JOHNS MANVILLE INTERNATIONAL GROUP INC
11-K, 1998-06-24
ABRASIVE, ASBESTOS & MISC NONMETALLIC MINERAL PRODS
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<PAGE>
 
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549


                                   FORM 11-K


              [X]  ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE
                        SECURITIES EXCHANGE ACT OF 1934

                  For the fiscal year ended December 31, 1997


                                      OR


            [_]  TRANSITON REPORT PURSUANT TO SECTION 15(d) OF THE
                        SECURITIES EXCHANGE ACT OF 1934


                  For the transition period from_____to______


                         Commision file number: 1-8247


  A.  Full title of the plan and the address of the plan, if different from 
      that of the issuer named below:

      JOHNS MANVILLE EMPLOYEES 401(k) PLAN

  B.  Name of issuer of the securities held pursuant to the plan and the
      address of its principal executive office:

                          Johns Manville Corporation
                          717 17th Street
                          Denver, Colorado 80202

<PAGE>
 
                     JOHNS MANVILLE EMPLOYEES 401(K) PLAN

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



                    REPORT ON AUDIT OF FINANCIAL STATEMENTS

                   as of December 31, 1997 and 1996 and for
                       the year ended December 31, 1997



<PAGE>
 
                     JOHNS MANVILLE  EMPLOYEES 401(K) PLAN
            INDEX TO FINANCIAL STATEMENTS AND SUPPLEMENTAL SCHEDULES

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

                                                               Pages
                                                               -----


Report of Independent Accountants                                  2
 
Financial Statements:
 
  Statements of Net Assets Available for Benefits with
   Fund Information at December 31, 1997 and 1996              3 - 6
 
  Statement of Changes in Net Assets Available for Benefits
     with Fund Information for the year ended
     December 31, 1997                                         7 - 8
 
  Notes to Financial Statements                               9 - 18
 
Supplemental Schedules:
 
  Schedule of Assets Held for Investment Purposes
     (Item 27a Form 5500)                                         19
 
  Schedule of Reportable Transactions
     (Item 27d Form 5500)                                         20
 

                                      -1-

<PAGE>
 
                       REPORT OF INDEPENDENT ACCOUNTANTS


To the Compensation Committee
   of the Board of Directors of Johns Manville Corporation

We have audited the accompanying statements of net assets available for benefits
with fund information of the Johns Manville Employees 401(k) Plan ("Plan") as of
December 31, 1997 and 1996 and the statement of changes in net assets available
for benefits with fund information for the year ended December 31, 1997.  These
financial statements are the responsibility of the Plan's management.  Our
responsibility is to express an opinion on these financial statements based on
our audits.

We conducted our audits in accordance with generally accepted auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in
all material respects, the net assets available for benefits of the Plan at
December 31, 1997 and 1996, and the changes in net assets available for benefits
for the year ended December 31, 1997, in conformity with generally accepted
accounting principles.

Our audits were performed for the purpose of forming an opinion on the basic
financial statements taken as a whole.  The supplemental schedules are presented
for the purpose of additional analysis and are not a required part of the basic
financial statements but are supplementary information required by the
Department of Labor's Rules and Regulations for Reporting and Disclosure under
the Employee Retirement Income Security Act of 1974.  These supplemental
schedules are the responsibility of the Plan's management.  The Fund Information
in the statements of net assets available for benefits and the statement of
changes in net assets available for benefits is presented for purposes of
additional analysis rather than to present the net assets available for plan
benefits and changes in net assets available for plan benefits of each fund.
The supplemental schedules and Fund Information have been subjected to the
auditing procedures applied in the audits of the basic financial statements and,
in our opinion, are fairly stated in all material respects in relation to the
basic financial statements taken as a whole.


/s/ Coopers & Lybrand L.L.P.
- ----------------------------
    Coopers & Lybrand L.L.P.

