter of
1996. The Robinson project is expected to have an initial  construction  cost of
$300 million to purchase  equipment,  construct a concentrator,  and develop ore
reserves. Through March 31, 1995, $93 million of this amount had been spent.

   Currently,  the  Robinson  mine has defined  copper and gold ore  reserves of
approximately  252 million tons of 0.551%  copper  sulfide ore and 0.0102 ounces
per ton of gold,  containing  an  estimated  2.3 billion  pounds of  recoverable
copper  and 1.7  million  ounces of gold.  When the  operation  reaches  planned
production,  the Company  expects  Robinson  to produce  146  million  pounds of
copper,  117,000  ounces of gold and 363,000  ounces of silver  annually  over a
15-year period at a net cash operating cost of less than $0.50 per pound.  Based
upon the results of preliminary  studies, the Company believes that the Robinson
mine has  significant  potential  for further  increases in  production  and ore
reserves.

Other Capital Projects

   During 1994, the Company completed an expansion of its smelter which resulted
in increased  production,  lower costs and improved  environmental  performance.
Smelter production is at levels above the 720 million pounds of copper per annum
(in anode form) originally anticipated.

   In March 1994, the Company began development of the Lower Kalamazoo  orebody.
Development of this orebody is expected to be completed and ready for production
in 1997 at a total capital cost of $165 million.  At March 31, 1995, $66 million
had been expended on this project. Based on the Company's current mine plan, the
Lower Kalamazoo project is scheduled to produce approximately 2.1 billion pounds
of copper during the period from 1997 to 2009, at an average rate of 180 million
pounds of copper per year when the project reaches full production.

                                S-5

<PAGE>
   The decision to complete  ongoing  projects or to  undertake  new projects is
subject to a variety of factors,  which may include  (depending on the project),
the price of copper, the completion of favorable  feasibility  studies,  and the
receipt of necessary  permits.  There can be no assurance  that the projects set
forth herein will be undertaken,  or, if undertaken,  will prove successful.  If
the Company is unable to replace its reserves from the mine development projects
being  evaluated,  or with other reserves  identified or acquired in the future,
the Company's  dependency upon third party sources to supply copper  concentrate
to its smelting and refining operations would increase.

CAPITAL RESOURCES AND LIQUIDITY

   During  the first  quarter  of 1995,  and in 1994,  the  Company  funded  its
development  projects  through  internally   generated  cash  flow,   short-term
borrowings,  and existing cash balances. In this regard, in the first quarter of
1995,   cash  flow   available  for  capital   expenditures   (net  income  plus
depreciation,  depletion,  and  amortization)  was $68.6 million with an average
realized  price of copper sold of $1.32 per pound,  as compared to $22.7 million
with an average  realized  price of copper sold of $0.84 per pound for the first
quarter of 1994. The Company's 1994 cash flow available for capital expenditures
was $162.5  million with an average  realized  price of copper sold of $0.98 per
pound,  as compared to $90.2  million with an average  realized  price of copper
sold of $0.94 per pound in 1993.  Increases  in cash flow were  attributable  to
increased  production,  decreased costs, and higher copper prices. In 1993, cash
flow was  adversely  affected by storm  damage from  Arizona's  abnormally  high
rainfalls that occurred early in the year.

   The Company  anticipates  spending  approximately $610 million for the period
from  April  1,  1995 to  December  31,  1997  to  complete  currently  approved
development projects, including those identified above (exclusive of the Tintaya
SX-EW facility which is the subject of a pending feasibility study). The Company
plans to invest  about $345  million in the last three  quarters  of 1995,  $160
million in 1996,  and $105  million in 1997.  The  Company  made $91  million in
capital expenditures in the first quarter of 1995.

   In order to assure cash flow from  operations to facilitate its  contemplated
spending  program,  the Company  has  purchased a  combination  of put  options,
futures,  swap  contracts,  and  forward  commitments.  For  1995,  the  Company
purchased put option  contracts  covering 529 million  pounds of production at a
London  Metals  Exchange  ("LME")  based  strike  price of $0.85 per  pound.  In
addition,  the Company  purchased put options  covering 121 million  pounds at a
LME-based  strike  price of $0.95 per  pound.  The  Company  also  entered  into
Commodity  Exchange ("Comex") based swap contracts covering 51 million pounds of
production  at an  average  price of $1.03 per  pound.  When  combined  with the
amortization of the option  premiums,  these contracts  create a floor price for
the Company's  production of  approximately  $0.87 per pound for 1995. For 1996,
the Company  purchased put options  covering 676 million  pounds of  production,
creating a minimum  realized price of  approximately  $0.93 per pound. For 1997,
the Company has purchased put options  covering 364 million  pounds of first and
second quarter  production,  creating a minimum  realized price of approximately
$0.93 per pound. The Company believes these programs help to protect against the
volatility of copper prices.


   In 1994, the Company increased its revolving line of credit from $200 million
to $300 million. At March 31, 1995, there were no amounts outstanding under this
facility. The Company is in the process of seeking an expansion of this facility
to $500 million from a limited bank group.  The proposed  facility would provide
for an all-in-drawn  cost of borrowing of the London Interbank Offered Rate plus
50 basis points and a facility fee of 18.75 basis  points.  Covenants  include a
limitation on total  indebtedness  and a minimum net worth test.  The Company is
also in the process of  negotiating  a $50  million  secured  financing  for the
acquisition  of equipment  for its  Robinson  mine.  From time to time,  Tintaya
secures short-term, working capital loans from Peruvian banking institutions. At
March 31, 1995, $22.5 million was outstanding under these arrangements. 

   For additional  information relating to the Company, see "The Company" in the
accompanying Prospectus.

                                       S-6

<PAGE>
                                 USE OF PROCEEDS


     The net proceeds of this offering will be used to repay short-term debt, to
repurchase the Company's publicly traded Common Stock purchase  warrants,  $8.50
exercise price (the "Warrants"),  and for general corporate purposes,  which may
include the  repurchase or redemption of all or a portion of the Company's  $125
million principal amount of 11 1/2 % Senior  Subordinated  Notes due January 15,
2002 (the "11 1/2 % Notes") or a portion of the Company's $200 million principal
amount of 12% Senior Subordinated Notes due December 15, 2001 (the "12% Notes").
The 11 1/2 % Notes are  redeemable,  in whole or in part,  at the  option of the
Company at 108% of par, plus accrued interest,  through January 14, 1996, and at
declining amounts  thereafter.  The 12% Notes will be redeemable by the Company,
in whole or in part, at 106% of par for the period commencing  December 15, 1996
and ending December 14, 1997, and at declining amounts  thereafter.  Pending use
of the net  proceeds  of this  offering,  the  Company  intends  to invest  such
proceeds in high quality, short-term, interest-bearing securities.

     The Company  intends to commence a tender offer for the  approximately  4.1
million  Warrants  outstanding on May 16, 1995. Each Warrant entitles the holder
to purchase one share of Common Stock,  $.01 per share,  at an exercise price of
$8.50.  The  Warrants  expire on November  30,  1995.  The Company will offer to
purchase any and all of the Warrants at a purchase price of $8.25 per Warrant or
an aggregate of  approximately  $33.5  million.  The closing  sales price of the
Warrants on the New York Stock Exchange ("NYSE") Composite Tape was $7.00 on May
12, 1995. The closing sales price of the Common Stock on the NYSE Composite Tape
on such date was $15.25 per share.  Depending on the number of Warrants tendered
and  purchased in the tender offer,  the Company may purchase  Warrants or other
equity   securities  in  the  open  market  from  time  to  time  following  the
consummation of the tender offer in an amount, including amounts expended in the
tender offer, not to exceed $50 million.















                                       S-7


<PAGE>
<TABLE>
                                 CAPITALIZATION

     The following table sets forth the cash, short-term debt and capitalization
of the  Company as of March 31,  1995,  and as  adjusted  to give  effect to the
issuance  and  sale of the  Notes  offered  hereby  and the  application  of the
proceeds received  therefrom.  This table should be read in conjunction with the
consolidated  financial  statements and  accompanying  notes of Magma  appearing
elsewhere  herein or  incorporated by reference  herein and in the  accompanying
Prospectus.
<CAPTION>

                                                       AS OF MARCH 31, 1995
                                                    (DOLLAR AMOUNTS IN MILLIONS)
                                                     --------------------------
                                                                        AS
                                                            ACTUAL   ADJUSTED(1)
                                                           --------  -----------
<S>                                                         <C>           <C>     
Cash and marketable securities .........................    $   56.9      $  200.9
                                                            ========      ========
Short-term debt ........................................    $   22.5           --
                                                            ========      ========
Long-term debt:
  Notes offered hereby .................................         --       $  200.0
  12% Senior Subordinated Notes ........................       200.0         200.0
  11 1/2 % Senior Subordinated Notes ...................       125.0         125.0
  Industrial Development Authority Bonds ...............        49.7          49.7
  Promissory Note ......................................         5.0           5.0
  Capitalized Lease Obligations ........................        10.6          10.6
                                                            --------      --------
     Total long-term debt ..............................    $  390.3      $  590.3
                                                            --------      --------
Stockholders' equity:
  Preferred Stock, $0.01 par value, 50,000,000 shares
    authorized:
  5 5/8 % Cumulative Convertible Preferred Stock,
    Series D, $0.01 par value, 2,000,000 shares
    issued and outstanding .............................         --            --
  6% Cumulative Convertible Preferred Stock, Series
    E, $0.01 par value, 2,000,000 shares issued and
    outstanding ........................................         --            --
  Common Stock, $0.01 par value, 100,000,000 shares
    authorized; 46,112,065 shares issued and outstanding         0.5           0.5
  Capital in excess of par value, as adjusted ..........       626.0         592.5
  Retained earnings since January 1, 1992 ..............       186.7         186.7
  Unearned stock grant compensation ....................        (3.5)         (3.5)
                                                            --------      --------
      Total stockholders' equity .......................    $  809.7      $  776.2
                                                            --------      --------
      Total stockholders' equity and long-term debt ....    $1,200.0      $1,366.5
                                                            ========      ========
<FN>
- --------
(1) Gives effect to the repayment of short-term  debt and the  repurchase of the
    Company's outstanding Warrants at $8.25 per Warrant. Does not give effect to
    the  repurchase  of  any  other  equity  securities  or  any  repurchase  or
    redemption of the Company's  outstanding Senior Subordinated Notes. See "Use
    of Proceeds."  Amounts do not give effect to the expenses of the offering or
    the underwriting discount.
</FN>
</TABLE>

                                       S-8


<PAGE>
                  SUMMARY FINANCIAL, OPERATING AND RESERVE DATA

     Set forth  below is certain  historical  financial,  operating  and reserve
information.  The  historical  information  of  Magma  Copper  Company  has been
summarized  from the  audited  consolidated  financial  statements  included  in
Magma's  Annual Report on Form 10-K for the year ended December 31, 1994 and the
unaudited condensed  consolidated financial statements included in its Quarterly
Report on Form 10-Q for the three months ended March 31, 1995, which reports are
incorporated  herein by reference.  The results for the three months ended March
31,  1995 are  unaudited  but, in the opinion of  management,  all  adjustments,
consisting  only  of  normal   recurring   adjustments   necessary  for  a  fair
presentation of results of operations for such periods, have been included. More
comprehensive  financial,  operating and reserve information is included in such
reports  and the  information  that  follows is  qualified  in its  entirety  by
reference to such reports and all of the financial  statements and related notes
contained  therein.  

            (dollar amounts in millions, except average realization,
                      earnings per share and reserve data)

<TABLE>
<CAPTION>
                                                                                                       THREE MONTHS ENDED
                                                                           YEAR ENDED DECEMBER 31,          MARCH 31,
                                                                        -----------------------------  -------------------
                                                                           1992     1993       1994     1994(12)     1995
                                                                        --------- ---------  ---------  ---------  ---------
<S>                                                                     <C>        <C>        <C>        <C>        <C>     
FINANCIAL DATA:
  STATEMENT OF OPERATIONS DATA:
    Sales(1) .......................................................... $  819.5   $  792.4   $  889.6   $  175.5   $  297.5
    Cost of products sold .............................................   (630.4)    (639.4)    (654.5)    (140.2)    (195.9)
    Depreciation, depletion and amortization ..........................    (54.6)     (65.4)     (75.1)     (15.1)     (16.8)
    Selling, general and administrative(1) ............................    (19.4)     (22.1)     (22.7)      (5.2)      (8.0)
    Exploration, research and development .............................     (2.7)      (9.3)     (13.5)      (3.2)      (4.6)
    Restructure expense ...............................................      --        (2.0)       --         --         --
                                                                        --------   --------   --------   --------   --------
    Income from operations ............................................    112.4       54.2      123.8       11.8       72.2
    Interest expense, net(2) ..........................................    (35.8)     (26.4)     (14.3)      (2.4)      (4.3)
    Other income ......................................................      4.3        3.7        0.3        1.0        0.7
                                                                        --------   --------   --------   --------   --------
    Income before income taxes and extraordinary item .................     80.9       31.5      109.8       10.4       68.6
    Income tax provision ..............................................    (22.6)      (8.7)     (22.4)      (2.8)     (16.8)
    Extraordinary item, net of tax(3) .................................     (3.0)       --         --         --         --
    Cumulative effect of accounting changes, net of tax ...............      --        (0.9)       --         --         --
                                                                        --------   --------   --------   --------   --------
    Net income ........................................................ $   55.3   $   21.9   $   87.4   $    7.6   $   51.8
                                                                        ========   ========   ========   ========   ========
    Net income per common share, assuming full
      dilution(4) ..................................................... $   1.19   $   0.40   $   1.38   $   0.10   $   0.82
                                                                        ========   ========   ========   ========   ========
    EBITDA(5) ......................................................... $  171.3   $  125.3   $  199.2   $   27.9   $   89.7
    Ratio of earnings to fixed charges(6) .............................     2.7x       1.5x       3.1x       1.5x       6.4x
    Ratio of earnings to combined fixed charges and
      preferred stock dividends(6) ....................................     2.0x       1.4x       2.3x       1.1x       4.8x

  BALANCE SHEET DATA (AT END OF PERIOD):
    Cash and marketable securities .................................... $  242.2   $  339.3   $   88.2   $  326.0   $   56.9
    Net property, plant and mine development ..........................    783.6      866.4    1,217.2      882.6    1,299.8
    Total assets ......................................................  1,156.5    1,350.8    1,576.6    1,360.6    1,640.0
    Long-term debt (exclusive of current portion) .....................    395.0      392.3      386.8      390.1      384.7
    Stockholders' equity ..............................................    465.4      680.2      760.1      684.4      809.7

  OPERATING DATA:
    Production:
      Magma source copper (millions of pounds)(7) .....................    559.5      563.4      595.4      151.8      172.0
      Concentrate smelted (thousands of tons)(8) ......................  1,060.1    1,076.0    1,208.0      264.0      318.0
      New Fine copper (millions of pounds)(9) .........................    771.8      845.6      888.6      209.1      225.3
      Gold contained in residues and ore (thousands of
        ounces)(10) ...................................................    106.9      103.4       77.0       20.2       26.7
      Silver contained in residues (thousands of ounces)(10)  .          2,726.6    2,947.9    3,289.0      731.7      881.1
      Molybdenum disulfide production (millions of pounds
        molybdenum contained) .........................................      5.2        4.8        4.9        1.2        1.2
    Average realization (including hedging activities):
      Copper--per pound ............................................... $   1.00  $    0.94  $    0.98  $    0.84  $    1.32
      Gold--per ounce .................................................   377.47     359.05     382.58     378.58     375.06
      Silver--per ounce ...............................................     4.00       4.34       5.16       4.90       4.19
      Molybdenum--per pound ...........................................     1.80       1.91       4.57       2.35      10.14
</TABLE>

                                                       RECOVERABLE COPPER
                                                         (THOUSANDS OF
                                                             POUNDS)
                                                       -------------------
Reserve data (at January 1, 1995)(11):
Proven/probable reserves in committed mine
plans ..........................................            9,663,259

                                        (Footnotes to table appear on next page)

                                       S-9


<PAGE>
(Footnotes to table on previous page)
- --------
 (1) Certain  freight costs have been  reclassified  as a deduction from revenue
     rather than as a selling  expense.  All years have been restated to reflect
     this change.

 (2) Excludes  capitalized  interest of $17.7  million for 1994 and $7.8 million
     for 1993,  and $5.8 million and $4.8  million for the quarters  ended March
     31, 1995 and 1994, respectively.

 (3) In May 1992,  the Company  redeemed  all $100  million of its  Subordinated
     Reset Debentures and paid a premium on the early repayment of this debt.

 (4) There were no cash dividends paid or declared on Common Stock during any of
     these periods.

 (5) "EBITDA" is earnings  before net  interest  expense,  taxes,  depreciation,
     depletion and amortization.

 (6) In calculating the ratios:  (i) "earnings"  consist of income before taxes,
     accounting changes and extraordinary  items plus fixed charges adjusted for
     capitalized interest and amortization of previously  capitalized  interest;
     (ii) "fixed charges" consist of interest (including  capitalized  interest)
     and the estimated  interest portion of lease rental expenses,  amortization
     of debt expenses and write- offs of loan costs;  and (iii) "preferred stock
     dividends" include dividends paid in zero coupon notes and shares of Common
     Stock.  In calculating the ratio of earnings to fixed charges and preferred
     stock dividends,  the preferred stock dividend requirements were assumed to
     be  equal  to  the  pretax   earnings   required  to  cover  such  dividend
     requirements.  The  amount  of  such  pretax  earnings  required  to  cover
     preferred  stock  dividends was computed using tax rates for the applicable
     year.  Preferred  stock dividends are included in total "fixed charges" and
     deducted from "earnings."

 (7) Saleable copper contained in concentrates plus electrowon copper.

 (8) Includes  all new  sulfide  concentrate  smelted by the Company for its own
     account and concentrate  smelted for others on a custom basis and shipments
     of unrefined copper.

 (9) Includes  all  electrolytic  copper  produced  by the  Company  for its own
     account and refined copper produced for others on a custom basis.

(10) Includes production from the Company's concentrates and the Company's share
     of production from custom concentrates.

(11) All  reserves  were   determined   based  upon  a  pricing   assumption  of
     approximately $0.80 per pound of copper.

(12) In November  1994,  Magma  acquired  Tintaya.  The pro forma effects of the
     acquisition  as if it had occurred on January 1, 1994 are  presented in the
     Company's  Annual Report on Form 10-K for 1994,  incorporated  by reference
     herein.  For the  three-month  period ended March 31,  1994,  the pro forma
     effects of the  acquisition  (as if it had occurred on January 1, 1994) are
     as follows:

                                                  THREE MONTHS ENDED
                                                       MARCH 31,
                                                  ------------------
                                                         1994
                                                  ------------------
                                                    (IN MILLIONS
                                                       EXCEPT
                                                    EARNINGS PER
                                                     SHARE DATA)

Total revenue ............................             $194.3
Income before extraordinary items  .......               10.1
Net income ...............................               10.1
Primary earnings per share ...............               0.15
Earnings per share assuming full dilution                0.15(a)

- --------
(a) The Company's convertible  preferred  stock  is  not  included  in the fully
    diluted calculation as its effects are antidilutive.