Denver, Colorado
June 17, 1998

                                      -2-

<PAGE>
 
                     JOHNS MANVILLE EMPLOYEES 401(K) PLAN
     STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS WITH FUND INFORMATION
                          December 31, 1997 and 1996

<TABLE>
<CAPTION>
 
                             Retirement
                             Government                                                                                International
                            Money Market  Short-Term      Asset     Disciplined     Value      Magellan        OTC      Growth and
          1997               Portfolio     Bond Fund     Manager    Equity Fund     Fund         Fund       Portfolio   Income Fund
          ----              ------------  -----------  -----------  -----------  -----------  -----------  ----------- -------------
<S>                          <C>           <C>          <C>          <C>          <C>          <C>          <C>          <C>
          ASSETS
Investments (Notes 2, 3,
 4, 5 and 6):
  Common stock of Johns
   Manville Corporation, at
    market value 
     (cost $1,471,988)
  Commingled funds, at
   market value:
    Retirement Government
     Money Market Portfolio
      (cost $13,467,220)     $ 13,467,220
   Asset Manager (cost
    $35,877,845)                                        $42,302,412
   Disciplined Equity Fund 
    (cost $34,967,418)                                               $42,699,460
   Value Fund (cost
    $29,826,963)                                                                  $31,960,853
   Magellan Fund (cost
    $46,139,201)                                                                               $57,005,851
   OTC Portfolio (cost
    $17,027,717)                                                                                            $18,554,441
   International Growth and
     Income Fund (cost
      $10,221,157)                                                                                                       $10,871,106

   Short-Term Bond Fund (cost
    $55,495,144)                           $55,494,023
 
 Investment contracts, at
  contract value
 
 Loans to Plan members, at
  cost (approximates market)
 
Cash and equivalents (Note 
 3)
 
Due from associated funds          10,043       44,033       41,328       37,979       31,404       76,295       21,215       16,522

 
Contributions receivable:
   Plan members                    17,360       56,157       68,005       59,865       60,909      105,565       41,411       27,388

   Company                        120,856      396,301      470,843      429,495      392,207      806,761      284,751      211,058

 
Accrued income receivable
 (Note 2)
 
    Total assets               13,615,479   55,990,514   42,882,588   43,226,799   32,445,373   57,994,472   18,901,818   11,126,074
                              -----------  -----------  -----------  -----------  -----------  -----------  -----------  -----------
 
      LIABILITIES
 
Payable to associated funds
                              -----------  -----------  -----------  -----------  -----------  -----------  -----------  -----------
 
Net assets available for
 benefits                     $13,615,479  $55,990,514  $42,882,588  $43,226,799  $32,445,373  $57,994,472  $18,901,818  $11,126,074
                              ===========  ===========  ===========  ===========  ===========  ===========  ===========  ===========

</TABLE>
  The accompanying notes are an integral part of these financial statements.

                                      -3-
<PAGE>
 
                     JOHNS MANVILLE EMPLOYEES 401(K) PLAN
     STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS WITH FUND INFORMATION
                          December 31, 1997 and 1996

<TABLE>
<CAPTION>
 
 
                                                          JM
                                                         Stock        Loan         Mutual       Combined
      1997 (Continued)                                   Fund        Account    Benefit Life     Total
      ----                                            -----------  -----------  ------------  ------------
<S>                                                   <C>          <C>          <C>           <C>
 
         ASSETS
Investments (Notes 2, 3, 4, 5 and 6):
 Common stock of Johns Manville
     Corporation at market value (cost $1,471,988)    $   658,504                               $  658,504
 Commingled funds, at market value:
   Retirement Government Money
     Market Portfolio (cost $13,467,220)                                                        13,467,220
   Asset Manager (cost $35,877,845)                                                             42,302,412
   Disciplined Equity Fund (cost $34,967,418)                                                   42,699,460
   Value Fund (cost $29,826,963)                                                                31,960,853
   Magellan Fund (cost $46,139,201)                                                             57,005,851
   OTC Portfolio (cost $17,027,717)                                                             18,554,441
   International Growth and
     Income Fund (cost $10,221,157)                                                             10,871,106
   Short-Term Bond Fund (cost $55,495,144)                                                      55,494,023
 
 Investment contracts, at contract value                                         $14,581,613    14,581,613
 
 Loans to Plan members, at cost
   (approximates market)                                           $ 8,756,552                   8,756,552
 
Cash and equivalents (Note 3)
 
Due from associated funds                                     957                                  279,776
 