                                      S-10
<PAGE>
                    DESCRIPTION OF CERTAIN TERMS OF THE NOTES

     The following  description  of certain  terms of the Notes  offered  hereby
supplements and, to the extent inconsistent therewith,  replaces the description
of the general  terms and  provisions  of the Debt  Securities  set forth in the
Prospectus.  Capitalized  terms used  herein and not  defined are defined in the
Indenture and, in some cases, the accompanying Prospectus.

GENERAL

     The Notes will be issued under an indenture,  dated as of May 15, 1995 (the
"Senior Subordinated Indenture"),  between the Company and State Street Bank and
Trust Company, as Trustee (the "Trustee"),  which is more fully described in the
Prospectus,  and a first supplemental indenture dated as of May 15, 1995 between
the Company and the Trustee (the "First Supplemental Indenture" and collectively
with the Senior  Subordinated  Indenture,  the  "Indenture")  The Notes  offered
hereby  will be  limited to  $200,000,000  aggregate  principal  amount and will
mature on May 15, 2005.  Interest at the annual rate set forth on the cover page
hereof will be payable  semi-annually  on May 15, 1995 and  November  15,  1995,
commencing  November  15,  1995,  to the  persons  in whose  names the Notes are
registered  at the close of business on May 1 or November 1, as the case may be,
preceding such interest payment date. Interest on the Notes will accrue from May
__, 1995.

     The Notes will be issued as a single  series of Debt  Securities  under the
Indenture in denominations of $1,000 or any integral multiple thereof.

GLOBAL SECURITIES

     The Notes will be represented by one or more Global Securities that will be
deposited   with,   or  on  behalf  of,  The   Depository   Trust  Company  (the
"Depositary"), and will be available for purchase in denominations of $1,000 and
any integral multiple thereof.

     The  Depositary  has advised the Company as follows:  The  Depositary  is a
limited-purpose  trust company  organized  under the Banking Law of the State of
New York,  a member of the Federal  Reserve  System,  a  "clearing  corporation"
within  the  meaning of the New York  Uniform  Commercial  Code and a  "clearing
agency"  registered  pursuant to Section 17A of the Exchange Act. The Depositary
was  created  to hold  securities  of its  participants  (defined  below) and to
facilitate the clearance and settlement of transactions  among its  participants
in such  securities  through  electronic  book-entry  changes in accounts of the
participants,   thereby   eliminating   the  need  for   physical   movement  of
certificates.  The  Depositary's  participants  include  securities  brokers and
dealers,  banks,  trust  companies,  clearing  corporations  and  certain  other
organizations,  some of whom (and/or their  representatives) own the Depositary.
Access to the Depositary's  book-entry system is also available to others,  such
as banks, brokers,  dealers and trust companies that clear through or maintain a
custodial relationship with a participant, either directly or indirectly.

     No Global  Security may be  transferred  to, or registered or exchanged for
Notes  registered in the name of, any Person other than the  Depositary for such
Global Security or any nominee thereof,  and no such transfer may be registered,
unless (1) the  Depositary  (A)  notifies  the Company  that it is  unwilling or
unable to continue as Depositary for such Global  Security or (B) ceases to be a
clearing agency  registered under the Exchange Act, (2) the Company executes and
delivers to the Trustee a Company  Order that such Global  Security  shall be so
transferable,   registrable  and  exchangeable,  and  such  transfers  shall  be
registrable  or (3) there  shall have  occurred  and be  continuing  an Event of
Default with respect to the Securities evidenced by such Global Security.

     Beneficial  interests in a Global  Security will trade in the  Depositary's
same-day funds settlement  system, in which secondary market trading activity in
those  beneficial  interests  will be  required by the  Depositary  to settle in
immediately  available  funds.  There is no assurance as to the effect,  if any,
that settlement in immediately available funds would have on trading activity in
such  beneficial  interests.   Also,  settlement  for  purchases  of  beneficial
interests in the Global  Securities upon the original  issuance  thereof will be
required to be made in immediately available funds.

     See "Description of Debt Securities--Global Securities" in the accompanying
Prospectus for additional information.

                                      S-11


<PAGE>
COVENANTS

   Holders  of the  Notes  will be  entitled  to the  benefit  of the  following
covenants.

Limitation on Subordinated Liens

   Neither  the  Company nor any  Subsidiary  shall  incur,  issue,  assume,  or
guarantee  any  Debt  which  is pari  passu or (by the  express  terms  thereof)
subordinate  in right of  payment to the  Notes,  secured  after the date of the
Senior  Subordinated  Indenture by a Mortgage on any  Principal  Property of the
Company  or a  Significant  Subsidiary  or on any shares of stock or Debt of any
Significant  Subsidiary,  unless the Company secures, or causes such Significant
Subsidiary  to  secure,  the  Notes  and  any  other  Senior  Subordinated  Debt
Securities entitled to the benefit of this covenant (i) equally and ratably with
(or, at the Company's  option,  prior to) such secured Debt or (ii) in the event
such secured Debt is subordinate in right of payment to the Senior  Subordinated
Debt Securities,  prior to such secured Debt, together,  at the determination of
the Company,  with certain other Debt of the Company;  provided,  however,  that
such restriction shall not apply to the incurrence of any secured Debt if, after
giving effect  thereto,  the aggregate  amount of all such Debt so secured after
the date of the Senior  Subordinated  Indenture and then  outstanding  would not
exceed 10% of the Consolidated Assets of the Company and its Subsidiaries.

   This  restriction will not apply to, and there shall be excluded in computing
secured Debt for the purpose of such restriction, Debt secured prior to the date
of the  Senior  Subordinated  Indenture  and Debt  secured by (a)  Mortgages  on
property of, or on any shares of stock of or Debt of, any  corporation  existing
at the time such corporation becomes a Significant Subsidiary;  (b) Mortgages in
favor of the Company or a  Significant  Subsidiary;  (c)  Mortgages  in favor of
governmental  bodies to secure progress,  advance or other statutory or contract
payments;  Mortgages for taxes,  assessments,  or other governmental  changes or
levies;  or  materialmen's  mechanics',   carriers',   workmen's,   repairmen's,
landlord's,  and other like  Mortgages;  (d)  Mortgages on property,  equipment,
mines or facilities, or shares of stock or Debt, to secure the payment of all or
any part of the purchase  price  thereof or the  construction,  improvement,  or
development cost thereof, or any Debt incurred in connection therewith, existing
prior to, at the time of, or within 180 days after,  the acquisition  (including
any acquisition  through merger or consolidation) or construction,  improvement,
or development thereof, provided that any such Mortgage shall only extend to the
property,  equipment,  mines or facilities, or shares of stock or Debt, acquired
or  constructed,  improved or  developed,  or to  property  or mines,  including
undeveloped  mineralized deposits or orebodies or segments thereof, on which the
acquired or constructed,  improved or developed property,  equipment,  mines, or
facilities is situated;  (e) Mortgages securing certain  tax-exempt  obligations
issued by governmental bodies, including industrial revenue or pollution control
bonds; (f) Mortgages  created in connection with a project  financed,  or assets
acquired, with, and created to secure, a Nonrecourse Obligation;  (g) production
payments or other rights of others to the output of mines, refineries, smelters,
concentrators,  or production  facilities,  including project  financings,  with
respect to any  property  or assets  acquired,  constructed,  or improved by the
Company  or a  Subsidiary  with the  proceeds  of such  project  financings;  or
Mortgages to secure the payment of workmen's  compensation or the performance of
tenders,  bids,  or similar  contracts  (including  surety or appeal  bonds) and
Mortgages  entered into in the ordinary course of business for similar purposes;
or (h) subject to certain limitations,  any extension,  renewal, or refunding of
any Mortgage  referred to in the  foregoing  clauses (a) through (g)  inclusive.
(Section  1006 of the Senior  Subordinated  Indenture)  The Senior  Subordinated
Indenture  does not  restrict  the  Company  or any  Subsidiary  from  incurring
unsecured Debt.

Limitation on Certain Debt


   The  Company  shall  not  incur  any  Debt  which  by its  terms  is both (i)
subordinated  in right of payment to any Senior Debt and (ii) senior in right of
payment to the Notes. (Section 1007 of the Senior Subordinated Indenture) 

                                      S-12


<PAGE>
Certain Sales of Assets

   In the event the Company or any of its  Subsidiaries  consummates the sale or
transfer of an asset or group of related  assets having an aggregate fair market
value at the time of such sale or transfer (as  determined  in good faith by the
Board of Directors, whose determination thereof shall be conclusive) equal to or
exceeding  7.5% of  Consolidated  Assets,  other than in the ordinary  course of
business and sales or transfers of assets to the Company or a Subsidiary  of the
Company or other entity in which the Company or any Subsidiary  owns 50% or more
of the equity interest (a "Qualifying Asset Disposition"), the net proceeds from
such  Qualifying  Asset  Disposition  shall  within 360 days be: (i) invested or
committed  for  investment,  whether by contract or  resolution  of the Board of
Directors,  either  directly  or through a  Subsidiary  of the  Company or other
entity in which the  Company  or any  Subsidiary  owns 50% or more of the equity
interest,  in any  natural  resource  or related  business  (including,  without
limitation, the production,  exploration,  extraction, development, marketing or
refining or further  processing of natural resources and the purchase,  lease or
other acquisition of property,  equipment, mines or facilities related thereto),
or (ii) used to acquire the Notes, repay any Senior  Indebtedness of the Company
or repay any debt  which is either  pari  passu with the Notes or secured by the
assets sold or  transferred.  Pending any such  application,  such net  proceeds
shall  be  invested  in  Permitted  Investments.   (Section  401  of  the  First
Supplemental Indenture)

   Notwithstanding  the  foregoing,  the Company may use up to an  aggregate  of
$50,000,000 of the net proceeds from all Qualifying Asset Dispositions after the
date of the First Supplemental Indenture for any purpose.

   "Permitted  Investments"  means (i)  interest  bearing  deposit  accounts  in
national or state banks  having a combined  capital and surplus of not less than
$100,000,000 and a Moody's Bank Credit Report Service  short-term deposit rating
of P-1; (ii)  bankers'  acceptances  drawn on and accepted by  commercial  banks
having a  combined  capital  and  surplus  of not less than  $100,000,000  and a
Moody's Bank Credit  Report  Service  short-term  deposit  rating of P-1;  (iii)
obligations of the United States of America or any agency or  instrumentality of
the United States of America;  (iv) commercial or finance company paper which is
rated A-1 or better by Standard and Poor's or P-1 by Moody's Investors  Service;
(v) corporate debt securities  rated A+ or better by Standard & Poor's or A-1 or
better by Moody's Investors Service;  (vi) repurchase agreements with banking or
financial  institutions  having a  combined  capital  surplus  of not less  than
$100,000,000 and a Moody's Bank Credit Report Service  short-term deposit rating
of P-1 with respect to any of the foregoing obligations or securities; and (vii)
selected money market funds with assets of at least $1,000,000,000 and portfolio
guidelines  consistent  with the  foregoing  obligations  and  securities.  Such
investments  shall have maturity dates, or shall be subject to redemption by the
holder at the option of the holder, prior to the date which is one year from the
date of purchase of such investment. 

Consolidation, Merger and Sale of Assets

   The Company may not  consolidate  or merge with or into, or transfer or lease
all or substantially all of its assets to, any Person,  and any other Person may
not consolidate or merge with or into the Company,  unless (i) the Person formed
by such  consolidation  or into which the Company is merged or which acquires or
leases all or substantially  all of the assets of the Company  expressly assumes
all of the  Company's  obligations  on the Notes and under the  Indenture,  (ii)
immediately  after giving effect to such  transaction  no Event of Default shall
have happened and be  continuing,  and (iii) certain other  conditions  are met.
(Article Eight of the Senior Subordinated Indenture)

   Holders of the Notes will not have the benefit of any  specific  covenants or
provisions  in the  Indenture or the Notes that would  protect them in the event
the Company engages in or becomes the subject of a highly leveraged transaction,
other than as described  above.  Such covenants may not be waived or modified by
the Company or its Board of Directors, although holders of the Notes could waive
or modify such covenants as more fully described in the accompanying  Prospectus
under "Modification and Waiver."

OTHER

     The Notes will not be entitled to a sinking fund.

     The provisions described in the accompanying  Prospectus under "Description
of Debt Securities--Defeasance" will be applicable to the Notes.


                                      S-13


<PAGE>
                                  UNDERWRITING

     Subject  to  the  terms  and  conditions  set  forth  in  the  Underwriting
Agreement,  the  Company  has agreed to sell to each of the  Underwriters  named
below,  and each of the  Underwriters  has  severally  agreed  to  purchase  the
principal amount of the Notes set forth opposite its name below:


                                                              PRINCIPAL
       UNDERWRITERS                                        AMOUNT OF NOTES
       ------------                                        ---------------
       Goldman, Sachs & Co ............................      $
       Merrill Lynch, Pierce, Fenner & Smith,
             Incorporated
                                                             ------------
       Total ..........................................      $200,000,000
                                                             ============


   Under  the  terms  and  conditions  of  the   Underwriting   Agreement,   the
Underwriters  are  commited  to take  and pay for all of the  Notes,  if any are
taken.

   The Underwriters propose to offer the Notes in part directly to the public at
the initial public offering price set forth on the cover page of this Prospectus
Supplement  and in part to  certain  securities  dealers  at such  price  less a
concession  of % of the  principal  amount of the Notes.  The  Underwriters  may
allow,  and such  dealers  may  reallow,  a  concession  not to  exceed % of the
principal  amount of the Notes to certain  brokers and dealers.  After the Notes
are released for sale to the public,  the offering price and other selling terms
may from time to time be varied by the Underwriters.

   The Notes are a new issue of securities  with no established  trading market.
The  Company  has been  advised by the  Underwriters  that they intend to make a
market in the Notes but are not  obligated to do so and may  discontinue  market
making at any time without notice. No assurance can be given as to the liquidity
of the trading market for the Notes.

   Settlement for the Notes will be made in immediately available funds and
all secondary trading in the Notes will settle in immediately available
funds. See "Description of Certain Terms of the Notes--Global Securities."

   The  Company  has  agreed  to  indemnify  the  Underwriters  against  certain
liabilities, including liabilities under the Securities Act of 1933.


                              VALIDITY OF THE NOTES

    The  validity  of the Notes will be passed  upon for the  Company by Snell &
Wilmer  L.L.P.,  One Arizona  Center,  Phoenix,  Arizona  85004,  counsel to the
Company,  and for the  Underwriters  by  Sullivan & Cromwell,  444 South  Flower
Street, Los Angeles, California 90071.

                                      S-14


<PAGE>
                             MAGMA COPPER COMPANY
                               DEBT SECURITIES
                               PREFERRED STOCK
                                 COMMON STOCK
                                   WARRANTS

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

    Magma Copper Company  ("Magma" or the "Company") may offer from time to time
(i) Debt Securities ("Debt Securities"),  consisting of debentures, notes and/or
other unsecured  evidences of  indebtedness in one or more series,  which may be
senior ("Senior Debt Securities"),  senior  subordinated  ("Senior  Subordinated
Debt Securities") or subordinated ("Subordinated Debt Securities"),  (ii) shares
of Preferred Stock, $.01 par value per share ("Preferred  Stock") in one or more
series, (iii) shares of Common Stock, $.01 par value per share ("Common Stock"),
or (iv) Warrants  ("Warrants") to purchase Debt  Securities,  Preferred Stock or
Common Stock (Debt  Securities,  Preferred Stock,  Common Stock and Warrants are
collectively referred to as the "Securities"),  at an aggregate initial offering
price not to exceed U.S.  $300,000,000,  at prices and on terms to be determined
at the time of sale.

    The  accompanying  Prospectus  Supplement  sets  forth  with  regard  to the
particular Securities in respect of which this Prospectus is being delivered (i)
in  the  case  of  Debt  Securities,  the  title,  aggregate  principal  amount,
denominations  (which may be in United States dollars, or in any other currency,
currencies or currency unit,  including the European  Currency Unit),  maturity,
rate of  interest,  if any  (which  may be  fixed or  variable),  or  method  of
calculation thereof,  time of payment of any interest,  any terms for redemption
at the option of the Company or the holder, any terms for sinking fund payments,
subordination terms, if any, any conversion or exchange rights, any listing on a
securities  exchange,  the initial public  offering price and any other terms in
connection with the offering and sale of such Debt Securities,  (ii) in the case
of  Preferred  Stock,  the  designation,  number  of  shares,  stated  value and
liquidation  preference per share, initial public offering price,  dividend rate
(or method of calculation  thereof),  dates on which  dividends shall be payable
and dates from which  dividends  shall  accrue,  any  redemption or sinking fund
provisions,  any conversion or exchange rights,  whether the Company has elected
to offer the Preferred  Stock in the form of depositary  shares,  any listing of
the Preferred  Stock on a securities  exchange and any other terms in connection
with the offering and sale of such Preferred Stock,  (iii) in the case of Common
Stock,  the number of shares of Common Stock,  the initial public offering price
and the terms of the offering  thereof,  and (iv) in the case of  Warrants,  the
number and terms thereof,  the designation and the number of Securities issuable
upon their  exercise,  the  exercise  price,  any listing of the Warrants or the
underlying  Securities on a securities  exchange,  the initial  public  offering
price and any other terms in connection with the offering,  sale and exercise of
the  Warrants.  The  Prospectus  Supplement  will also contain  information,  as
applicable,  about  certain  United  States  Federal  income tax  considerations
relating  to the  Securities  in  respect  of  which  this  Prospectus  is being
delivered.

   The Company's Common Stock is listed on the New York Stock Exchange
(Symbol: "MCU"). Any Common Stock offered will be listed, subject to notice
of issuance, on such exchange.

   The  Company  may  sell  Securities  to or  through  underwriters  acting  as
principals  for their own  account  or as agents,  and also may sell  Securities
directly to other purchasers or through agents designated from time to time. The
accompanying  Prospectus  Supplement sets forth the names of any underwriters or
agents  involved  in the  sale  of the  Securities  in  respect  of  which  this
Prospectus  is  being  delivered,  the  amounts  of  Securities,  if any,  to be
purchased by underwriters and the compensation,  if any, of such underwriters or
agents. See "Plan of Distribution" herein.


    FOR A DISCUSSION OF CERTAIN FACTORS THAT SHOULD BE CONSIDERED BY PROSPECTIVE
INVESTORS, SEE "INVESTMENT CONSIDERATIONS."
                   
                              -------------------

  THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
       EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
           SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES
            COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY OF THIS
              PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
                               CRIMINAL OFFENSE.
                   
                              -------------------

                 The date of this Prospectus is April 21, 1994.

<PAGE>
                            AVAILABLE INFORMATION

    Magma  is  subject  to the  informational  requirements  of  the  Securities
Exchange  Act of 1934,  as  amended  (the  "Exchange  Act"),  and in  accordance
therewith  files  reports,  proxy  statements  and  other  information  with the
Securities  and Exchange  Commission  (the  "Commission").  The  reports,  proxy
statements  and other  information  filed by Magma  with the  Commission  can be
inspected and copied at the Commission at Room 1024,  Judiciary Plaza, 450 Fifth
Street, N.W.,  Washington,  D.C. 20549, and at the following regional offices of
the Commission:  7 World Trade Center,  13th Floor, New York, New York 10007 and
Northwestern  Atrium  Center,  500 West  Madison  Street,  Suite 1400,  Chicago,
Illinois 60661- 2511. Copies of such information can be obtained from the Public
Reference Section of the Commission,  450 Fifth Street, N.W.,  Washington,  D.C.
20549, at prescribed  rates.  Magma's Common Stock,  par value $.01 per share, 5
5/8 %  Cumulative  Convertible  Preferred  Stock,  Series D, par value  $.01 per
share, 6% Cumulative  Convertible  Preferred Stock, Series E, par value $.01 per
share, and Common Stock purchase  warrants,  $8.50 exercise price, are listed on
the New York Stock Exchange  ("NYSE") and similar  information  can be inspected
and copied at the NYSE, 20 Broad Street, 17th Floor, New York, New York 10005.

    This Prospectus  constitutes a part of a registration  statement on Form S-3
(the  "Registration  Statement")  filed by the Company with the Commission under
the Securities Act of 1933, as amended (the  "Securities  Act"). As permitted by
the rules and  regulations of the Commission,  this Prospectus  omits certain of
the information contained in the Registration  Statement and reference is hereby
made to the Registration  Statement and related exhibits for further information
with  respect to the  Company  and the  Securities  offered  hereby.  Statements
contained herein  concerning the provisions of any documents filed as an exhibit
to the  Registration  Statement or otherwise  filed with the  Commission are not
necessarily complete, and in each instance reference is made to the copy of such
document so filed.  Each such  statement  is  qualified  in its entirety by such
reference.

               INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

    The following documents have been filed by Magma with the Commission and are
hereby incorporated by reference into this Prospectus: (i) Annual Report on Form
10-K for the fiscal year ended  December 31, 1993,  and (ii) the  description of
the Common Stock  contained in the Company's Form 8-A filed on October 22, 1992.
All other documents and reports filed pursuant to Sections  13(a),  13(c), 14 or
15(d) of the  Exchange  Act from the date of this  Prospectus  and  prior to the
termination of the offering of the Securities shall be deemed to be incorporated
by reference herein and shall be deemed to be a part hereof from the date of the
filing of such reports and documents.

    Any  statement  contained  in  a  document  incorporated  or  deemed  to  be
incorporated  by reference  herein shall be deemed to be modified or  superseded
for purposes of this Prospectus to the extent that a statement  contained herein
or in  any  subsequently  filed  document  which  also  is or  is  deemed  to be
incorporated by reference herein modifies or supersedes such statement. Any such
statement so modified or superseded  shall not be deemed,  except as so modified
or superseded, to constitute a part of this Prospectus.

    The Company  will  provide  without  charge to each person to whom a copy of
this Prospectus is delivered,  on written or oral request of such person, a copy
of any or  all  documents  which  are  incorporated  herein  by  reference  (not
including the exhibits to such documents,  unless such exhibits are specifically
incorporated by reference in the document which this  Prospectus  incorporates).
Requests should be directed to Mr. Richard Johnson,  Assistant Treasurer, at the
Company's  principal  executive offices located at 7400 North Oracle Road, Suite
200, Tucson, Arizona 85704, telephone number (602) 575-5600.

                                2

<PAGE>
                                 THE COMPANY

    Magma is a fully integrated  producer of electrolytic copper and ranks among
the largest U.S. copper producers.  Magma's principal  products are high quality
copper  cathode and high  quality  copper rod,  the latter of which is the basic
feedstock of the copper wire and cable industry.

    The Company owns and operates underground copper mines at its San Manuel and
Superior  Mining  Divisions,  open-pit  copper mines at its San Manuel and Pinto
Valley Mining Divisions,  and in situ leaching  operations at its San Manuel and
Pinto Valley Mining Divisions, all in southeastern Arizona.

    Magma  operates  the largest and most modern  copper  smelting  and refining
complex in the United States through its wholly owned  subsidiary,  Magma Metals
Company.  The smelter has a rated  production  capacity of 1.25  million tons of
copper  concentrate per year,  which  represents up to 25% of U.S.  smelting and
refining  capacity.  In  addition  to  smelting  and  refining  its  own  copper
concentrate  production,  the Company smelts and refines a substantial amount of
copper concentrates on a custom basis for, or purchased from, third parties, the
profits from which reduce the  Company's  overall  break-even  cost of producing
copper.

    Magma  was  a  wholly  owned   subsidiary  of  Newmont  Mining   Corporation
("Newmont")  from 1969 until March 1987, and remained under its influence  until
November 1988, when Magma undertook a recapitalization (the  "Recapitalization")
in which it purchased all of the remaining equity interests held by Newmont.

RECENT OPERATING PERFORMANCE

    Since the  Recapitalization,  the Company  has  substantially  improved  its
operating performance.  The Company has increased copper production from its own
sources by  approximately  40% from 402  million  pounds in 1988 to 563  million
pounds  in  1993.   Production  from  the  leaching,   solvent   extraction  and
electrowinning  ("SX-EW")  operations increased by 87% from 86 million pounds in
1988 to 161 million  pounds in 1993.  The Company's  total smelting and refining
production has increased by approximately  48% from 414 million pounds of copper
in 1988 to 615 million pounds in 1993.  Net cash operating  costs of copper sold
have decreased from $.78 per pound ($.93 adjusted for inflation) in 1988 to $.66
per pound in 1992.  In 1993,  despite  the  effects of  extraordinary  rains and
flooding  early in the year, the Company was able to maintain the $.66 per pound
cost level that had been achieved in 1992.  Further,  as a result of intensified
cost reduction efforts,  cash operating costs decreased to $.63 per pound in the
third  quarter  and  $.61 per  pound in the  fourth  quarter  of 1993.  Net cash
operating  costs per pound  represent (a) operating costs of Magma source copper
sold (excluding depreciation, depletion and amortization) reduced by credits for
by-products and profits from custom processing  divided by (b) total pounds sold
from  Magma  sources.  The  Company  attributes  its  increased  production  and
productivity  and  reduction in  operating  costs  primarily  to improved  labor
relations,  which  culminated in the  execution in 1991 of a 15-year  collective
bargaining  agreement,  as well as the use of innovative  operating  technology,
including an increase in production from lower cost SX-EW technology.

    During  1993,  the  Company's   operations   were   adversely   affected  by
extraordinary  rainfall  conditions,  lower copper prices (which were  partially
offset by hedging  activities) and other factors.  As a result,  total sales and
net income were $792.4  million and $21.9  million,  respectively,  for the year
ended  December  31,  1993,  compared  to  $819.5  million  and  $55.3  million,
respectively,  for the year ended December 31, 1992. The Company  estimates that
the extraordinary  rainfalls  reduced net income by approximately  $15.5 million
during  the  first six  months of 1993.  Although  the  Company  is still in the
process of repairing,  upgrading and expanding  certain of its  facilities  that
were damaged by the  rainfalls,  operations  that were affected by the rainfalls
returned to normal in the second half of 1993.

    The Company's  operations are highly dependent on copper prices.  As a hedge
against  lower copper  prices,  the Company  purchased put options on the London
Metal Exchange  ("LME")  covering 511.5 million pounds of 1993  production at an
exercise price of $.95 per pound.  During the second,  third and fourth quarters
of 1993, the Company  exercised option  contracts  totalling 384 million pounds.
Largely  as a result of these  options,  Magma was able to  achieve  an  average
realized price per pound of $.94 in 1993, as compared to an average LME price of
$.87 per pound. For the first and second quarters of

                                3

<PAGE>
1994, the Company has purchased put option contracts covering 287 million pounds
of  production,  providing a minimum  realized  price of $.72 per pound on a LME
basis.  For the third and fourth  quarters of 1994, the Company has entered into
LME futures  contracts  covering 121 million  pounds of production at an average
price of $.82 per pound and purchased put option contracts  covering 176 million
pounds of production that provide a minimum  realized price of $.74 per pound on
a LME basis.  The Company has also purchased put option  contracts  covering 374
million  pounds of its  production  during  the  first  three  quarters  of 1995
providing  a minimum  realized  price of $.74 per pound on a LME basis.  Coupled
with expected  reductions in cash operating costs, the Company believes that the
protection  afforded by the  options  should  result in positive  cash flow from
operations  during  1994.  In addition to its hedging  program,  the Company has
accelerated measures designed to reduce its cash operating costs, with a view to
maintaining sufficient cash balances, cash flow and borrowing capacity necessary
to fund selected development projects.

DEVELOPMENT OPPORTUNITIES

    The  Company  is  currently   pursuing  or  evaluating  several  major  mine
development  opportunities,  as well as an expansion and upgrade to its smelting
and refining complex.

    Robinson  Mining  District.  In 1991,  the  Company  completed  a series  of
transactions in which it acquired the Robinson Mining District ("Robinson") near
Ely,  Nevada,  for an aggregate cost of  approximately  $58 million.  Based upon
drill and assay results, the Company believes that Robinson has 252 million tons
of  proven/probable  sulfide ore reserves  with an average grade of .553% copper
and .0102 ounces of gold per ton, and 57 million tons of gold oxide ore reserves
with an average  grade of .0086  ounces of gold per ton.  The Company  estimates
that Robinson could produce  approximately 135 million pounds of copper annually
for 16 years through traditional  methods.  In addition,  these studies estimate
that  Robinson  could  produce an average of 97,300  ounces of gold and  390,000
ounces of silver  annually from sulfide copper ore and 17,500 ounces of gold per
year from leaching operations during this time period. The Company is conducting
a further  study of this  property  to  determine  the  opportunity  to increase
production  and lower  costs,  which may  require  greater  capital  investment.
Development of Robinson requires, among other factors, appropriate environmental
and operating permits.  In early 1993, the Bureau of Land Management  determined
that an Environmental  Impact Statement  ("EIS") must be prepared to analyze the
Company's proposed  re-development of the property. The Company believes the EIS
process will be  completed  during 1994 and  production  will begin in the first
quarter of 1996, although there can be no assurance in this regard.

    Kalamazoo.  The Company's  Kalamazoo  orebody,  which is near its San Manual
underground  mine, is comprised of two levels,  an upper level which consists of
approximately 33 million tons of proven/probable  ore reserves and a lower level
which contains  approximately 186 million tons of proven/probable  ore reserves.
In March 1993, the Company's  Board of Directors  approved  funding for, and the
Company has begun, the development of the lower Kalamazoo orebody.  Based on the
current mine plan,  this project is scheduled to produce 2.13 billion  pounds of
copper during the period from 1996 to 2009.

    Florence.  In July 1992,  the Company  completed the  acquisition of a large
copper deposit near Florence,  Arizona.  The Company's  project team has begun a
pre-feasibility study to determine the opportunity for the use of SX-EW leaching
technology at this deposit.

    Smelting  and Refining  Complex.  The Company is in the process of expanding
and  upgrading  its  smelting  and refining  complex.  During 1993,  the smelter
produced 681 million pounds of copper in anode form,  significantly in excess of
its design  capacity of 600 million  pounds.  The expansion will increase design
capacity  to 720  million  pounds per year.  The  increase  in design  capacity,
scheduled  to be  completed  in the second  quarter of 1994,  should  enable the
Company to maintain its custom smelting business even with the expected increase
in smelting from Magma source copper when the Robinson  Mining  District  begins
production.  In addition,  the smelter project, which includes the addition of a
new,  large  acid  plant,  will  further  improve  the  smelter's  environmental
performance.

    Capital Requirements. Based on present estimates development of the Robinson
Mining District could require capital expenditures on the order of approximately
$300 million for traditional concentrate

                                4

<PAGE>
production,  development of the lower  Kalamazoo  orebody could require  capital
expenditures  of  approximately  $140  million and  expansion  of the  Company's
smelting and refining  complex is expected to require  capital  expenditures  of
approximately $85 million,  for an aggregate of approximately  $500 million.  Of
this amount, $105 million had been expended toward these projects as of December
31,  1993,  $90 million is expected to be expended in 1994 and the  remainder is
expected  to be spent over the next four  years.  The  foregoing  estimates  are
subject to change. The Company has not yet made any determination of the cost to
develop the Florence property.

    The Company intends to finance any projects that it undertakes with internal
cash flow, cash reserves and additional financings if necessary.  The completion
or success of these  projects or, in some cases,  the decision to undertake them
is subject to a number of  factors,  including  the price of copper  and,  where
appropriate,  the completion of favorable  feasibility  studies,  permitting and
other factors. Many of these factors are outside of the Company's control. There
can be no assurance that the Company will  undertake all of these  opportunities
or that, if undertaken,  they will prove successful. If the Company is unable to
replace  its  reserves  from the mine  development  projects  being  pursued  or
evaluated,  or with other  reserves  identified  or acquired in the future,  the
Company's  dependence  upon third party sources to supply copper  concentrate to
its smelting and refining operations would increase.

REFINANCINGS AND RELATED MATTERS

    In the past  three  years,  the  Company  has taken a number of  significant
actions in an effort to enhance its financial  position on a prospective  basis,
including the following.

    Debt Refinancing.  Through a series of new debt offerings and redemptions of
previously  outstanding  indebtedness,  the Company has refinanced almost all of
its outstanding public indebtedness, reducing the weighted average interest rate
on its outstanding debt from 14.1% to 10.7%. The refinancings resulted in a $9.7
million  decrease in net interest expense in 1992 over 1991, which was partially
offset by a $3 million extraordinary loss related to premiums paid on early debt
repayments.

    In May 1993,  the Company  established  a $200 million  unsecured  revolving
credit facility.  The facility has a five-year term and matures in May 1998. The
loan agreement evidencing the facility limits the ability of the Company and its
subsidiaries  to  encumber  their  assets and  property,  to enter into sale and
leaseback transactions,  to enter into mergers and consolidations or to sell all
or  substantially  all of their assets (or certain  identified  assets),  and to
repurchase or redeem  subordinated  indebtedness,  including Senior Subordinated
Debt   Securities  and   Subordinated   Debt   Securities,   except  in  certain
circumstances.  The loan agreement also limits the incurrence of indebtedness by
the  Company's  subsidiaries,  requires  that the Company  and its  subsidiaries
maintain a minimum  consolidated  net worth,  and establishes a maximum ratio of
debt to  capitalization  and a minimum interest  coverage ratio. As of March 31,
1994, there were no outstanding  borrowings under the revolving credit facility.
Any borrowings  under the credit  facility will constitute  Senior  Indebtedness
with respect to each series of Senior  Subordinated  Securities and Subordinated
Securities, and will rank senior in right of payment thereto.

    Enhanced  Capital  Base.  During  1993,  the Company  raised $200 million of
additional equity through two convertible preferred stock offerings. In a public
offering  completed in July 1993, the Company issued $100 million of convertible
preferred  stock that carries a 5 5/8 % cumulative  dividend.  In December 1993,
the Company completed a public offering of $100 million of convertible preferred
stock that carries a 6% cumulative dividend.

    In December 1992, the Company conducted an exchange offer under which all of
its then  outstanding  Series B Cumulative  Convertible  Exchangeable  Preferred
Stock was exchanged for Common Stock.  This preferred stock carried a cumulative
dividend  obligation  in excess of $9 million  per year,  which  would have been
payable solely in cash beginning in November 1993.

    In October  1992,  the Company's  stockholders  voted to amend the Company's
Certificate  of  Incorporation  to eliminate  the dual class,  disparate  voting
rights  structure of its Common  Stock.  The Company now has one class of Common
Stock, $.01 par value per share.

                                5

<PAGE>
Accounting  Adjustments.  At the end of 1991,  the Company  implemented  various
accounting  adjustments in conjunction  with the  reorganization  of the Company
into distinct profit centers.  Although these adjustments reduced  stockholders'
equity and  lowered  prior  earnings,  they did not impact  the  Company's  cash
position or cash flow.

                          INVESTMENT CONSIDERATIONS

    Copper Price Volatility.  The  profitability of the Company's  operations is
largely  dependent  upon the worldwide  market price for copper.  A one cent per
pound change in the average price  received for the Company's  1993 output would
have affected earnings before interest,  taxes, depreciation and amortization by
an estimated $5.6 million.  Copper prices have historically been subject to wide
fluctuations  and are  affected  by numerous  factors  beyond the control of the
Company,  including  international economic and political conditions,  levels of
supply and demand,  the availability and cost of copper  substitutes,  inventory
levels  maintained  by copper  producers  and others  and,  to a lesser  degree,
inventory carrying costs (primarily interest charges) and international exchange
rates. From time to time the Company engages in hedging  activities in an effort
to stabilize the Company's  cash flow in the event of declining  copper  prices.
Depending  upon the  hedging  program  employed,  market  conditions  and  other
factors,  hedging  activities could reduce the cash flow which the Company would
otherwise realize.

    Competition.  Certain  foreign and domestic  copper  producers  benefit from
higher-grade  orebodies than those owned by the Company.  Further,  most foreign
producers  benefit  from  lower  labor  rates and less  stringent  environmental
regulation than United States producers. Many foreign producers maintain maximum
production to meet  government-imposed  employment and foreign  exchange revenue
goals,  sometimes  without regard to the condition of the world copper market or
the  profitability  of their  mining  operations.  The Company and other  copper
producers  also  compete  with  manufacturers  of  other  materials,   including
aluminum, stainless steel, plastics and fiber optic cables. Should copper prices
increase, use of these alternative materials may also increase.

    Environmental  Regulation.  The mining and mineral processing industries are
subject  to  extensive  regulations  for  the  protection  of  the  environment,
including  regulations  relating  to air and water  quality,  mine  reclamation,
remediation,  solid and hazardous  waste handling and disposal and the promotion
of occupational safety. From time to time the Company is cited for noncompliance
with  applicable  environmental  laws  and  regulations.  However,  the  Company
believes  that it is  currently  in  material  compliance  with  these  laws and
regulations  and,  although  there  can be no  assurance  in this  regard,  also
believes that there is no pending  environmental matter that is likely to have a
material  adverse  effect on its results of  operations.  Future  regulations or
regulatory  interpretations  could  require the Company to modify or curtail its
operations or incur substantial  additional expense. In this regard, the Company
cannot  predict,  at this time, the level of new emissions  controls and related
costs which may be required for it to comply with standards  governing emissions
of sulphur,  particulates  and air toxics that are expected to be adopted  under
the federal Clean Air Act Amendments of 1990 and the Arizona Clean Air Act.

    Industry  Risks;  Reserves.  The  Company is  subject  to the  normal  risks
encountered  in the mining  industry,  such as unusual or unexpected  geological
formations,  cave-ins,  flooding, fires,  environmental issues and water issues.
The Company's  mineral  reserves may not conform to  geological,  geomechanical,
metallurgical or other expectations with the result that the volume and grade of
reserves  recovered  and  rates  of  production  may be less  than  anticipated.
Further,  market price fluctuations in copper,  changes in operating and capital
costs and other factors may affect ore reserves.