Contributions receivable:
   Plan members                                             1,525                                  438,185
   Company                                                 13,036                                3,125,308
 
Accrued income receivable (Note 2)                                      64,721                      64,721
                                                      -----------  -----------  ------------  ------------
 
    Total assets                                          674,022    8,821,273    14,581,613   300,260,025
 
      LIABILITIES
 
Payable to associated funds                                            279,776                     279,776
                                                      -----------  -----------  ------------  ------------
 
Net assets available for benefits                     $   674,022  $ 8,541,497   $14,581,613  $299,980,249
                                                      ===========  ===========  ============  ============
</TABLE>
  The accompanying notes are an integral part of these financial statements.


                                      -4-
<PAGE>
 
                     JOHNS MANVILLE EMPLOYEES 401(K) PLAN
     STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS WITH FUND INFORMATION
                          December 31, 1997 and 1996
<TABLE>
<CAPTION>
                            Retirement                                                                                
                            Government                                                                                 International
                           Money Market   Income         Asset      Disciplined     Value      Magellan        OTC      Growth and 
        1996                Portfolio      Fund         Manager     Equity Fund     Fund         Fund       Portfolio   Income Fund
        ----               -----------  -----------  -------------  -----------  -----------  -----------  ----------- ------------
<S>                        <C>          <C>          <C>            <C>          <C>          <C>          <C>         <C>
          ASSETS
Investments (Notes 2, 3,
 4, 5 and 6):
 Common stock of Johns
  Manville
     Corporation at market
      value (cost $976,165)
 Commingled funds, at
  market value:
   Retirement Government
    Money Market Portfolio 
     (cost $9,429,706)     $ 9,429,706
   Asset Manager (cost
    $31,447,918)                                       $34,650,950
   Disciplined Equity Fund 
    (cost $26,510,270)                                              $30,253,151
   Value Fund (cost
    $22,142,535)                                                                 $24,003,971
   Magellan Fund (cost
    $40,558,383)                                                                              $44,842,426
   OTC Portfolio (cost
    $14,078,032)                                                                                             $16,003,360
   International Growth and
     Income Fund (cost
      $8,434,009)                                                                                                         $9,236,749

   Short-Term Bond Fund (cost
    $16,595,052)                        $19,085,157
 
 Investment contracts, 
  at contract value                      39,324,462
 
 Loans to Plan members, at
  cost (approximates market)
    
 
Cash and equivalents 
 (Note 3)                                 2,754,161
 
Due from associated funds        7,730       42,709         42,635       31,491       28,797       65,406       20,771      15,996
 
Contributions receivable:
   Plan members                 13,693       58,916         61,990       50,731       50,405       96,878       39,037      25,231

   Company                     132,046      523,495        594,154      477,790      444,866      978,179      343,266     251,483

 
Accrued income receivable
 (Note 2)
 
    Total assets             9,583,175   61,788,900     35,349,729   30,813,163   24,528,039   45,982,889   16,406,434   9,529,459
                            ----------  -----------  -------------  -----------  -----------  -----------  -----------  ----------
 
      LIABILITIES
 
Payable to associated funds
                            ----------  -----------  -------------  -----------  -----------  -----------  -----------  ----------
 
Net assets available for
 benefits                   $9,583,175  $61,788,900    $35,349,729  $30,813,163  $24,528,039  $45,982,889  $16,406,434  $9,529,459
                            ==========  ===========  =============  ===========  ===========  ===========  ===========  ==========
</TABLE>
   The accompanying notes are an integral part of these financial statements.

                                      -5-
<PAGE>
 
                     JOHNS MANVILLE EMPLOYEES 401(K) PLAN
     STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS WITH FUND INFORMATION
                          December 31, 1997 and 1996
<TABLE>
<CAPTION>
 
 
                                                    Schuller
                                                     Common
                                                      Stock        Loan         Mutual       Combined
        1996 (Continued)                              Pool        Account    Benefit Life     Total
        ----                                       -----------  -----------  ------------  ------------
<S>                                                <C>          <C>          <C>           <C>
 
         ASSETS
Investments (Notes 2, 3, 4, 5 and 6):
 Common stock of Johns Manville
    Corporation at market value (cost $976,165)    $   128,910                             $    128,910
 Commingled funds, at market value:
   Retirement Government Money
     Market Portfolio (cost $9,429,706)                                                       9,429,706
   Asset Manager (cost $31,447,918)                                                          34,650,950
   Disciplined Equity Fund (cost $26,510,270)                                                30,253,151
   Value Fund (cost $22,142,535)                                                             24,003,971
   Magellan Fund (cost $40,558,383)                                                          44,842,426
   OTC Portfolio (cost $14,078,032)                                                          16,003,360
   International Growth and
     Income Fund (cost $8,434,009)                                                            9,236,749
   Short-Term Bond Fund (cost $16,595,052)                                                   19,085,157
 
 Investment contracts, at contract value                                      $14,651,511    53,975,973
 
 Loans to Plan members, at cost
   (approximates market)                                        $ 7,865,239                   7,865,239
 
Cash and equivalents (Note 3)                                                                 2,754,161
 
Due from associated funds                                                                       255,535
 
Contributions receivable:
   Plan members                                                                                 396,881
   Company                                                                                    3,745,279
 
Accrued income receivable (Note 2)                                   55,919                      55,919
                                                   -----------  -----------  ------------  ------------
 
    Total assets                                       128,910    7,921,158    14,651,511   256,683,367
 
      LIABILITIES
 
Payable to associated funds                                         255,535                     255,535
                                                   -----------  -----------  ------------  ------------
 
Net assets available for benefits                  $   128,910  $ 7,665,623   $14,651,511  $256,427,832
                                                   ===========  ===========  ============  ============
</TABLE>
  The accompanying notes are an integral part of these financial statements.

                                      -6-
<PAGE>
 
                     JOHNS MANVILLE EMPLOYEES 401(K) PLAN
STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS WITH FUND INFORMATION
                     for the Year Ended December 31, 1997
<TABLE>
<CAPTION>
                 Retirement                              
                 Government                                                                                           International
                 Money Market   Short-Term     Asset       Disciplined      Value        Magellan         OTC          Growth and 
  1997           Portfolio      Bond Fund      Manager     Equity Fund      Fund          Fund         Portfolio      Income Fund
  ----           ------------   ------------  -----------  -----------   -----------   ------------    -----------   -------------  
<S>              <C>            <C>            <C>         <C>           <C>           <C>             <C>           <C>            
Investment Income:
 Interest income
 
 Dividend income  $   585,879   $  1,151,621   $3,710,144  $ 5,088,457   $ 4,277,544   $  3,649,286    $ 1,304,639     $   657,260
 
 Net appreciation
  (depreciation) 
   in fair value
    of investments
     (Note 2)                         (1,754)   4,235,836    5,406,997     1,040,274      8,219,117        111,744          65,744
                 ------------   ------------  -----------  -----------   -----------   ------------    -----------   -------------  
Total investment
 income               585,879      1,149,867    7,945,980   10,495,454     5,317,818     11,868,403      1,416,383         723,004
                 ------------   ------------  -----------  -----------   -----------   ------------    -----------   -------------  
Contributions    
 (Note 7):
  By Plan members     456,627        480,530    1,771,938    1,653,743     1,668,278      2,936,270      1,170,392         815,418
  By the Company      123,303        539,425    1,024,319      905,092       857,487      1,745,568        630,512         473,227
                 ------------   ------------  -----------  -----------   -----------   ------------    -----------   -------------  
                      579,930      1,019,955    2,796,257    2,558,835     2,525,765      4,681,838      1,800,904       1,288,645
                 ------------   ------------  -----------  -----------   -----------   ------------    -----------   -------------  
Transfers into 
 fund from
  associated funds 16,696,454     59,542,627    4,638,618    9,253,821     8,359,152      7,097,030      7,615,952       2,180,742
                 ------------   ------------  -----------  -----------   -----------   ------------    -----------   -------------  
Transfers out of 
 fund to 
 associated funds (12,744,766)    (4,551,899)  (5,928,944)  (7,857,477)   (6,543,214)    (8,763,382)    (7,373,601)     (2,018,197)
                 ------------   ------------  -----------  -----------   -----------   ------------    -----------   -------------  
Withdrawals,
 forfeitures and
  loans (Note 8)   (1,078,820)    (1,169,686)  (1,907,124)  (2,031,971)   (1,740,045)    (2,869,662)      (964,069)       (577,460)
                 ------------   ------------  -----------  -----------   -----------   ------------    -----------   ------------- 
Administrative 
 expenses              (6,373)          (350)     (11,928)      (5,026)       (2,142)        (2,644)          (185)           (119)
                 ------------   ------------  -----------  -----------   -----------   ------------    -----------   ------------- 
Net increase 
 (decrease)         4,032,304     55,990,514    7,532,859   12,413,636     7,917,334     12,011,583      2,495,384       1,596,615
 