    Development  Projects.  The existing open pit and  underground  mines at the
Company's  San  Manuel  Division  are  scheduled  to  close  in 1994  and  1998,
respectively, and its open pit mine at the Pinto Valley Division is scheduled to
close in 1999.  The  Company  is  pursuing  or  evaluating  several  development
opportunities  in an effort to enhance its ore reserves.  The Company is also in
the process of expanding  and  upgrading  its  smelting  and  refining  complex.
Development of these projects will require  several  hundred  million dollars in
capital investment. To the extent undertaken, the Company intends to finance its
development  projects  with internal  cash flow,  cash  reserves and  additional
financings as

                                6

<PAGE>
necessary. The success of these projects is subject to a number of factors, some
of which are outside of the  Company's  control.  The cost  estimates  for these
projects are subject to change. If the Company is unable to replace its reserves
from the mine  development  projects  being pursued or evaluated,  or with other
reserves  identified or acquired in the future,  the Company's  dependence  upon
third party  sources to supply copper  concentrate  to its smelting and refining
operations would increase.

                               USE OF PROCEEDS

    The Company anticipates that the net proceeds of the sales of the Securities
will be used for  general  corporate  purposes  or such other uses as may be set
forth in a Prospectus Supplement.

         RATIO OF EARNINGS TO FIXED CHARGES AND EARNINGS TO COMBINED
           FIXED CHARGES AND PREFERRED STOCK DIVIDEND REQUIREMENTS

    For  purposes of the  following  ratios:  (i)  "earnings"  consist of income
before  taxes,  accounting  changes and  extraordinary  items plus fixed charges
adjusted for capitalized  interest and  amortization  of previously  capitalized
interest;  (ii)  "fixed  charges"  consist of  interest  (including  capitalized
interest)  and  the  estimated   interest  portion  of  lease  rental  expenses,
amortization of debt expenses and write-offs of loan costs; and (iii) "preferred
stock  dividend  requirements"  include  dividends paid in zero coupon notes and
shares of Common Stock.

    In calculating the ratio of earnings to combined fixed charges and preferred
stock dividend  requirements,  the preferred  stock dividend  requirements  were
assumed  to be equal to the pretax  earnings  required  to cover  such  dividend
requirements.  The amount of such pretax  earnings  required to cover  preferred
stock dividends was computed using tax rates for the applicable year.  Preferred
stock  dividends  are  included  in total  "fixed  charges"  and  deducted  from
"earnings."

<TABLE>
<CAPTION>
                                                      YEAR ENDED DECEMBER 31,
                                                ----------------------------------
                                                  1989   1990   1991   1992   1993
                                                ------ ------ ------ ------ ------
<S>                                             <C>    <C>    <C>    <C>    <C>
Ratio of earnings to fixed charges .............2.1x   2.9x     --   2.7x   1.5x
Ratio of earnings to combined fixed charges and
 preferred stock dividend requirements  ........1.9x   2.5x     --   2.0x   1.4x
</TABLE>

   Before giving effect to the non-cash accounting  adjustments taken in 1991 in
connection  with the Company's  reorganization  into distinct profit centers and
the related  adoption of  Statement  of  Financial  Accounting  Standards  Board
("FASB")  No. 109  "Accounting  for Income  Taxes" and FASB No. 106  "Employers'
Accounting  for  Postretirement  Benefits  Other  Than  Pensions,"  the ratio of
earnings to fixed charges for the year ended  December 31, 1991 was 1.8x and the
ratio of  earnings to  combined  fixed  charges  and  preferred  stock  dividend
requirements  for that year was 1.5x.  After  giving  effect to such  accounting
adjustments,  earnings were  inadequate to cover fixed charges by $167.5 million
for the year ended December 31, 1991 and were inadequate to cover combined fixed
charges and preferred  stock  dividend  requirements  by $179.8 million for that
year.

                        DESCRIPTION OF DEBT SECURITIES

    The Debt  Securities  may be issued  from time to time in one or more series
and will constitute  either Senior Debt  Securities,  Senior  Subordinated  Debt
Securities or Subordinated Debt Securities.  The particular terms of each series
of Debt  Securities  offered  hereunder,  including the nature of any variations
from the following general provisions  applicable to such Debt Securities,  will
be described in a Prospectus Supplement relating to such Debt Securities. Senior
Debt  Securities,  Senior  Subordinated  Debt Securities and  Subordinated  Debt
Securities will each be issued under a separate Indenture (herein referred to as
the  "Senior  Indenture",  "Senior  Subordinated  Indenture"  and  "Subordinated
Indenture",  respectively;  and individually an "Indenture" and collectively the
"Indentures")  to be entered  into by the Company  prior to the issuance of such
Debt Securities. The forms of Indentures have been filed as

                                7

<PAGE>
exhibits  to the  Registration  Statement.  To the extent not  included  herein,
information  regarding the trustee under an Indenture  (individually a "Trustee"
and collectively  the "Trustees") will be included in the applicable  Prospectus
Supplement relating to the Debt Securities described therein.

    The  following  discussion  includes a summary  description  of the material
terms of the  Indentures,  other than terms which are  specific to a  particular
series  of Debt  Securities  and  which  will  be  described  in the  Prospectus
Supplement relating to such series. The following summaries do not purport to be
complete and are subject to, and are  qualified  in their  entirety by reference
to, all of the provisions of the Indentures,  including the definitions  therein
of certain terms capitalized in this Prospectus.  Wherever particular  Sections,
Articles  or defined  terms of the  Indentures  are  referred  to herein or in a
Prospectus Supplement, such Sections, Articles or defined terms are incorporated
herein or therein by reference.

GENERAL

    The Debt  Securities will be general  unsecured  obligations of the Company.
The Indentures do not limit the aggregate amount of Debt Securities which may be
issued  thereunder,  and Debt  Securities may be issued  thereunder from time to
time in separate series up to the aggregate  amount from time to time authorized
by the Company for each series.

    The applicable Prospectus Supplement or Prospectus Supplements will describe
the  following  terms of the series of Debt  Securities in respect of which this
Prospectus  is being  delivered:  (1) the  title of such  Debt  Securities,  and
whether such Debt  Securities are Senior Debt  Securities,  Senior  Subordinated
Debt Securities or Subordinated Debt Securities;  (2) any limit on the aggregate
principal  amount  of  such  Debt  Securities;  (3)  whether  any of  such  Debt
Securities are to be issuable in permanent global form ("Global  Security") and,
if so, the terms and conditions, if any, upon which interests in such Securities
in global form may be exchanged,  in whole or in part, for the  individual  Debt
Securities  represented thereby; (4) the person to whom any interest on any Debt
Security  of the series  shall be payable if other than the person in whose name
the Debt  Security is  registered  on the Regular  Record Date;  (5) the date or
dates on which such Debt  Securities  will mature;  (6) the rate or rates (which
may be fixed or  variable)  of  interest,  if any, or the method of  calculation
thereof,  which such Debt Securities will bear; (7) the date or dates from which
any such  interest  will accrue,  the Interest  Payment  Dates on which any such
interest on such Debt Securities will be payable and the Regular Record Date for
any interest payable on any Interest Payment Date; (8) the place or places where
the principal of, premium,  if any, and interest on such Debt Securities will be
payable;  (9) the period or periods within which, the events upon the occurrence
of which, and the price or prices at which,  such Debt Securities may,  pursuant
to any optional or mandatory provisions,  be redeemed or purchased,  in whole or
in part, by the Company and any terms and conditions relevant thereto;  (10) the
obligations of the Company, if any, to redeem or repurchase such Debt Securities
at the  option of the  holders;  (11) the  denominations  in which any such Debt
Securities  will be  issuable,  if other  than  denominations  of $1,000 and any
integral  multiple  thereof;  (12) the currency,  currencies or currency unit or
units of payment of  principal  of and any  premium  and  interest  on such Debt
Securities  if other  than  U.S.  dollars;  (13) any  index or  formula  used to
determine the amount of payments of principal of and any premium and interest on
such Debt Securities;  (14) if the principal of, or premium, if any, or interest
on such Debt  Securities  is to be payable,  at the election of the Company or a
holder  thereof,  in one or more currencies or currency units other than that or
those in which such Debt  Securities  are stated to be  payable,  the  currency,
currencies  or  currency  units in which  payment  of the  principal  of and any
premium and interest on Debt Securities of such series as to which such election
is made  shall be  payable,  and the  periods  within  which  and the  terms and
conditions  upon  which  such  election  is to be made;  (15) if other  than the
principal  amount  thereof,  the  portion of the  principal  amount of such Debt
Securities of the series which will be payable upon acceleration of the Maturity
thereof;  (16)  whether  the  subordination   provisions  summarized  below,  or
different  subordination  provisions,  shall apply to Debt  Securities  that are
Senior  Subordinated Debt Securities or Subordinated Debt Securities and, if so,
the aggregate principal amount of Senior Indebtedness then outstanding; (17) the
applicability  of any  provisions  described  under  "Covenants  with Respect to
Senior Debt Securities" or "Covenants with Respect to Senior  Subordinated  Debt
Securities";   (18)  the   applicability  of  any  provisions   described  under
"Defeasance"; (19) the terms and conditions, if any, pursuant to

                                8

<PAGE>
which the Debt Securities are  convertible or exchangeable  into Common Stock or
other  Securities;  and  (20)  any  other  terms  of such  Debt  Securities  not
inconsistent with the provisions of the respective Indentures.

    Debt  Securities  may be issued at a discount from their  principal  amount.
United States Federal income tax considerations and other special considerations
applicable to any such Original Issue Discount  Securities  will be described in
the applicable Prospectus Supplement.

    If the purchase  price of any of the Debt  Securities  is  denominated  in a
foreign  currency or  currencies  or a foreign  currency unit or units or if the
principal  of and any premium and interest on any series of Debt  Securities  is
payable in a foreign currency or currencies or a foreign currency unit or units,
the  restrictions,  elections,  general tax  considerations,  specific terms and
other  information  with  respect to such issue of Debt  Securities  will be set
forth in the applicable Prospectus Supplement.

    The Indentures do not limit the amount of additional unsecured  indebtedness
that  the  Company  or its  subsidiaries  may  incur.  Further,  certain  of the
operations  of the  Company  are  and may in the  future  be  conducted  through
subsidiaries. To the extent so conducted, the ability of the Company to meet its
debt obligations, including obligations in respect of the Debt Securities, would
be dependent upon the earnings and cash flow of its subsidiaries, and the claims
of the holders of the Debt  Securities  will be effectively  subordinated to the
claims of creditors of the Company's subsidiaries.

    Unless otherwise specified in the resolutions or any supplemental  indenture
establishing the terms of the offered Debt Securities,  the terms of the offered
Debt  Securities  or the  covenants  contained  in the  Indenture  do not afford
holders  protection  in  the  event  of a  highly  leveraged  or  other  similar
transaction involving the Company that may adversely affect securityholders.

SUBORDINATION OF SENIOR SUBORDINATED DEBT SECURITIES AND SUBORDINATED DEBT
SECURITIES


    The term  "Senior  Indebtedness",  when used with  respect  to any series of
Senior  Subordinated  Debt  Securities,  means  indebtedness  of the Company and
indebtedness guaranteed by the Company for principal of and premium and interest
on  (a)  money  borrowed  from  banks  or  other  lending  institutions  whether
outstanding on the date of the initial issuance of any Senior  Subordinated Debt
Securities or thereafter  incurred and (b) any other  indebtedness or obligation
of the Company,  whether  outstanding on the date of the initial issuance of any
Senior Subordinated Debt Securities or thereafter created,  incurred, assumed or
guaranteed, which is evidenced by a note or other similar instrument,  including
Senior Debt Securities,  unless by the terms of such note or other instrument it
is provided  that such  indebtedness  is not superior in right of payment to the
Senior Subordinated Debt Securities; provided, however, that Senior Indebtedness
shall not include (w) any other series of Senior  Subordinated  Debt Securities,
including the Company's 12% Senior  Subordinated Notes due 2001 or the Company's
11 1/2 % Senior  Subordinated Notes due 2002, (x) any trade payables or notes or
other instruments  evidencing the same, (y) notes or other obligations issued in
lieu of cash  dividends  on,  or in  exchange  for,  Capital  Stock,  or (z) any
liability for federal, state, local or other taxes owed or owing by the Company.

    The term  "Senior  Indebtedness",  when used with  respect  to any series of
Subordinated Debt Securities, means indebtedness of the Company and indebtedness
guaranteed by the Company for principal of and premium and interest on (a) money
borrowed from banks or other lending  institutions  whether  outstanding  on the
date of the initial issuance of any  Subordinated  Debt Securities or thereafter
incurred and (b) any other  indebtedness  or obligation of the Company,  whether
outstanding  on the  date  of the  initial  issuance  of any  Subordinated  Debt
Securities or thereafter  created,  incurred,  assumed or  guaranteed,  which is
evidenced  by  a  note  or  other  similar  instrument,  including  Senior  Debt
Securities and Senior Subordinated Debt Securities  (including the Company's 12%
Senior   Subordinated  Notes  due  2001  and  the  Company's  11  1/2  %  Senior
Subordinated  Notes  due  2002),  unless  by the  terms  of such  note or  other
instrument  it is provided  that such  indebtedness  is not superior in right of
payment to the Subordinated  Debt  Securities;  provided,  however,  that Senior
Indebtedness  shall not  include  (w) any  other  series  of  Subordinated  Debt
Securities,  (x) any trade payables or notes or other instruments evidencing the
same, (y) notes or other obligations  issued in lieu of cash dividends on, or in
exchange for, Capital Stock, or (z) any liability for federal,  state,  local or
other taxes owed or owing by the Company.

                                9


<PAGE>
    In either case, the term "Senior Indebtedness" includes, without limitation,
(i) any and all interest  accruing on any of the Senior  Indebtedness  after the
commencement  of any  bankruptcy,  insolvency,  reorganization  or other similar
proceeding,  notwithstanding  any provision or rule of law which might  restrict
the  rights of any  holder  thereof  as to such  interest,  and (ii) any and all
claims for  principal  of,  premium and  interest  on, and fees and  expenses in
respect of, Senior Indebtedness  described in clause (a) above,  notwithstanding
any disallowance, avoidance or subordination of such claim under any insolvency,
fraudulent conveyance or equitable subordination law.

    Payment of the principal amount of and premium,  if any, and interest on the
Senior   Subordinated   Debt  Securities  and   Subordinated   Debt  Securities,
respectively,  will be  subordinated in right of payment to the prior payment in
full of all Senior Indebtedness with respect thereto on the terms and conditions
of the respective  Indentures governing such Senior Subordinated Debt Securities
and Subordinated Debt Securities,  respectively.  The Company is prohibited from
making any payment of principal of or premium or interest on Senior Subordinated
Debt Securities or  Subordinated  Debt  Securities,  as the case may be, and any
payment in respect of any redemption,  retirement, purchase or other acquisition
of Senior  Subordinated Debt Securities or Subordinated Debt Securities,  as the
case may be, (i) unless,  as of the earlier to occur of the date such payment is
made and the date that provision is made for such payment in accordance with the
terms  of the  applicable  Indenture,  all  amounts  then  due and  payable  for
principal of and  premium,  if any,  and  interest on Senior  Indebtedness  with
respect  to  the  Senior  Subordinated  Debt  Securities  or  Subordinated  Debt
Securities,  as the  case may be,  have  been  paid in  full,  or (ii) if at the
earlier to occur of the date of such  payment or provision  therefor,  there has
occurred  any  event of  default  under the  terms of such  Senior  Indebtedness
entitling  the holder of such Senior  Indebtedness  to  accelerate  the maturity
thereof as a result of such event of default.  Notwithstanding such prohibition,
the  Company  may make such  payments,  if (a) the  Company or the  Trustee  has
received  a notice  of a default  or an event of  default  under  any  agreement
covering  such Senior  Indebtedness  (other than notice of a default or event of
default relating to payments of principal or interest,  either at maturity, upon
redemption,  by  declaration  or  otherwise),  which default or event of default
would permit the holders of such Senior  Indebtedness to accelerate its maturity
(whether or not such  acceleration  has occurred),  and (b) 179 days have passed
after the  earliest  date on which such  notice  was given with  respect to such
default  or  event of  default  (a  "Payment  Blockage  Period")  so long as the
applicable Indenture otherwise permits payment at that time; provided,  however,
that only one Payment Blockage Period may be commenced within one 360-day period
with respect to the Senior  Subordinated  Debt Securities or  Subordinated  Debt
Securities,  as the  case  may be.  No event of  default  which  existed  or was
continuing on the date of the  commencement of any Payment  Blockage Period with
respect  to the  Senior  Indebtedness  shall be,  or be made,  the basis for the
commencement of a second Payment Blockage Period by the  representative  for the
holders of such Senior Indebtedness unless such event of default shall have been
cured or  waived  for a period of not less than 90  consecutive  days.  (Article
Fifteen of Senior Subordinated Indenture and Subordinated Indenture)

    Upon any payment or  distribution  of assets or securities of the Company of
any kind or character upon any dissolution,  winding up or total  liquidation or
reorganization  of the  Company (in  bankruptcy  or  otherwise),  the holders of
Senior  Indebtedness with respect to the Senior  Subordinated Debt Securities or
Subordinated  Debt  Securities,  as the case may be,  will first be  entitled to
receive  payment in full of principal  of and  premium,  if any, and interest on
such  Senior  Indebtedness  before  the  holders  of  Senior  Subordinated  Debt
Securities or Subordinated Debt Securities,  as the case may be, are entitled to
receive  any payment of the  principal  of or premium or interest on such Senior
Subordinated  Debt Securities or Subordinated  Debt Securities,  as the case may
be.  (Article  Fifteen  of  Senior   Subordinated   Indenture  and  Subordinated
Indenture)

    By reason of such provisions, in the event of insolvency,  holders of Senior
Subordinated  Debt Securities and Subordinated Debt Securities may recover less,
ratably, than holders of Senior Indebtedness with respect thereto.

    The Senior  Debt  Securities,  when  issued,  will rank on a parity with all
other unsecured and unsubordinated indebtedness of the Company.

                               10

<PAGE>
CONVERSION OR EXCHANGE OF DEBT SECURITIES

    If so indicated in the applicable  Prospectus  Supplement  with respect to a
particular  series  of Debt  Securities,  such  series  will be  convertible  or
exchangeable  into Common Stock or other  securities on the terms and conditions
set forth therein.

FORM, EXCHANGE, REGISTRATION, CONVERSION, TRANSFER AND PAYMENT

    Unless otherwise indicated in the applicable Prospectus Supplement, the Debt
Securities  will be issued only in fully  registered  form in  denominations  of
$1,000 or integral multiples thereof.  (Section 302) Unless otherwise  indicated
in the applicable  Prospectus  Supplement,  payment of principal of, premium, if
any,  and interest on the Debt  Securities  will be payable,  and the  exchange,
conversion and transfer of Debt Securities will be  registerable,  at the office
or agency of the Company maintained for such purposes and at any other office or
agency  maintained  for such  purpose.  (Sections  301, 305 and 1002) No service
charge  will be made for any  registration  of  transfer or exchange of the Debt
Securities, but the Company may require payment of a sum sufficient to cover any
tax or other governmental charge imposed in connection therewith. (Section 305)

    All  monies  paid by the  Company  to a  paying  agent  for the  payment  of
principal  of and any  premium or  interest on any Debt  Security  which  remain
unclaimed for two years after such principal, premium or interest has become due
and payable may be repaid to the Company and  thereafter the holder of such Debt
Security may look only to the Company for payment thereof. (Section 1003)

GLOBAL SECURITIES

    The Debt  Securities  of a series  may be  issued in whole or in part in the
form of one or more Global  Securities that will be deposited with, or on behalf
of,  a  Depositary  ("Global  Depositary")  or  its  nominee  identified  in the
applicable Prospectus Supplement.  In such a case, one or more Global Securities
will be issued in a denomination or aggregate  denomination equal to the portion
of the aggregate  principal  amount of outstanding Debt Securities of the series
to be represented by such Global Security or Securities.  Unless and until it is
exchanged in whole or in part for Debt  Securities in registered  form, a Global
Security may not be registered for transfer or exchange except as a whole by the
Global  Depositary  for  such  Global  Security  to a  nominee  of  such  Global
Depositary or by a nominee of such Global  Depositary to such Global  Depositary
or another nominee of such Global Depositary or by such Global Depositary or any
nominee to a successor  Global  Depositary or a nominee of such successor Global
Depositary  and  except  in  the  circumstances   described  in  the  applicable
Prospectus Supplement. (Sections 204 and 305)

    The specific terms of the depositary arrangement with respect to any portion
of a series of Debt  Securities to be represented  by a Global  Security will be
described in the applicable Prospectus Supplement.  The Company expects that the
following provisions will apply to depositary arrangements.