Net assets 
 available for
  benefits:
 
   Beginning of
    year            9,583,175                  35,349,729   30,813,163    24,528,039     45,982,889     16,406,434       9,529,459
                 ------------   ------------  -----------  -----------   -----------   ------------    -----------   -------------  
   End of year   $ 13,615,479    $55,990,514  $42,882,588  $43,226,799   $32,445,373    $57,994,472    $18,901,818     $11,126,074
                 ============   ============  ===========  ===========   ===========   ============    ===========   =============  
</TABLE>
  The accompanying notes are an integral part of these financial statements.

                                      -7-
<PAGE>
 
                     JOHNS MANVILLE EMPLOYEES 401(K) PLAN
STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS WITH FUND INFORMATION
                     for the Year Ended December 31, 1997

<TABLE>
<CAPTION> 
                                             JM
                              Income        Stock         Loan           Mutual         Combined
    1997 (Continued)           Fund         Fund         Account      Benefit Life       Total
    ----                     ----------   ----------   -----------    -------------   ------------
<S>                          <C>          <C>          <C>            <C>             <C> 
Investment Income:
   Interest income           $  331,784                 $  702,813    $   1,136,945   $  2,171,542
 
   Dividend income                                                                      20,424,830
 
   Net appreciation 
    (depreciation) in fair
     value of investments 
      (Note 2)                2,441,951   $ (97,432)                                    21,422,477
                             ----------   ---------    -----------    -------------   ------------
Total investment income       2,773,735     (97,432)       702,813        1,136,945     44,018,849
                             ----------   ---------    -----------    -------------   ------------ 
Contributions (Note 7):
   By Plan members            1,010,968      18,177                                     11,982,341
   By the Company               329,333      17,564                                      6,645,830
                             ----------   ---------    -----------    -------------   ------------ 
                              1,340,301      35,741                                     18,628,171
                             ----------   ---------    -----------    -------------   ------------
Transfers into fund from
   associated funds          10,355,571     669,358      4,319,594                     130,728,919
                             ----------   ---------    -----------    -------------   ------------
Transfers out of fund to
   associated funds         (70,501,060)    (40,431)    (3,856,797)        (549,151)  (130,728,919)
                             ----------   ---------    -----------    -------------   ------------ 
Withdrawals, forfeitures 
 and loans (Note 8)          (5,747,605)    (22,124)      (289,736)        (657,692)   (19,055,994)
                             ----------   ---------    -----------    -------------   ------------ 
Administrative expenses          (9,842)                                                   (38,609)
                             ----------   ---------    -----------    -------------   ------------ 
Net increase (decrease)     (61,788,900)    545,112        875,874          (69,898)    43,552,417
 
Net assets available 
 for benefits:
 
   Beginning of year         61,788,900     128,910      7,665,623       14,651,511    256,427,832
                             ----------   ---------    -----------    -------------   ------------ 
   End of year               $        0   $ 674,022    $ 8,541,497      $14,581,613   $299,980,249
                             ==========   =========    ===========    =============   ============
</TABLE>
  The accompanying notes are an integral part of these financial statements.