    Unless otherwise  specified in the applicable  Prospectus  Supplement,  Debt
Securities which are to be represented by a Global Security to be deposited with
or on behalf of a Global  Depositary  will be represented  by a Global  Security
registered  in the  name of such  Global  Depositary  or its  nominee.  Upon the
issuance of such Global  Security,  and the deposit of such Global Security with
or on behalf of the  Global  Depositary  for such  Global  Security,  the Global
Depositary will credit, on its book-entry  registration and transfer system, the
respective  principal amounts of the Debt Securities  represented by such Global
Security to the accounts of  institutions  that have  accounts  with such Global
Depositary or its nominee ("participants").  The accounts to be credited will be
designated  by the  underwriters  or agents of such  Debt  Securities  or by the
Company,  if such Debt  Securities are offered and sold directly by the Company.
Ownership  of  beneficial  interest in such Global  Security  will be limited to
participants or Persons that may hold interests through participants.  Ownership
of beneficial  interests by  participants  in such Global Security will be shown
on, and the transfer of that  ownership  interest will be effected only through,
records  maintained  by the Global  Depositary  or its  nominee  for such Global
Security.  Ownership of beneficial  interests in such Global Security by Persons
that hold  through  participants  will be shown  on,  and the  transfer  of that
ownership  interest  within  such  participant  will be effected  only  through,
records

                               11

<PAGE>
maintained  by such  participant.  The laws of some  jurisdictions  require that
certain  purchasers of securities  take physical  delivery of such securities in
certificated  form.  The  foregoing  limitations  and such laws may  impair  the
ability to transfer beneficial interests in such Global Securities.

    So long as the Global Depositary for a Global Security,  or its nominee,  is
the registered  owner of such Global  Security,  such Global  Depositary or such
nominee,  as the case may be, will be considered the sole owner or holder of the
Securities  represented  by such  Global  Security  for all  purposes  under the
applicable  Indenture.  Unless otherwise specified in the applicable  Prospectus
Supplement,  owners of beneficial  interests in such Global Security will not be
entitled  to have Debt  Securities  of the  series  represented  by such  Global
Security  registered in their names,  will not receive or be entitled to receive
physical  delivery of Debt  Securities of such series in  certificated  form and
will not be considered the holders thereof for any purposes under the applicable
Indenture.  (Sections 204 and 305) Accordingly,  each Person owning a beneficial
interest  in such  Global  Security  must rely on the  procedures  of the Global
Depositary  and, if such Person is not a  participant,  on the procedures of the
participant through which such Person owns its interest,  to exercise any rights
of a holder under the applicable  Indenture.  The Company understands that under
existing industry practices, if the Company requests any action of holders or an
owner of a  beneficial  interest  in such  Global  Security  desires to give any
notice  or take  any  action  a  holder  is  entitled  to give or take  under an
Indenture,  the Global  Depositary would authorize the participants to give such
notice or take such action, and participants  would authorize  beneficial owners
owning  through  such  participants  to give such  notice or take such action or
would otherwise act upon the  instructions  of beneficial  owners owning through
them.

    Principal  of and any premium  and  interest  on a Global  Security  will be
payable in the manner described in the applicable Prospectus Supplement.

COVENANTS WITH RESPECT TO SENIOR DEBT SECURITIES

    If so indicated in the applicable  Prospectus  Supplement  with respect to a
particular  series  of Senior  Debt  Securities,  holders  of such  Senior  Debt
Securities  will be  entitled  to the  benefit  of one or both of the  following
covenants. 

Restrictions on Secured Debt

    Neither  the  Company  nor any  Subsidiary  shall  incur,  issue,  assume or
guarantee any notes,  bonds,  debentures or other evidences of indebtedness  for
money  borrowed  (collectively,  "Debt")  secured  after the date of the  Senior
Indenture by a mortgage,  pledge or lien ("Mortgage") on any Principal  Property
of the Company or a Significant  Subsidiary or on any shares of stock or Debt of
any  Significant  Subsidiary,   unless  the  Company  secures,  or  causes  such
Significant Subsidiary to secure, the Senior Debt Securities equally and ratably
with (or, at the Company's option, prior to) such secured Debt, together, at the
determination of the Company, with certain other Debt of the Company;  provided,
however,  that such restriction shall not apply to the incurrence of any secured
Debt if, after giving effect thereto, the aggregate outstanding principal amount
of all such Debt so  secured  after the date of the Senior  Indenture,  together
with all  Attributable  Debt of the Company and its Significant  Subsidiaries in
respect  of sale  and  leaseback  transactions  after  the  date  of the  Senior
Indenture and existing at such time involving Principal  Properties owned by the
Company or a Significant  Subsidiary  (with the  exception of such  transactions
which are  excluded  as  described  in  "Restrictions  on Sales and  Leasebacks"
below),  would not exceed 10% of the Consolidated  Assets of the Company and its
Subsidiaries.

    This restriction will not apply to, and there shall be excluded in computing
secured Debt for the purpose of such restriction, Debt secured prior to the date
of the Senior  Indenture and Debt secured by (a) Mortgages on property of, or on
any shares of stock of or Debt of,  any  corporation  existing  at the time such
corporation  becomes a  Significant  Subsidiary;  (b)  Mortgages in favor of the
Company or a  Significant  Subsidiary;  (c)  Mortgages in favor of  governmental
bodies to secure  progress,  advance or other  statutory  or contract  payments;
Mortgages for taxes,  assessments or other  governmental  charges or levies;  or
materialmen's  mechanics',  carriers',  workmen's,  repairmen's,  landlord's and
other like Mortgages; (d) Mortgages on property, equipment, mines or facilities,
or shares  of stock or Debt,  to secure  the  payment  of all or any part of the
purchase price thereof or the  construction,  improvement  or  development  cost
thereof, or any Debt incurred in connection therewith, existing prior to, at the
time of, or

                               12

<PAGE>
within 180 days after, the acquisition (including any acquisition through merger
or consolidation) or construction,  improvement or development thereof, provided
that any such Mortgage  shall only extend to the property,  equipment,  mines or
facilities,  or shares of stock or Debt,  acquired or  constructed,  improved or
developed,  or to property or mines, including undeveloped  mineralized deposits
or orebodies or segments thereof, on which the acquired or constructed, improved
or developed property, equipment, mines or facilities is situated; (e) Mortgages
securing certain tax-exempt obligations issued by governmental bodies, including
industrial  revenue  or  pollution  control  bonds;  (f)  Mortgages  created  in
connection with a project  financed,  or assets  acquired,  with, and created to
secure,  a Nonrecourse  Obligation;  (g) production  payments or other rights of
others to the output of mines, refineries, smelters, concentrators or production
facilities,  including project financings with respect to any property or assets
acquired,  constructed  or  improved  by the  Company or a  Subsidiary  with the
proceeds  of such  project  financings;  or  Mortgages  to secure the payment of
workmen's  compensation or the performance of tenders, bids or similar contracts
(including  surety or appeal bonds) and  Mortgages  entered into in the ordinary
course of business for similar purposes;  or (h) subject to certain limitations,
any extension, renewal or refunding of any Mortgage referred to in the foregoing
clauses (a) through (g) inclusive. (Section 1006 of Senior Indenture) The Senior
Indenture  does not  restrict  the  Company  or any  Subsidiary  from  incurring
unsecured Debt. 

Restrictions on Sales and Leasebacks

    Neither the Company nor any  Significant  Subsidiary may enter into any sale
and leaseback transaction involving any Principal Property,  unless after giving
effect thereto the aggregate amount of all Attributable Debt with respect to all
such transactions  occurring after the date of the Senior Indenture and existing
at such time plus all  outstanding  secured Debt incurred by the Company and its
Significant  Subsidiaries  after  the date of the  Senior  Indenture  (with  the
exception of secured Debt which is excluded as  described  in  "Restrictions  on
Secured Debt" above) would not exceed 10% of Consolidated  Assets of the Company
and its Subsidiaries.

    This  restriction  does not  apply  to,  and there  shall be  excluded  from
Attributable  Debt in any  computation  under  such  restriction,  any  sale and
leaseback  transaction  if (a) the  lease  is for a  period,  including  renewal
rights,  not in excess of three years; (b) the sale or transfer of the Principal
Property  is made  prior  to,  at the time of,  or  within  180 days  after  its
acquisition or completion of  construction;  (c) the lease secures or relates to
certain  tax-exempt   obligations  issued  by  governmental  bodies,   including
industrial  revenue or pollution  control bonds;  (d) the transaction is between
the Company and a Significant  Subsidiary or between  Significant  Subsidiaries;
(e) the  lease  payment  obligation  is  created  in  connection  with a project
financed,  or  assets  acquired,  with,  and  such  obligation  constitutes,   a
Nonrecourse  Obligation;  or (f) the  Company  or such  Significant  Subsidiary,
within 180 days after the sale is completed, applies to the retirement of Funded
Debt of the Company or a  Significant  Subsidiary,  or to the  purchase of other
property which will constitute  Principal Property,  an amount not less than the
greater of (i) the net proceeds of the sale of the Principal  Property leased or
(ii) the fair market value of the Principal  Property  leased,  as determined by
certain  officers of the Company.  The amount to be applied to the retirement of
Funded  Debt  shall be reduced by (x) the  principal  amount of any Funded  Debt
(including  the Debt  Securities)  of the  Company or a  Significant  Subsidiary
retired and cancelled  within 180 days after such sale with proceeds  other than
the proceeds from such sale and (y) the principal  amount of Funded Debt,  other
than any Funded  Debt  referred  to in the  preceding  clause  (x),  voluntarily
retired by the Company or any Significant  Subsidiary within 180 days after such
sale using  proceeds  other than the  proceeds  of such sale.  (Section  1007 of
Senior Indenture)

COVENANTS WITH RESPECT TO SENIOR SUBORDINATED DEBT SECURITIES

    If so indicated in the applicable  Prospectus  Supplement  with respect to a
particular series of Senior Subordinated Debt Securities, holders of such Senior
Subordinated  Debt  Securities will be entitled to the benefit of one or both of
the following covenants.

                               13

<PAGE>
Limitation on Subordinated Liens

    Neither  the  Company  nor any  Subsidiary  shall  incur,  issue,  assume or
guarantee  any  Debt  which  is pari  passu or (by the  express  terms  thereof)
subordinate  in right of  payment to the Senior  Subordinated  Debt  Securities,
secured after the date of the Senior Subordinated Indenture by a Mortgage on any
Principal  Property of the Company or a Significant  Subsidiary or on any shares
of stock or Debt of any Significant  Subsidiary,  unless the Company secures, or
causes such  Significant  Subsidiary  to secure,  the Senior  Subordinated  Debt
Securities (i) equally and ratably with (or, at the Company's option,  prior to)
such  secured Debt or (ii) in the event such  secured  Debt is  subordinated  in
right to payment to the Senior  Subordinated  Securities,  prior to such secured
Debt, together,  at the determination of the Company, with certain other Debt of
the Company;  provided,  however,  that such restriction  shall not apply to the
incurrence  of any secured Debt if, after giving effect  thereto,  the aggregate
amount of all such Debt so  secured  after the date of the  Senior  Subordinated
Indenture and then outstanding  would not exceed 10% of the Consolidated  Assets
of the Company and its Subsidiaries.

    This restriction will not apply to, and there shall be excluded in computing
secured Debt for the purpose of such restriction, Debt secured prior to the date
of the  Senior  Subordinated  Indenture  and Debt  secured by (a)  Mortgages  on
property of, or on any shares of stock of or Debt of, any  corporation  existing
at the time such corporation becomes a Significant Subsidiary;  (b) Mortgages in
favor of the Company or a  Significant  Subsidiary;  (c)  Mortgages  in favor of
governmental  bodies to secure progress,  advance or other statutory or contract
payments;  Mortgages for taxes,  assessments  or other  governmental  changes or
levies;  or  materialmen's  mechanics',   carriers',   workmen's,   repairmen's,
landlord's and other like Mortgages; (d) Mortgages on property, equipment, mines
or  facilities,  or shares of stock or Debt, to secure the payment of all or any
part  of  the  purchase  price  thereof  or  the  construction,  improvement  or
development cost thereof, or any Debt incurred in connection therewith, existing
prior to, at the time of, or within 180 days after,  the acquisition  (including
any acquisition through merger or consolidation) or construction, improvement or
development  thereof,  provided that any such Mortgage  shall only extend to the
property,  equipment,  mines or facilities, or shares of stock or Debt, acquired
or  constructed,  improved or  developed,  or to  property  or mines,  including
undeveloped  mineralized deposits or orebodies or segments thereof, on which the
acquired or constructed,  improved or developed  property,  equipment,  mines or
facilities is situated;  (e) Mortgages securing certain  tax-exempt  obligations
issued by governmental bodies, including industrial revenue or pollution control
bonds; (f) Mortgages  created in connection with a project  financed,  or assets
acquired, with, and created to secure, a Nonrecourse Obligation;  (g) production
payments or other rights of others to the output of mines, refineries, smelters,
concentrators  or production  facilities,  including  project  financings,  with
respect to any  property  or assets  acquired,  constructed  or  improved by the
Company  or a  Subsidiary  with the  proceeds  of such  project  financings;  or
Mortgages to secure the payment of workmen's  compensation or the performance of
tenders,  bids or  similar  contracts  (including  surety or appeal  bonds)  and
Mortgages  entered into in the ordinary course of business for similar purposes;
or (h) subject to certain  limitations,  any extension,  renewal or refunding of
any Mortgage  referred to in the  foregoing  clauses (a) through (g)  inclusive.
(Section  1006  of  Senior  Subordinated   Indenture)  The  Senior  Subordinated
Indenture  does not  restrict  the  Company  or any  Subsidiary  from  incurring
unsecured Debt. Limitation on Certain Debt

    The  Company  shall  not  incur  any  Debt  which  by its  terms is both (i)
subordinated  in right of payment to any Senior Debt and (ii) senior in right of
payment to the Senior Subordinated Debt Securities.

EVENTS OF DEFAULT

    The  following are Events of Default  under the  Indentures  with respect to
Debt  Securities of any series:  (a) failure to pay principal of or premium,  if
any,  on any Debt  Security  of that  series  when due;  (b)  failure to pay any
interest on any Debt  Security of that series when due,  continued  for 30 days;
(c) failure to make any sinking fund  payment,  when due, in respect of any Debt
Security  of that  series;  (d) failure to perform in any  material  respect any
other covenant of the Company in the applicable Indenture (other than a covenant
included in such Indenture solely for the benefit of a series of Debt Securities
other than that series),  continued for 60 days after written notice as provided
in the respective Indentures; (e)

                               14

<PAGE>
acceleration of any  indebtedness for money borrowed by the Company in excess of
$20 million,  if such acceleration is not annulled as provided in the respective
Indentures; (f) certain events of bankruptcy, insolvency or reorganization;  and
(g) any other Event of Default  provided with respect to Debt Securities of that
series. (Section 501)

    If an Event of Default with respect to  outstanding  Debt  Securities of any
series  shall occur and be  continuing,  either the Trustee or the holders of at
least 25% in principal  amount of the outstanding Debt Securities of that series
by notice as provided in the  respective  Indentures  may declare the  principal
amount (or, if the Debt  Securities of that series are Original  Issue  Discount
Securities,  such  portion of the  principal  amount as may be  specified in the
terms  of that  series)  of all Debt  Securities  of that  series  to be due and
payable  immediately.  However,  at any time after a declaration of acceleration
with  respect to Debt  Securities  of any  series  has been  made,  but before a
judgment or decree based on such acceleration has been obtained,  the holders of
a majority in principal amount of the outstanding Debt Securities of that series
may, under certain circumstances,  rescind and annul such acceleration. (Section
502) For  information as to waiver of defaults,  see  "Modification  and Waiver"
below.

    The Indentures provide that, subject to the duty of the respective  Trustees
thereunder during an Event of Default to act with the required standard of care,
such Trustee will be under no obligation to exercise any of its rights or powers
under the  respective  Indentures  at the  request  or  direction  of any of the
holders,  unless such  holders  shall have  offered to such  Trustee  reasonable
security or  indemnity.  (Sections  601 and 603) Subject to certain  provisions,
including  those  requiring  security or  indemnification  of the Trustees,  the
holders of a majority in principal  amount of the outstanding Debt Securities of
any  series  will  have the  right to  direct  the  time,  method  and  place of
conducting any proceeding for any remedy available to the applicable Trustee, or
exercising  any trust or power  conferred on such  Trustee,  with respect to the
Debt Securities of that series. (Section 512)

    No holder of a Debt  Security of any series will have any right to institute
any  proceeding  with  respect  to the  applicable  Indenture  or for any remedy
thereunder,  unless such holder shall have  previously  given to the  applicable
Trustee written notice of a continuing  Event of Default (as defined) and unless
also  the  holders  of at  least  25%  in  aggregate  principal  amount  of  the
outstanding  Debt Securities of the same series shall have made written request,
and offered reasonable indemnity, to the Trustee to institute such proceeding as
trustee,  and the Trustee shall not have received from the holders of a majority
in aggregate  principal  amount of the  outstanding  Debt Securities of the same
series a  direction  inconsistent  with such  request  and shall have  failed to
institute  such  proceeding  within  60  days.   (Section  507)  However,   such
limitations do not apply to a suit instituted by a holder of a Debt Security for
enforcement of payment of the principal of and interest on such Debt Security on
or after the respective due dates expressed in such Debt Security. (Section 508)

    The Company will be required to furnish to the Trustees annually a statement
as to the  performance  by the Company of its  obligations  under the respective
Indentures and as to any default in such performance. (Section 1004)

MODIFICATION AND WAIVER

    Without  the  consent  of any holder of  outstanding  Debt  Securities,  the
Company and the  Trustee  may amend or  supplement  the  Indentures  or the Debt
Securities to cure any ambiguity, defect or inconsistency, or to make any change
that does not  materially  adversely  affect  the  rights of any  holder of Debt
Securities.  (Section 901) Other  modifications and amendments of the respective
Indentures  may be made by the Company  and the Trustee  with the consent of the
holders  of not less  than a  majority  in  aggregate  principal  amount  of the
outstanding Debt Securities of each series affected thereby; provided,  however,
that no such modification or amendment may, without the consent of the holder of
each outstanding Debt Security affected thereby:  (a) change the Stated Maturity
of the  principal  of, or any  installment  of principal of, or interest on, any
Debt Security;  (b) reduce the principal  amount of, the rate of interest on, or
the premium,  if any,  payable upon the redemption  of, any Debt  Security;  (c)
reduce the amount of principal of an Original  Issue Discount  Security  payable
upon acceleration of the Maturity  thereof;  (d) change the place or currency of
payment of principal of, or premium, if any, or interest on any

                               15

<PAGE>
Debt Security; (e) impair the right to institute suit for the enforcement of any
payment on or with respect to any Debt Security on or after the Stated  Maturity
or Redemption Date thereof; (f) modify the conversion  provisions  applicable to
Convertible  Debt  Securities in a manner  adverse to the holders  thereof;  (g)
modify the  subordination  provisions  applicable  to Senior  Subordinated  Debt
Securities or  Subordinated  Debt  Securities in a manner adverse to the holders
thereof;  or (h) reduce the percentage in principal  amount of outstanding  Debt
Securities  of any series,  the consent of the holders of which is required  for
modification  or  amendment  of  the  applicable  Indenture  or  for  waiver  of
compliance with certain provisions of the applicable  Indenture or for waiver of
certain defaults. (Section 902)

    The  holders of at least a majority  in  aggregate  principal  amount of the
outstanding  Debt  Securities  of any series may on behalf of the holders of all
Debt  Securities  of that series  waive,  insofar as that  series is  concerned,
compliance by the Company with certain  covenants of the  applicable  Indenture.
(Section  1009) The holders of not less than a majority in  principal  amount of
the  outstanding  Debt Securities of any series may, on behalf of the holders of
all Debt Securities of that series,  waive any past default under the applicable
Indenture  with respect to that  series,  except a default in the payment of the
principal  of, or premium,  if any, or  interest  on, any Debt  Security of that
series or in respect of a provision which under the applicable  Indenture cannot
be  modified or amended  without  the consent of the holder of each  outstanding
Debt Security of that series affected. (Section 513)

CONSOLIDATION, MERGER AND SALE OF ASSETS

    The Company may not  consolidate or merge with or into, or transfer or lease
all or substantially all of its assets to, any Person,  and any other Person may
not consolidate or merge with or into, the Company, unless (i) the Person formed
by such  consolidation  or into which the Company is merged or which acquires or
leases all or substantially  all of the assets of the Company  expressly assumes
all of the Company's obligations on the Debt Securities and under the Indenture,
(ii)  immediately  after giving effect to such  transaction  no Event of Default
shall have happened and be  continuing,  and (iii) certain other  conditions are
met. (Article Eight)

DEFEASANCE

    If so indicated in the applicable  Prospectus Supplement with respect to the
Debt Securities of a series,  the Company,  at its option (i) will be discharged
from any and all  obligations  in respect of the Debt  Securities of such series
(except for certain  obligations  to register  the  transfer or exchange of Debt
Securities of such series, to replace destroyed,  stolen, lost or mutilated Debt
Securities of such series, and to maintain an office or agency in respect of the
Debt  Securities  and hold moneys for payment in trust) or (ii) will be released
from its  obligations  to comply with the  covenants  that are  specified  under
"Covenants with Respect to Senior Debt Securities" or "Covenants with Respect to
Senior  Subordinated Debt Securities" above (and any covenants that may apply to
Subordinated  Debt  Securities)  with  respect  to the Debt  Securities  of such
series,  and the occurrence of an event described in clause (d) under "Events of
Default"  above with respect to any defeased  covenant,  and clauses (e) and (g)
under  "Events of Default"  above  shall no longer be Events of  Default,  if in
either case the Company  irrevocably  deposits with the Trustee, in trust, money
or U.S. Government  Obligations that through the payment of interest thereon and
principal thereof in accordance with their terms will provide money in an amount
sufficient to pay all the principal of and premium,  if any, and any interest on
the Debt Securities of such series on the dates such payments are due (which may
include one or more  redemption  dates  designated by the Company) in accordance
with the terms of such Debt Securities. Such a trust may only be established if,
among  other  things,  (a) no Event of Default or event which with the giving of
notice or lapse of time,  or both,  would  become an Event of Default  under the
applicable  Indenture  shall have occurred and be continuing on the date of such
deposit,  (b) no Event of Default  described  under clause (f) under  "Events of
Default"  above or event  which with the  giving of notice or lapse of time,  or
both,  would  become an Event of Default  described  under such clause (f) shall
have occurred and be continuing at any time during the period ending on the 91st
day following such date of deposit,  and (c) the Company shall have delivered an
Opinion of Counsel to the effect  that the holders of the Debt  Securities  will
not recognize  gain or loss for United States  Federal  income tax purposes as a
result of such deposit or defeasance and

                               16

<PAGE>
will be subject to United  States  Federal  income tax in the same  manner as if
such defeasance had not occurred.  In the event the Company fails to comply with
its remaining  obligations under the applicable  Indenture after a defeasance of
such  Indenture  with respect to the Debt  Securities of any series as described
under clause (ii) above and the Debt  Securities of such series are declared due
and payable  because of the occurrence of any undefeased  Event of Default,  the
amount of money and U.S. Government  Obligations on deposit with the Trustee may
be  insufficient to pay amounts due on the Debt Securities of such series at the
time of the  acceleration  resulting  from such Event of Default.  However,  the
Company will remain liable in respect to such payments. (Article Thirteen)

    Notwithstanding  the  description set forth under  "Subordination  of Senior
Subordinated  Debt Securities and Subordinated  Debt  Securities"  above, in the
event  that  the  Company  deposits  money  or U.S.  Government  Obligations  in
compliance  with  the  Indenture  that  governs  the  Senior  Subordinated  Debt
Securities  or  Subordinated  Debt  Securities,  as the case may be, in order to
defease all or certain of its obligations with respect to the applicable  series
of Debt Securities,  the moneys or U.S. Government Obligations so deposited will
not be subject to the subordination  provisions of the applicable  Indenture and
the  indebtedness  evidenced  by such  series  of Debt  Securities  will  not be
subordinated   in  right  of  payment  to  the  holders  of  applicable   Senior
Indebtedness  to the  extent of the  moneys or U.S.  Government  Obligations  so
deposited.

PROVISION OF FINANCIAL INFORMATION

    The Company will provide to the Trustee a copy of all  financial  reports it
files with the Commission.  If, during any reporting period,  the Company is not
required to file such reports with the Commission,  the Company will provide the
Trustee substantially similar financial reports concerning the Company as if the
Company were so required.

GOVERNING LAW

    The Indentures and the Debt Securities will be governed by, and construed in
accordance with, the laws of the State of New York. (Section 112)

REGARDING THE TRUSTEE

    Chemical Trust Company of California,  an affiliate of Chemical Bank,  N.A.,
will serve as Trustee under the Indenture  governing the Senior Debt Securities.
Chemical Bank, N.A. is a lender and the administrative agent under the Company's
$200 million Revolving Credit Agreement.

    State Street Bank and Trust  Company will be the Trustee under the Indenture
governing the Senior Subordinated Debt Securities.  It is also the trustee under
the indentures  governing the Company's 12% Senior  Subordinated  Notes due 2001
and its 11 1/2 % Senior Subordinated Notes due 2002.

    The  Trustee  with  respect to the  Indenture  governing  Subordinated  Debt
Securities will be specified in the applicable  Prospectus  Supplement  relating
thereto.

    If any  Trustee  were to have any  conflicting  interest  at the time of any
default under the Debt  Securities,  it would have to eliminate such conflict or
resign as Trustee. (Section 608)

CERTAIN DEFINITIONS

    The  following  terms have the  meanings  ascribed to them below,  except as
otherwise provided with respect to any series of Debt Securities:

    The term  "Attributable  Debt" shall mean, as to any particular  Capitalized
Lease  under  which any Person is at the time  liable,  at any date of which the
amount thereof is to be determined,  the total net amount of rent required to be
paid by such Person under such  Capitalized  Lease during the remaining  primary
term thereof,  discounted  from the respective due dates thereof to such date at
the rate of interest per annum implicit in the terms of such Capitalized  Lease,
as determined  in good faith by the Company.  The net amount of rent required to
be paid under such Capitalized  Lease for any such period shall be the amount of
the rent  payable by the lessee with  respect to such  period,  after  excluding
amounts  required  to be paid on account  of  maintenance,  repairs,  insurance,
taxes, assessments, water rates and

                               17

<PAGE>
similar charges. In the case of any Capitalized Lease which is terminable by the
lessee upon the  payment of a penalty,  such net amount  shall also  include the
amount of such penalty, but shall not include any rent required to be paid under
such  Capitalized  Lease  subsequent  to the first  date upon which it may be so
terminated.

    The term  "Consolidated  Assets" shall mean the aggregate  amount of assets,
all as set  forth on the  most  recent  balance  sheet  of the  Company  and its
consolidated  Subsidiaries  and computed in accordance  with generally  accepted
accounting principles.

    The term "Funded Debt" shall mean all indebtedness for money borrowed having
a maturity of more than 12 months  from the date as of which the amount  thereof
is to be determined or having a maturity of less than 12 months but by its terms
being  renewable or extendable  beyond 12 months from such date at the option of
the borrower.

    The term  "Nonrecourse  Obligation" shall mean indebtedness or lease payment
obligations  substantially  related to and entered into or effective  before, at
the time of or after (i) the acquisition (including any acquisition by merger or
consolidation)  of property or assets not currently  owned by the Company or any
of its  Significant  Subsidiaries  or (ii)  the  financing  of the  acquisition,
construction,  development  or  improvement  of  property,  equipment,  mines or
facilities of the Company or any of its  Significant  Subsidiaries,  as to which
the obligee with respect to such  indebtedness  or obligation has no recourse to
the  general   corporate  funds  of  the  Company  or  any  of  its  Significant
Subsidiaries  or to  the  assets,  in  general,  of  the  Company  or any of its
Significant  Subsidiaries,   other  than  the  property,   equipment,  mines  or
facilities  acquired or  constructed,  improved or developed,  or to property or
mines,  including  undeveloped  mineralized  deposits or  orebodies  or segments
thereof,  on which the acquired or constructed,  improved or developed property,
equipment,  mines or  facilities  is situated or that forms,  with the property,
equipment,  mines or facilities acquired or constructed,  improved or developed,
an integrated plan to bring into or enhance the production of minerals or metals
therefrom.

    The term "Person" shall mean any individual, corporation, partnership, joint
venture,  trust,  association,  company,  joint-stock  company,  business trust,
unincorporated organization or government or any agency or political subdivision
thereof.

    The term "Principal  Property" shall mean any smelters,  refineries,  mines,
concentrators or other  facilities,  located within the present 50 states of the
United States of America (other than its territories or  possessions),  owned by
the  Company  or any  Subsidiary,  in each case the gross  book  value  (without
deduction  of any  depreciation  reserves)  of which on the date as of which the
determination  is being made exceeds 3% of Consolidated  Assets,  other than any
such portion  thereof which is pollution  control or other equipment or facility
financed by obligations  issued by a State or local government  unit;  provided,
however,  that Principal  Property  shall not include any smelters,  refineries,
mines,  concentrators  or facilities or any portions  thereof which the Board of
Directors of the Company  declares by resolution are not of material  importance
to the total  business  conducted  by the  Company  and its  Subsidiaries  as an
entirety.

    The term  "Significant  Subsidiary" shall mean any Subsidiary of the Company
which  owns a  Principal  Property  and any  Subsidiary  that owns  directly  or
indirectly stock of a Significant Subsidiary.

    The  term  "Subsidiary"  shall  mean  a  corporation  more  than  50% of the
outstanding  Voting  Stock of which is owned,  directly  or  indirectly,  by the
Company or by one or more other Subsidiaries,  or by the Company and one or more
other Subsidiaries.

    The term "Voting  Stock" shall mean stock which  ordinarily has voting power
for the election of directors, whether at all times or only so long as no senior
class of stock has such voting power by reason of any contingency.

                               18

<PAGE>
                        DESCRIPTION OF PREFERRED STOCK

    The following is a description  of certain  general terms and  provisions of
the Preferred  Stock. The particular terms of any series of Preferred Stock will
be  described  in the  applicable  Prospectus  Supplement.  If so indicated in a
Prospectus  Supplement,  the terms of any such  series may differ from the terms
set forth below.  Certain  provisions  applicable to the Preferred Stock are set
forth below under "Description of Common Stock."

    The summary of terms of the  Company's  Preferred  Stock  contained  in this
Prospectus  does not purport to be complete and is subject to, and  qualified in
its entirety by, the provisions of the Company's  Certificate  of  Incorporation
and the  certificate  of  designations  relating to each series of the Preferred
Stock (the  "Certificate of  Designations"),  the form of which is an exhibit to
the Registration Statement of which this Prospectus is a part.

    The  Company's  Certificate  of  Incorporation  authorizes  the  issuance of
50,000,000  shares of preferred  stock. In December 1993, the Company closed the
sale of 2.0 million shares of 6% Cumulative  Convertible Preferred Stock, Series
E, $.01 par value. See "Series E Preferred Stock" below.  Additionally,  in July
1993, the Company  issued 2.0 million  shares of 5 5/8 % Cumulative  Convertible
Preferred Stock, Series D, $.01 par value. See "Series D Preferred Stock" below.
The Company also has 5,112,765  shares of Series C Convertible  Preferred Stock,
$.01 par value,  reserved for issuance in certain  instances.  See "Reserved but
Unissued Series C Convertible  Preferred Stock" below.  The Company's  preferred
stock may be issued from time to time in one or more series, without stockholder
approval.  Subject to  limitations  prescribed by law, the Board of Directors is
authorized to determine the voting powers (if any), designation, preferences and
relative,  participating,  optional or other special rights, and qualifications,
limitations or restrictions thereof, for each series of preferred stock that may
be issued, and to fix the number of shares of each such series.  Thus, the Board
of Directors,  without  stockholder  approval,  could  authorize the issuance of
preferred  stock with voting,  conversion and other rights that could  adversely
affect the  voting  power and other  rights of holders of Common  Stock or other
series of preferred  stock or that could have the effect of delaying,  deferring
or  preventing a change in control of the Company.  See  "Description  of Common
Stock" herein.

    The Preferred  Stock shall have the dividend,  liquidation,  redemption  and
voting  rights  set  forth  below  unless  otherwise  provided  in a  Prospectus
Supplement  relating  to  a  particular  series  of  the  Preferred  Stock.  The
applicable Prospectus Supplement will describe the following terms of the series
of Preferred Stock in respect of which this Prospectus is being  delivered:  (1)
the  designation  and  stated  value per share of such  Preferred  Stock and the
number of shares  offered;  (2) the amount of liquidation  preference per share;
(3) the initial  public  offering  price at which such  Preferred  Stock will be
issued and any  exchange  upon which the stock will be listed;  (4) the dividend
rate (or method of  calculation),  the dates on which dividends shall be payable
and the dates from which dividends  shall commence to cumulate,  if any; (5) any
redemption or sinking fund  provisions;  (6) any conversion or exchange  rights;
(7) whether the Company  has  elected to offer  Depositary  Shares as  described
below under "Description of Depositary  Shares";  and (8) any additional voting,
dividend,  liquidation,  redemption, sinking fund and other rights, preferences,
privileges, limitations and restrictions.

GENERAL

    The Preferred Stock offered hereby will be issued in one or more series. The
holders of Preferred Stock will have no preemptive rights. Preferred Stock, upon
issuance against full payment of the purchase price therefor, will be fully paid
and  nonassessable.  Neither  the par value nor the  liquidation  preference  is
indicative of the price at which the Preferred  Stock will actually  trade on or
after the date of issuance.

    As described under "Description of Depositary  Shares",  the Company may, at
its option,  elect to offer Depositary Shares evidenced by Depositary  Receipts,
each  representing  a fractional  interest  (to be  specified in the  Prospectus
Supplement  relating to the particular series of the Preferred Stock) in a share
of the  particular  series of the Preferred  Stock issued and  deposited  with a
Depositary (as defined below).

                               19

<PAGE>
RANK

    The  Preferred  Stock shall,  with respect to dividend  rights and rights on
liquidation,  winding  up and  dissolution  of the  Company,  rank  prior to the
Company's Common Stock and to all other classes and series of equity  securities
of the Company now or hereafter  authorized,  issued or outstanding  (the Common
Stock and such other classes and series of equity securities collectively may be
referred to herein as the "Junior  Stock"),  other than any classes or series of
equity  securities of the Company  ranking on a parity with (the "Parity Stock")
or senior to (the "Senior  Stock") the Preferred Stock as to dividend rights and
rights upon liquidation, winding up or dissolution of the Company. The Preferred
Stock shall be junior to all  outstanding  debt of the  Company.  The  Preferred
Stock  shall be subject to  creation of Senior  Stock,  Parity  Stock and Junior
Stock to the extent not expressly  prohibited by the  Company's  Certificate  of
Incorporation.

DIVIDENDS

    Holders of shares of Preferred Stock shall be entitled to receive,  when, as
and if declared by the Board of  Directors  out of funds of the Company  legally
available for payment,  cash dividends,  payable at such dates and at such rates
per share per annum as set forth in the applicable Prospectus  Supplement.  Such
rate may be fixed or variable or both.  Each declared  dividend shall be payable
to holders of record as they  appear at the close of business on the stock books
of the Company (or, if  applicable,  on the records of the  Depositary)  on such
record  dates,  not more than 60  calendar  days  preceding  the  payment  dates
therefor,  as are  determined by the Board of Directors  (each of such dates,  a
"Record Date").

    Such  dividends  may be  cumulative  or  noncumulative,  as  provided in the
Prospectus  Supplement.  If  dividends  on  a  series  of  Preferred  Stock  are
noncumulative  and if the Board of  Directors  fails to  declare a  dividend  in
respect of a dividend  period with respect to such series,  then holders of such
Preferred  Stock  will have no right to  receive a  dividend  in respect of such
dividend period, and the Company will have no obligation to pay the dividend for
such  period,  whether  or not  dividends  are  declared  payable  on any future
dividend  payment  dates.  Dividends  on the shares of each series of  Preferred
Stock for which  dividends are cumulative will accrue from the date on which the
Company  initially  issues shares of such series.  Accumulations of dividends on
shares of Preferred Stock will not bear interest.