                                      -8-
<PAGE>
 
                     JOHNS MANVILLE EMPLOYEES 401(K) PLAN
                         NOTES TO FINANCIAL STATEMENTS
                             _____________________



1. Plan Description:
   ---------------- 

   The Johns Manville Employees 401(k) Plan (the "Plan"), formerly the Schuller
   International Employees 401(k) Plan, is sponsored by Johns Manville
   Corporation and offered through its wholly owned subsidiary, Johns Manville
   International Inc. (the "Company").  The Plan provides eligible employees a
   convenient means for regular and systematic savings with several investment
   options.  Plan participants have the option of directing the investment of
   their contributions and related Company contributions into any one or a
   combination of separate funds.  Fidelity Institutional Retirement Services
   Company ("Fidelity"),  the trustee of the Plan's assets, administers, manages
   and reports the Plan's investment transactions. The Plan offers the following
   Fidelity funds as investment options: Retirement Government Money Market
   Portfolio, Short-Term Bond Fund, Asset Manager, Disciplined Equity Fund,
   Value Fund, Magellan Fund, OTC Portfolio, International Growth and Income
   Fund, and the JM Stock Fund.  Summarized information regarding eligibility,
   vesting, contributions and benefits is provided in the Summary Plan Document.

   Effective July 15, 1997 the JM Stock Fund, which holds common stock of Johns
   Manville Corporation, became a new investment option.  Participants may
   invest up to 25% of the total value of their account in this fund.   Prior to
   July 1997, some participants had investments in the Schuller Common Stock
   Pool, which also held common stock of Johns Manville Corporation but had been
   unavailable as an investment option since 1982, although the Plan allowed
   additional shares to be purchased with dividends paid on the common stock. In
   1997, investments in the Schuller Common Stock Pool were transferred into the
   JM Stock Fund.

   The loan account holds loans made to eligible participants out of their
   vested account balances in the aforementioned funds.  Principal and interest
   payments are reinvested in the participants investment funds in accordance
   with the participant's investment election in effect at the time the payments
   are made.

   At December 31, 1997, there were a total of 5,622 participants in the Plan.
   They participated in one or more of the funds as follows: 791 in the
   Retirement Government Money Market Portfolio, 2,611 in the Short-Term Bond
   Fund, 2,021 in the Asset Manager, 2,194 in the Disciplined Equity Fund, 1,826
   in the Value Fund, 2,787 in  the Magellan Fund, 1,385 in the OTC Portfolio,
   1,287 in the International Growth and Income Fund, 297 in the JM Stock Fund,
   and 985 in the Mutual Benefit Life contract (see Notes 3 and 5).
   Additionally, 1,567 participants had loans outstanding through the loan
   account at December 31, 1997.

                                      -9-
<PAGE>
 
                     JOHNS MANVILLE EMPLOYEES 401(K) PLAN
                         NOTES TO FINANCIAL STATEMENTS
                            _____________________  

2. Summary of  Significant Accounting Policies:
   ------------------------------------------- 

   Investments in the funds are stated at current values based upon the
   following:

   Retirement Government  original cost plus accrued dividends.
     Money Market Fund
 
   Short-Term Bond Fund   quotations obtained directly from mutual fund company.

   Asset Manager Fund     quotations obtained directly from mutual fund company.

   Disciplined Equity     quotations obtained directly from mutual fund company.
     Fund

   Value Fund             quotations obtained directly from mutual fund company.
 
   Magellan Fund          quotations obtained directly from mutual fund company.

   OTC Portfolio          quotations obtained directly from mutual fund company.

   International Growth   quotations obtained directly from mutual fund company.
     and Income Fund

   Income Fund            contract value (original cost plus accrued interest 
                          and contributions less withdrawals) and quotations
                          obtained directly from mutual fund company.

   Schuller Common        unit value (stock quotations obtained from New York
     Stock Pool           Stock Exchange adjusted by a factor for cash reserve).
 
   JM Stock Fund          stock quotations obtained from New York Stock 
                          Exchange.

   Mutual Benefit Life    contract value (original cost plus accrued interest 
                          and contributions less withdrawals).

   Transactions in the various funds are accounted for using the trade date.
   Realized gains or losses from such transactions are determined on the basis
   of average cost.  Accrued income receivable on investments consists of
   dividends receivable based on the ex-dividend date and interest income
   receivable at December 31, 1997 and 1996.