    No full  dividends  shall be  declared  or paid or set apart for  payment on
preferred  stock of the Company of any series  ranking,  as to  dividends,  on a
parity with or junior to the series of Preferred Stock offered by the Prospectus
Supplement  attached  hereto  for  any  period  unless  full  dividends  for the
immediately  preceding  dividend period on such Preferred  Stock  (including any
accumulation  in respect of unpaid  dividends  for prior  dividend  periods,  if
dividends on such Preferred Stock are cumulative) have been or contemporaneously
are declared and paid or declared and a sum sufficient  for the payment  thereof
is set apart for such payment.  When dividends are not so paid in full (or a sum
sufficient for such full payment is not so set apart) upon such Preferred  Stock
and any other preferred stock of the Company ranking on a parity as to dividends
with the Preferred  Stock,  dividends  upon shares of such  Preferred  Stock and
dividends on such other  preferred  stock shall be declared pro rata so that the
amount of dividends  declared per share on such Preferred  Stock and such Parity
Stock  shall in all  cases  bear to each  other  the  same  ratio  that  accrued
dividends on the shares of such Preferred Stock and accrued  dividends on shares
of such  Parity  Stock,  bear to each other as of their  respective  immediately
preceding  dividend  periods.  Unless full  dividends on the series of Preferred
Stock offered by the Prospectus  Supplement  attached  hereto have been declared
and paid or set apart for payment for the immediately  preceding dividend period
(including any  accumulation  in respect of unpaid  dividends for prior dividend
periods,  if  dividends on such  Preferred  Stock are  cumulative),  (a) no cash
dividend or distribution (other than in shares of Junior Stock) may be declared,
set aside or paid on the Junior  Stock,  (b) the  Company  may not,  directly or
indirectly,  repurchase,  redeem or  otherwise  acquire any shares of its Junior
Stock (or pay any monies into a sinking fund for the  redemption  of any shares)
except by conversion into or exchange for Junior Stock or in connection with any
employee benefit plan or arrangement,  and (c) the Company may not,  directly or
indirectly, repurchase, redeem or otherwise acquire any shares of such Preferred
Stock or Parity Stock (or pay any monies into a sinking fund for the

                               20

<PAGE>
redemption of any shares of any such stock)  otherwise than pursuant to pro rata
offers to purchase or a concurrent  redemption of all, or a pro rata portion, of
the  outstanding  shares of such  Preferred  Stock and Parity  Stock  (except by
conversion  into or exchange for Junior Stock or in connection with any employee
benefit plan or arrangement).

CONVERTIBILITY

    The terms,  if any, on which shares of Preferred  Stock of any series may be
exchanged  for or converted  (mandatorily  or  otherwise)  into shares of Common
Stock of the Company or another series of preferred stock or other securities of
the Company will be set forth in the Prospectus Supplement relating thereto. See
"Description of Common Stock."

REDEMPTION

    The terms,  if any, on which shares of Preferred  Stock of any series may be
redeemed will be set forth in the related Prospectus Supplement.

LIQUIDATION

    Unless otherwise specified in the applicable Prospectus  Supplement,  in the
event of a voluntary or  involuntary  liquidation,  dissolution or winding up of
the affairs of the Company,  the holders of a series of Preferred  Stock will be
entitled,  subject to the rights of creditors,  but before any  distribution  or
payment to the holders of Common Stock or any other  security  ranking junior to
the Preferred Stock on liquidation, dissolution or winding up of the Company, to
receive  out of the assets of the  Company,  whether  such assets are capital or
surplus and whether or not any  dividends  as such are  declared,  an amount per
share as set forth in the  related  Prospectus  Supplement  plus any accrued and
unpaid  dividends  for prior  dividend  periods,  if dividends on such series of
Preferred Stock are cumulative.  If the amounts  available for distribution with
respect to the Preferred  Stock and all other  outstanding  stock of the Company
ranking on a parity with the Preferred Stock upon liquidation are not sufficient
to satisfy the full  liquidation  rights of all the outstanding  Preferred Stock
and stock ranking on a parity therewith, then the holders of each series of such
stock will share ratably in any such distribution of assets in proportion to the
full  respective  preferential  amount (which in the case of preferred stock may
include accumulated dividends) to which they are entitled.  After payment of the
full amount of the  liquidation  preference,  the holders of shares of Preferred
Stock will not be entitled to any further  participation  in any distribution of
assets by the Company.

VOTING

    The  Preferred  Stock of a series will not be  entitled  to vote,  except as
provided  below or in the  applicable  Prospectus  Supplement and as required by
applicable law. Unless otherwise specified in the related Prospectus Supplement,
at any time dividends in an amount equal to six quarterly  dividend  payments on
the Preferred  Stock shall have accrued and be unpaid,  holders of the Preferred
Stock shall have the right to a separate  class vote  (together with the holders
of shares of any Parity Stock upon which like voting rights have been  conferred
and are exercisable,  "Voting Parity Stock") to elect two additional  members to
the Board of Directors at the next annual meeting of stockholders (or, if called
by 25% in interest of such Preferred  Stock, a special meeting of  stockholders)
and to maintain such director  representation  until  dividends on the Preferred
Stock have been paid in full  (including any  accumulation  in respect of unpaid
dividends from prior dividend periods,  if dividends on such Preferred Stock are
cumulative)  or declared  and a sum  sufficient  for the payment  thereof is set
apart  for such  payment.  Additionally,  without  the  affirmative  vote of the
holders of two-thirds of the shares of Preferred Stock then outstanding  (voting
separately as a class  together with any Voting Parity  Stock),  the Company may
not, either directly or indirectly or through merger or  consolidation  with any
other corporation,  (i) approve the authorization,  creation or issuance,  or an
increase in the  authorized  or issued  amount,  of any class or series of stock
ranking  prior to the shares of Preferred  Stock in rights and  preferences,  or
(ii) amend,  alter or repeal its Certificate of Incorporation or the Certificate
of  Designations  relating  to  the  Preferred  Stock  so as to  materially  and
adversely  change the voting  powers,  rights or  preferences  of the  Preferred
Stock;

                               21

<PAGE>
provided,  however,  that if any such  amendment,  alteration  or  repeal  would
materially  adversely  affect any voting  powers,  rights or  preferences of the
Preferred Stock or another series of Voting Parity Stock that are not enjoyed by
some or all of the  other  series  otherwise  entitled  to  vote  in  accordance
herewith,  the affirmative  vote of at least two-thirds of the votes entitled to
be cast by the  holders of all series  similarly  affected  shall be required in
lieu of the affirmative vote of at least two--thirds of the votes entitled to be
cast by the holders of the shares of Preferred Stock and the Voting Parity Stock
otherwise entitled to vote in accordance herewith;  and provided,  further, that
no vote of the holders of  Preferred  Stock shall be required if, at or prior to
the time when such  amendment,  alteration or repeal is to take effect,  or when
the issuance of any such class or series of stock ranking prior to the shares of
Preferred  Stock in rights and  preferences,  is to be made, as the case may be,
provision is made for the  redemption  of all shares of  Preferred  Stock at the
time  outstanding.  An amendment which increases the number of authorized shares
of or  authorizes  the  creation  or  issuance  of other  classes  or  series of
preferred  stock ranking junior to or on a parity with the Preferred  Stock with
respect to the payment of dividends or distribution of assets upon  liquidation,
dissolution  or winding up, or  substitutes  the  surviving  entity in a merger,
consolidation,  reorganization  or other business  combination  for the Company,
shall not be  considered to be an adverse  change  requiring the approval of the
Preferred Stock.

    As more fully described under  "Description of Depositary  Shares" below, if
the Company elects to issue Depositary Shares, each representing a fraction of a
share of a series of the Preferred  Stock,  each such Depositary  Share will, in
effect, be entitled to such fraction of a vote per Depositary Share.

NO OTHER RIGHTS

    The shares of a series of  Preferred  Stock  will not have any  preferences,
voting  powers or  relative,  participating,  optional or other  special  rights
except as set forth above or in the related  Prospectus  Supplement,  and in the
Certificate  of  Incorporation  and  the  Certificate  of  Designations  related
thereto, or as otherwise required by law.

TRANSFER AGENT AND REGISTRAR

    The transfer  agent for each series of Preferred  Stock will be described in
the related Prospectus Supplement.

SERIES E PREFERRED STOCK

    In December  1993,  the Company  issued 2.0 million  shares of 6% Cumulative
Convertible  Preferred Stock,  Series E, $.01 par value (the "Series E Preferred
Stock").  Holders of the Series E Preferred Stock are entitled to receive, when,
as, and if declared by the  Company's  Board of Directors  out of funds  legally
available  therefor,  cumulative  cash dividends at the rate of 6% per annum (an
amount  equivalent to $3.00 per annum per share),  payable quarterly in arrears.
In the event of any voluntary or involuntary liquidation, dissolution or winding
up of the Company,  the holders of the Series E Preferred Stock will be entitled
to receive distributions in the amount of $50.00 per share, plus all accrued and
unpaid  dividends.  Each share of Series E Preferred  Stock is  convertible,  in
whole or in part, at any time, unless previously redeemed, into 3.5945 shares of
Common Stock  (equivalent  to a  conversion  price of $13.91 per share of Common
Stock).  The  conversion  rate is subject to adjustment  upon the  occurrence of
certain events.

    The Series E Preferred  Stock ranks  junior to all  outstanding  debt of the
Company.  With respect to the payment of dividends and amounts upon liquidation,
dissolution  or winding up, the Series E Preferred  Stock ranks on a parity with
the  Company's  Series D Preferred  Stock and senior to the Common Stock and the
Series C Preferred Stock.

    Whenever  dividends  on the Series E Preferred  Stock are in arrears for six
quarterly  dividend  periods,  holders of the Series E Preferred  Stock  (voting
separately as a class together with holders of shares of the Company's  Series D
Preferred Stock and any other class or series of equity securities  ranking on a
parity  with the  Series E  Preferred  Stock)  will  have the right to elect two
additional  directors to serve on the  Company's  Board of Directors  until such
dividend  arrearage is eliminated.  In addition,  certain  changes that would be
materially adverse to the rights of holders of the Series E Preferred Stock

                               22

<PAGE>
and  voting  parity  stock  cannot  be  made  without  the  affirmative  vote of
two-thirds  of the shares of Series E Preferred  Stock and voting  parity stock,
voting as a single class, entitled to be cast thereon.

    The Series E Preferred Stock is not redeemable prior to December 1, 1996. On
and after such date, the Series E Preferred Stock is redeemable at the option of
the Company, in whole or in part,  initially for $52.10 per share and thereafter
at prices  declining  ratably annually on each December 1 to $50.00 per share on
and after December 1, 2003.

SERIES D PREFERRED STOCK

    In July 1993,  the Company  issued 2.0 million  shares of 5 5/8 % Cumulative
Convertible  Preferred Stock,  Series D, $.01 par value (the "Series D Preferred
Stock").  Holders of the Series D Preferred Stock are entitled to receive, when,
as, and if declared by the  Company's  Board of Directors  out of funds  legally
available  therefor,  cumulative cash dividends at the rate of 5 5/8 % per annum
(an amount  equivalent  to $2.8125 per annum per share),  payable  quarterly  in
arrears. In the event of any voluntary or involuntary  liquidation,  dissolution
or winding up of the Company,  the holders of the Series D Preferred  Stock will
be entitled to receive distributions in the amount of $50.00 per share, plus all
accrued  and  unpaid  dividends.  Each  share  of  Series D  Preferred  Stock is
convertible,  in whole or in part, at any time, unless previously redeemed, into
3.448 shares of Common  Stock  (equivalent  to a conversion  price of $14.50 per
share of Common Stock).  The conversion  rate is subject to adjustment  upon the
occurrence of certain events.

    The Series D Preferred  Stock ranks  junior to all  outstanding  debt of the
Company.  With respect to the payment of dividends and amounts upon liquidation,
dissolution  or winding up, the Series D Preferred  Stock ranks on a parity with
the  Company's  Series E Preferred  Stock and senior to the Common Stock and the
Series C Preferred Stock.

    Whenever  dividends  on the Series D Preferred  Stock are in arrears for six
quarterly  dividend  periods,  holders of the Series D Preferred  Stock  (voting
separately as a class together with holders of shares of the Company's  Series E
Preferred Stock and any other class or series of equity securities  ranking on a
parity  with the  Series D  Preferred  Stock)  will  have the right to elect two
additional  directors to serve on the  Company's  Board of Directors  until such
dividend  arrearage is eliminated.  In addition,  certain  changes that would be
materially  adverse to the rights of holders of the Series D Preferred Stock and
voting parity stock cannot be made without the affirmative vote of two-thirds of
the shares of Series D  Preferred  Stock and voting  parity  stock,  voting as a
single class, entitled to be cast thereon.

    The Series D Preferred  Stock is not  redeemable  prior to July 20, 1996. On
and after such date, the Series D Preferred Stock is redeemable at the option of
the Company, in whole or in part, initially for $51.969 per share and thereafter
at prices declining  ratably annually on each July 20 to $50.00 per share on and
after July 20, 2003.

RESERVED BUT UNISSUED SERIES C CONVERTIBLE PREFERRED STOCK

    The Company has reserved 5,112,765 shares of Series C Convertible  Preferred
Stock, $.01 par value per share (the "Series C Preferred  Stock"),  for issuance
upon exercise of outstanding  warrants if, for any reason, it is unable to issue
Common Stock to satisfy applicable exercise requirements.  No Series C Preferred
Stock is outstanding  and the Company is not presently  aware of any reason that
would require it to issue such stock or preclude it from issuing Common Stock.

    The Series C Preferred Stock ranks, with respect to the payment of dividends
and the distribution of assets, junior to all series of Preferred Stock. Subject
to the rights of a superior  series of preferred  stock,  each share of Series C
Preferred  Stock is entitled to receive,  when, as, and if declared by the Board
of Directors out of funds legally available therefor,  dividends payable in cash
in an  amount  per share  equal to the  aggregate  per share  amount of all cash
dividends, and the aggregate per share amount of all non-cash dividends or other
distributions, other than a dividend payable in shares of Common Stock, declared
on the Common Stock.

    Each share of Series C  Preferred  Stock is entitled to such number of votes
as each share of Common  Stock and,  except as otherwise  required by law,  will
vote together  with the Common Stock as a single  class.  Each share of Series C
Preferred  Stock is  convertible  at any time into one  share of fully  paid and
non-assessable Common Stock.

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<PAGE>
    If the Company  declares any dividend on the Common Stock  payable in shares
of Common Stock, or effects a subdivision or combination or consolidation of the
outstanding  shares of Common Stock into a greater or lesser number of shares of
Common  Stock,  then the  dividends  and the  number of votes per share to which
holders of shares of Series C Preferred  Stock are  entitled to will be adjusted
by multiplying the amount or number the holders were previously entitled to by a
fraction,  the  numerator  of which is the  number of  shares  of  Common  Stock
outstanding  immediately  after such event and the  denominator  of which is the
number of shares of Common Stock that were outstanding immediately prior to such
event.

    The holders of Series C Preferred  Stock have no  preemptive  rights and are
not subject to redemption. In the event of liquidation,  dissolution, or winding
up of the  Company,  prior to  distribution  to the  holders  of shares of stock
ranking  junior  to the  Series C  Preferred  Stock,  the  holders  of  Series C
Preferred  Stock  are  entitled  to $.10 per share  plus an amount  equal to any
unpaid dividends and  distributions  on the Series C Preferred  Stock,  provided
that the  holders of Series C  Preferred  Stock  shall be entitled to receive an
aggregate  amount  per  share,  subject  to  certain  adjustments,  equal to the
aggregate  amount to be  distributed  per share to  holders  of shares of Common
Stock.

                       DESCRIPTION OF DEPOSITARY SHARES

    The description set forth below and in any Prospectus  Supplement of certain
provisions  of the Deposit  Agreement (as defined  below) and of the  Depositary
Shares and Depositary Receipts does not purport to be complete and is subject to
and qualified in its entirety by reference to the forms of Deposit Agreement and
Depositary  Receipts  relating to each series of the Preferred  Stock which have
been or will be  filed  with  the  Commission  at or  prior  to the  time of the
offering of such series of the Preferred Stock.

GENERAL

    The Company  may,  at its option,  elect to offer  fractional  interests  in
shares of Preferred  Stock,  rather than shares of Preferred Stock. In the event
such  option is  exercised,  the  Company  will  provide  for the  issuance by a
Depositary to the public of receipts for Depositary  Shares,  each of which will
represent a fractional  interest (to be set forth in the  Prospectus  Supplement
relating to a particular  series of the Preferred Stock which will be filed with
the  Commission  at or prior to the time of the  offering  of such series of the
Preferred Stock as described below).

    The shares of any series of the Preferred  Stock  underlying  the Depositary
Shares  will be  deposited  under a separate  Deposit  Agreement  (the  "Deposit
Agreement")  between  the Company  and a bank or trust  company  selected by the
Company  having its principal  office in the United States and having a combined
capital and surplus of at least $50,000,000 (the  "Depositary").  The Prospectus
Supplement relating to a series of Depositary Shares will set forth the name and
address of the Depositary.  Subject to the terms of the Deposit Agreement,  each
owner of a Depositary  Share will be entitled,  in proportion to the  applicable
fractional  interest in a share of Preferred  Stock  underlying  such Depositary
Shares, to all the rights and preferences of the Preferred Stock underlying such
Depositary  Share  (including  dividend,  voting,  redemption,   conversion  and
liquidation rights).

    The  Depositary  Shares will be  evidenced  by  Depositary  Receipts  issued
pursuant to the Deposit Agreement.

    Pending the  preparation of definitive  engraved  Depositary  Receipts,  the
Depositary  may,  upon  the  written  order  of  the  Company,  issue  temporary
Depositary  Receipts  substantially  identical  to (and  entitling  the  holders
thereof to all the rights pertaining to) the definitive  Depositary Receipts but
not  in  definitive  form.  Definitive  Depositary  Receipts  will  be  prepared
thereafter without unreasonable delay, and temporary Depositary Receipts will be
exchangeable for definitive Depositary Receipts at the Company's expense.

    Upon  surrender of Depositary  Receipts at the office of the  Depositary and
upon payment of the charges provided in the Deposit Agreement and subject to the
terms thereof,  a holder of Depositary Shares is entitled to have the Depositary
deliver to such  holder  the whole  shares of  Preferred  Stock  underlying  the
Depositary Shares evidenced by the surrendered Depositary Receipts.

                               24

<PAGE>
DIVIDENDS AND OTHER DISTRIBUTIONS

    The   Depositary   will   distribute   all  cash  dividends  or  other  cash
distributions  received in respect of the Preferred  Stock to the record holders
of  Depositary  Shares  relating to such  Preferred  Stock in  proportion to the
numbers of such  Depositary  Shares owned by such holders on the relevant record
date. The  Depositary  shall  distribute  only such amount,  however,  as can be
distributed without attributing to any holder of Depositary Shares a fraction of
one cent,  and any balance not so  distributed  shall be added to and treated as
part of the next sum  received  by the  Depositary  for  distribution  to record
holders of Depositary Shares.

    In the event of a  distribution  other  than in cash,  the  Depositary  will
distribute  property  received by it to the record holders of Depositary  Shares
entitled  thereto,  unless the Depositary  determines that it is not feasible to
make such  distribution,  in which case the Depositary may, with the approval of
the Company,  sell such property and  distribute the net proceeds from such sale
to such holders.

    The Deposit Agreement will also contain provisions relating to the manner in
which any  subscription  or similar  rights offered by the Company to holders of
the Preferred Stock shall be made available to holders of Depositary Shares.

REDEMPTION OF DEPOSITARY SHARES

    If a series of the  Preferred  Stock  underlying  the  Depositary  Shares is
subject to redemption,  the Depositary Shares will be redeemed from the proceeds
received by the Depositary  resulting from the redemption,  in whole or in part,
of such series of the Preferred  Stock held by the  Depositary.  The  Depositary
shall mail notice of redemption not less than 30 and not more than 60 days prior
to the date fixed for redemption to the record holders of the Depositary  Shares
to be so redeemed at their  respective  addresses  appearing in the Depositary's
books. The redemption price per Depositary Share will be equal to the applicable
fraction of the  redemption  price per share payable with respect to such series
of the Preferred  Stock.  Whenever the Company redeems shares of Preferred Stock
held by the  Depositary,  the Depositary  will redeem as of the same  redemption
date the number of Depositary  Shares  relating to shares of Preferred  Stock so
redeemed.  If less than all of the  Depositary  Shares are to be  redeemed,  the
Depositary  Shares to be redeemed  will be selected by lot or pro rata as may be
determined by the Depositary.

    After the date fixed for  redemption,  the  Depositary  Shares so called for
redemption  will no longer be deemed  to be  outstanding  and all  rights of the
holders of the  Depositary  Shares will  cease,  except the right to receive the
moneys payable upon such redemption and any money or other property to which the
holders of such  Depositary  Shares  were  entitled  upon such  redemption  upon
surrender  to  the  Depositary  of  the  Depositary   Receipts  evidencing  such
Depositary Shares.

VOTING THE PREFERRED STOCK

    Upon receipt of notice of any meeting at which the holders of the  Preferred
Stock are entitled to vote, the Depositary will mail the  information  contained
in such  notice of  meeting  to the  record  holders  of the  Depositary  Shares
relating to such Preferred Stock.  Each record holder of such Depositary  Shares
on the  record  date  (which  will be the same date as the  record  date for the
Preferred  Stock) will be entitled to instruct the Depositary as to the exercise
of the  voting  rights  pertaining  to the number of shares of  Preferred  Stock
underlying  such holder's  Depositary  Shares.  The  Depositary  will  endeavor,
insofar  as  practicable,  to vote the  number  of  shares  of  Preferred  Stock
underlying such Depositary Shares in accordance with such instructions,  and the
Company  will  agree to take all  action  which may be deemed  necessary  by the
Depositary  in order to  enable  the  Depositary  to do so.  To the  extent  the
Depositary does not receive specific instructions from the holders of Depositary
Shares relating to such Preferred  Stock, it will vote shares of Preferred Stock
in accordance with the recommendation of the Company, unless otherwise indicated
in the Prospectus Supplement.

AMENDMENT AND TERMINATION OF DEPOSITARY AGREEMENT

    The form of Depositary  Receipt  evidencing  the  Depositary  Shares and any
provision  of the  Deposit  Agreement  may at any time be amended  by  agreement
between the Company and the Depositary.

                               25

<PAGE>
    However,  any amendment which  materially and adversely alters the rights of
the existing  holders of  Depositary  Shares will not be  effective  unless such
amendment has been approved by the record  holders of at least a majority of the
Depositary Shares then outstanding. A Deposit Agreement may be terminated by the
Company or the Depositary only if (i) all outstanding Depositary Shares relating
thereto  have  been  redeemed  or (ii)  there has been a final  distribution  in
respect of the Preferred  Stock of the relevant  series in  connection  with any
liquidation,  dissolution or winding up of the Company and such distribution has
been distributed to the holders of the related Depositary Shares.

CHARGES OF DEPOSITARY

    The Company will pay all transfer and other taxes and  governmental  charges
arising  solely from the existence of the depositary  arrangements.  The Company
will pay charges of the Depositary in connection with the initial deposit of the
Preferred Stock and any redemption of the Preferred Stock. Holders of Depositary
Shares will pay other transfer and other taxes and governmental charges and such
other charges as are expressly provided in the Deposit Agreement to be for their
accounts.

MISCELLANEOUS

    The Depositary will forward to the holders of Depositary  Shares all reports
and  communications  from the Company which are delivered to the  Depositary and
which the Company is required to furnish to the holders of the Preferred Stock.

    Neither the  Depositary nor the Company will be liable if it is prevented or
delayed  by law  or any  circumstance  beyond  its  control  in  performing  its
obligations under the Deposit Agreement.  The obligations of the Company and the
Depositary  under the Deposit  Agreement  will be limited to performance in good
faith of their duties  thereunder and they will not be obligated to prosecute or
defend any legal  proceeding  in respect of any  Depositary  Shares or Preferred
Stock unless  satisfactory  indemnity is  furnished.  They may rely upon written
advice of counsel or accountants,  or information provided by persons presenting
Preferred  Stock for  deposit,  holders of  Depositary  Shares or other  persons
believed to be competent and on documents believed to be genuine.

RESIGNATION AND REMOVAL OF DEPOSITARY

    The Depositary may resign at any time by delivering to the Company notice of
its  election to do so, and the  Company may at any time remove the  Depositary,
any such  resignation  or  removal  to take  effect  upon the  appointment  of a
successor  Depositary  and its  acceptance of such  appointment.  Such successor
Depositary  must be  appointed  within 60 days after  delivery  of the notice of
resignation  or removal and must be a bank or trust company having its principal
office in the United  States and having a  combined  capital  and  surplus of at
least $50,000,000.

                         DESCRIPTION OF COMMON STOCK

    The  Company's  Certificate  of  Incorporation  authorizes  the  issuance of
100,000,000 shares of common stock, $.01 par value per share ("Common Stock").

    The holders of Common  Stock are entitled to receive  dividends  when and as
declared by the Board of Directors of the Company out of funds legally available
therefor,  provided  that if any  shares  of  preferred  stock  are at the  time
outstanding,  the payment of dividends  on Common  Stock or other  distributions
(including  purchases  of Common  Stock) may be subject to the  declaration  and
payment of full  cumulative  dividends,  and the  absence of  arrearages  in any
mandatory sinking fund, on outstanding shares of preferred stock.

    The holders of Common  Stock are  entitled to one vote for each share on all
matters voted on by stockholders,  including elections of directors. The holders
of Common Stock do not have any conversion,  redemption or preemptive rights. In
the event of the dissolution,  liquidation or winding up of the Company, holders
of Common Stock are entitled to share ratably in any assets  remaining after the
satisfaction in full of the prior rights of creditors,  including holders of the
Company's  indebtedness,   and  the  aggregate  liquidation  preference  of  any
preferred stock then outstanding.

                               26

<PAGE>

    All  outstanding  shares of Common Stock are, and the shares offered hereby,
upon issuance, will be, fully paid and non-assessable.

    Certain provisions of the Company's  Certificate of Incorporation and Bylaws
may be considered as having an anti-takeover effect. Such provisions empower the
Board of Directors to fix the rights and  preferences  of and to issue shares of
preferred  stock;  limit certain  substantial  stockholders  of the Company from
significantly  increasing  their  interest in the stock or assets of the Company
without  the consent of the Board of  Directors  and/or a  supermajority  of the
stockholders of the Company; prohibit stockholders of the Company from calling a
special meeting;  place  restrictions on the ability of stockholders to nominate
persons for the position of director; and require that the Board of Directors be
divided into three classes. In addition,  certain provisions of law may have the
effect  of  protecting  the  Company  against   undesired   takeover   attempts.
Specifically,  under  Delaware  law (and a similar  provision  of the  Company's
Certificate of  Incorporation),  in certain instances,  significant  holders (as
specified)  of the  Company's  voting  stock  may  not,  without  approval  of a
specified vote of the other stockholders,  or approval of the Company's Board of
Directors (or the independent  members  thereof) prior to becoming a significant
holder, acquire additional interests in the Company's assets or capital stock.

    The transfer agent for the Common Stock is Mellon Financial Services,  whose
address is 111 Founders Plaza, 11th Floor, East Hartford, Connecticut 06108.

                           DESCRIPTION OF WARRANTS

GENERAL

    The  Company  may  issue  Warrants,  including  Warrants  to  purchase  Debt
Securities ("Debt Warrants"),  as well as other types of Warrants.  Warrants may
be issued  independently  of or together  with any other  Securities  and may be
attached to or separate  from such  Securities.  Each series of Warrants will be
issued under a separate  warrant  agreement  (each a "Warrant  Agreement") to be
entered  into between the Company and a warrant  agent  ("Warrant  Agent").  The
Warrant Agent will act solely as an agent of the Company in connection  with the
Warrants of such series and will not assume any  obligation or  relationship  of
agency or trust for or with any holders or  beneficial  owners of Warrants.  The
following  sets forth  certain  general  terms and  provisions  of the  Warrants
offered  hereby.  Further  terms  of the  Warrants  and the  applicable  Warrant
Agreement are set forth in the applicable Prospectus Supplement.

DEBT WARRANTS

    The applicable  Prospectus  Supplement  will describe the following terms of
the Debt Warrants in respect of which this  Prospectus is being  delivered:  (1)
the title of such Debt Warrants; (2) the aggregate number of such Debt Warrants;
(3) the price or prices at which  such Debt  Warrants  will be  issued;  (4) the
currency or currencies,  including composite  currencies,  in which the price of
such Debt  Warrants may be payable;  (5) the  designation,  aggregate  principal
amount and terms of the Debt Securities  purchasable  upon exercise of such Debt
Warrants;  (6) if applicable,  the  designation and terms of the Debt Securities
with which such Debt  Warrants  are issued and the number of such Debt  Warrants
issued with each such Debt Security;  (7) the currency or currencies,  including
composite  currencies,  in which the  principal of or any premium or interest on
the Debt  Securities  purchasable  upon  exercise of such Debt  Warrant  will be
payable;  (8) if applicable,  the date on and after which such Debt Warrants and
any related Debt  Securities will be separately  transferable;  (9) the price at
which and currency or currencies,  including composite currencies,  in which the
Debt  Securities  purchasable  upon  exercise  of  such  Debt  Warrants  may  be
purchased; (10) the date on which the right to exercise such Debt Warrants shall
commence and the date on which such right shall expire; (11) if applicable,  the
minimum or maximum  amount of such Debt  Warrants  which may be exercised at any
one time; (12) information with respect to book-entry  procedures,  if any; (13)
if  applicable,  a  discussion  of  certain  United  States  Federal  income tax
considerations; and (14) any other terms of such Debt Warrants, including terms,
procedures  and  limitations  relating to the exchange and exercise of such Debt
Warrants.

OTHER WARRANTS

    The Company may issue other Warrants.  The applicable  Prospectus Supplement
will describe the following terms of any such other Warrants in respect of which
this Prospectus is being delivered: (1) the

                               27

<PAGE>
title of such Warrants; (2) the securities (which may include Preferred Stock or
Common Stock) for which such Warrants are  exercisable;  (3) the price or prices
at which such Warrants will be issued; (4) the currency or currencies, including
composite currencies, in which the price of such Warrants may be payable; (5) if
applicable,  the designation and terms of the Debt Securities or Preferred Stock
with which such Warrants are issued and the number of such Warrants  issued with
each such Debt Security or share of Preferred Stock; (6) if applicable, the date
on and after which such  Warrants and the related Debt  Securities  or Preferred
Stock will be  separately  transferable;  (7) if  applicable,  a  discussion  of
certain United States Federal income tax considerations; and (8) any other terms
of such Warrants,  including terms,  procedures and limitations  relating to the
exchange and exercise of such Warrants.

                             PLAN OF DISTRIBUTION

    The Company may sell the  Securities  (and, in the case of Preferred  Stock,
Depositary  Shares  representing  fractional  interests  therein) to one or more
underwriters for public offering and sale by them or may sell the Securities (or
Depositary Shares) to investors directly or through agents. Any such underwriter
or agent involved in the offer and sale of the Securities (or Depositary Shares)
will be named in the applicable Prospectus Supplement.  The Company has reserved
the right to sell the Securities (or Depositary Shares) directly to investors on
its own behalf in those jurisdictions where it is authorized to do so.

    Underwriters  may offer and sell the Securities (or Depositary  Shares) at a
fixed price or prices that may be changed,  at market  prices  prevailing at the
time  of  sale,  at  prices  related  to such  prevailing  market  prices  or at
negotiated  prices.  The  Company  also may  offer and sell the  Securities  (or
Depositary  Shares) in  exchange  for one or more of its  outstanding  series of
equity or debt securities  (including any outstanding  Securities).  The Company
also may, from time to time, authorize dealers,  acting as the Company's agents,
to offer and sell the  Securities  (or  Depositary  Shares)  upon such terms and
conditions as set forth in the applicable Prospectus  Supplement.  In connection
with the sale of the Securities (or Depositary Shares), underwriters may receive
compensation  from  the  Company  in  the  form  of  underwriting  discounts  or
commissions and may also receive  commissions  from purchasers of the Securities
(or Depositary Shares) for whom they may act as agent. Underwriters may sell the
Securities (or Depositary  Shares) to or through  dealers,  and such dealers may
receive  compensation in the form of discounts,  concessions or commissions from
the underwriters and/or commissions from the purchasers for whom they may act as
agents.

    Any underwriting  compensation paid by the Company to underwriters or agents
in connection  with the offering of the Securities (or Depositary  Shares),  and
any  discounts,   concessions  or  commissions   allowed  by   underwriters   to
participating   dealers,   will  be  set  forth  in  the  applicable  Prospectus
Supplement.  Dealers  and  agents  participating  in  the  distribution  of  the
Securities  (or  Depositary  Shares) may be deemed to be  underwriters,  and any
discounts and  commissions  received by them and any profit  realized by them on
resale of the Securities (or Depositary Shares) may be deemed to be underwriting
discounts  and  commissions.  Underwriters,  dealers and agents may be entitled,
under agreements entered into with the Company,  to indemnification  against and
contribution toward certain civil liabilities.

    If so indicated in the applicable  Prospectus  Supplement,  the Company will
authorize  dealers  acting as the  Company's  agents to  solicit  agreements  by
certain  institutions to purchase the Securities (or Depositary Shares) from the
Company  at the public  offering  price set forth in the  applicable  Prospectus
Supplement  pursuant to delayed delivery contracts  ("Contracts")  providing for
payment and  delivery on the date or dates  stated in a  Prospectus  Supplement.
Each Contract will be for an amount not less than,  and the aggregate  amount of
the Securities (or Depositary  Shares),  based on the liquidation value thereof,
sold pursuant to Contracts will be not less nor more than the respective amounts
stated  in a  Prospectus  Supplement.  Institutions  with whom  Contracts,  when
authorized,  may  be  made  include  commercial  and  savings  banks,  insurance
companies,  pension  funds,  investment  companies,  educational  and charitable
institutions  and other  institutions,  but will in all cases be  subject to the
approval of the Company.  Contracts  will be subject to the  condition  that the
purchase by an institution of the Securities (or Depositary  Shares)  covered by
Contracts  will not at the time of delivery be prohibited  under the laws of any
jurisdiction in the United States to which such institution is subject.

                               28

<PAGE>

    Any Securities issued hereunder (other than Common Stock) will be new issues
of securities with no established  trading market. Any underwriters or agents to
or through whom such  Securities are sold by the Company for public offering and
sale may make a market in such Securities,  but such underwriters or agents will
not be  obligated  to do so and may  discontinue  any market at any time without
notice.  No assurance can be given as to the liquidity of the trading market for
any Securities.

    Certain of the  underwriters,  dealers or agents and their associates may be
customers of, engage in transactions with, and perform services for, the Company
and certain of its affiliates in the ordinary course of business.

                                   EXPERTS

    The  consolidated  balance  sheets as of December 31, 1993 and 1992, and the
consolidated statements of operations,  changes in stockholders' equity and cash
flows and the related  schedules for each of the three years in the period ended
December  31,  1993,  incorporated  into this  Prospectus  and  elsewhere in the
Registration Statement,  have been audited by Arthur Andersen & Co., independent
public accountants,  as indicated in their reports with respect thereto, and are
incorporated  herein in reliance  upon the  authority of said firm as experts in
giving said reports.

                          VALIDITY OF THE SECURITIES

    The validity of the Securities  will be passed upon for the Company by Snell
& Wilmer L.L.P.,  One Arizona  Center,  Phoenix,  Arizona 85004,  counsel to the
Company,  and  for any  underwriters  by the  counsel  named  in the  applicable
Prospectus Supplement.

                               29


<PAGE>
================================================================================
   NO  PERSON  HAS  BEEN  AUTHORIZED  TO GIVE  ANY  INFORMATION  OR TO MAKE  ANY
REPRESENTATIONS  OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS SUPPLEMENT OR THE
PROSPECTUS AND, IF GIVEN OR MADE, SUCH INFORMATION OR  REPRESENTATIONS  MUST NOT
BE RELIED UPON AS HAVING BEEN AUTHORIZED.  NEITHER THE PROSPECTUS SUPPLEMENT NOR
THE PROSPECTUS  CONSTITUTES AN OFFER TO SELL OR THE  SOLICITATION OF AN OFFER TO
BUY ANY  SECURITIES  OTHER  THAN THE  SECURITIES  DESCRIBED  IN THIS  PROSPECTUS
SUPPLEMENT  AND THE  PROSPECTUS  OR AN OFFER TO SELL OR THE  SOLICITATION  OF AN
OFFER  TO BUY SUCH  SECURITIES  IN ANY  CIRCUMSTANCES  IN  WHICH  SUCH  OFFER OR
SOLICITATION IS UNLAWFUL.  NEITHER THE DELIVERY OF THIS PROSPECTUS SUPPLEMENT OR
THE  PROSPECTUS  NOR ANY SALE MADE  HEREUNDER  OR  THEREUNDER  SHALL,  UNDER ANY
CIRCUMSTANCES,  CREATE  ANY  IMPLICATION  THAT  THERE  HAS BEEN NO CHANGE IN THE
AFFAIRS OF THE COMPANY SINCE THE DATE HEREOF OR THAT THE  INFORMATION  CONTAINED
OR  INCORPORATED  BY  REFERENCE  HEREIN OR  THEREIN  IS  CORRECT  AS OF ANY TIME
SUBSEQUENT TO THE DATE OF SUCH INFORMATION.

                              TABLE OF CONTENTS
                            PROSPECTUS SUPPLEMENT

                                                               PAGE
                                                               ----
               Prospectus Summary ..........................    S-3
               Recent Developments .........................    S-4
               Use of Proceeds .............................    S-7
               Capitalization ..............................    S-8
               Summary Financial, Operating and Reserve Data    S-9
               Description of Certain Terms of the Notes ...   S-11
               Underwriting ................................   S-14
               Validity of the Notes .......................   S-14

                                      PROSPECTUS

               Available Information .......................    2
               Incorporation of Certain Documents by
                Reference ..................................    2
               The Company .................................    3
               Investment Considerations ...................    6
               Use of Proceeds .............................    7
               Ratio of Earnings to Fixed Charges and
                Earnings to Combined Fixed Charges and
                Preferred Stock Dividends Requirements .....    7
               Description of Debt Securities ..............    7
               Description of Preferred Stock ..............   19
               Description of Depositary Shares ............   24
               Description of Common Stock .................   26
               Description of Warrants .....................   27
               Plan of Distribution ........................   28
               Experts .....................................   29
               Validity of the Securities ..................   29
================================================================================

<PAGE>
================================================================================



                                  $200,000,000



                              MAGMA COPPER COMPANY


                           % SENIOR SUBORDINATED NOTES
                                DUE MAY 15, 2005









                          ----------------------------
                              PROSPECTUS SUPPLEMENT
                          ----------------------------














                              GOLDMAN, SACHS & CO.
                               MERRILL LYNCH & CO.

================================================================================



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