                                      -10-
<PAGE>

                     JOHNS MANVILLE EMPLOYEES 401(K) PLAN
                         NOTES TO FINANCIAL STATEMENTS
                              -------------------
 
2. Summary of  Significant Accounting Policies, continued:
   -------------------------------------------            

   Beginning in 1996, investments in the Income Fund were transferred into the
   Short-Term Bond Fund as contracts in the Income Fund matured or were
   liquidated.  All funds were transferred or liquidated by December 31, 1997.
   Previously, the Plan entered into investment contracts with various insurance
   and investment companies within the Income Fund.  The contracts were credited
   with earnings on the underlying investments and charged for Plan withdrawals
   and administrative expenses charged by these companies.  The contracts were
   included in the financial statements at contract value, as reported by the
   insurance and investment companies.  Contract value represented contributions
   under the contracts, plus earnings, less Plan withdrawals and administrative
   expenses.  The average yields presented on the contracts approximated the
   contract rate.  No valuation reserves were required to adjust contract
   amounts, as the contract value of the reported investment contracts
   approximated fair value.  Investment contracts held in the Income Fund
   contained provisions that could reduce the earnings on the investment below
   the guaranteed rate if there was an early discontinuance of the contract.

   The Plan is exposed to credit risk in the event of nonperformance by the
   counterparties to financial instruments but has no off-balance-sheet credit
   risk of accounting loss.  The Plan anticipates, however, that counterparties
   will be able to fully satisfy their obligations to the Plan.  The Plan does
   not require collateral or other security to support investments with credit
   risk.

   The Plan presents in the statement of changes in net assets available for
   benefits with fund information the net appreciation (depreciation) in the
   fair value of its investments which consists of the realized gains (losses)
   and the unrealized appreciation (depreciation) on those investments,
   including derivative financial instruments (see Note 6).

   The preparation of the Plan's consolidated financial statements in conformity
   with generally accepted accounting principles requires management to make
   estimates and assumptions that affect the amounts reported in these financial
   statements, including disclosures of contingent liabilities.

                                      -11-
<PAGE>

                     JOHNS MANVILLE EMPLOYEES 401(K) PLAN
                         NOTES TO FINANCIAL STATEMENTS
                              ------------------


3.  Investments:
    ------------
    The number of shares and carrying value per share at December 31, were as
    follows:
 
                                                 1997          1996
                                              ----------    ----------
     Retirement Government Money Market
     ----------------------------------
       Shares                                 13,467,220     9,429,706   
       Market value per share                      $1.00         $1.00 

     Short-Term Bond Fund
     --------------------
       Shares                                  6,378,623*    2,188,665*
       Market value per share                      $8.70         $8.72
 
     Asset Manager
     -------------
       Shares                                  2,305,309*    2,103,883*
       Market value per share                     $18.35        $16.47
 
     Disciplined Equity Fund
     -----------------------
       Shares                                  1,651,178*    1,372,647*
       Market value per share                     $25.86        $22.04
 
     Value Fund
     ----------
       Shares                                    591,430*      465,735*
       Market value per share                     $54.04        $51.54
 
     Magellan Fund
     -------------
       Shares                                    598,361*      556,013*
       Market value per share                     $95.27        $80.65
 
     OTC Portfolio
     -------------
       Shares                                    554,692*      489,250*
       Market value per share                     $33.45        $32.71
 
     International Growth and Income Fund
     ------------------------------------
       Shares                                    551,833       472,468
       Market value per share                     $19.70        $19.55
 
     Income Fund
     -----------
       Security Life of Denver Contract
         Shares                                             18,971,620*
         Contract value per share                                $1.00
         Average yield                                            3.00%


                                     -12-
<PAGE>
                     JOHNS MANVILLE EMPLOYEES 401(K) PLAN
                         NOTES TO FINANCIAL STATEMENTS
                              -------------------


3.  Investments, continued:                        1997            1996
    -----------                                ------------    ------------
 
       Morgan Guaranty ABS
         Shares                                                   7,890,809
         Contract value per share                                     $1.00
         Average yield                                                 7.09%
 
       Confederation Life Insurance Contract
         Shares                                                   3,626,142
         Contract value per share                                     $1.00
         Average yield (Note 4)                                        0.00%
 
       Peoples Security Life ABS
         Shares                                                   2,991,598
         Contract value per share                                     $1.00
         Average yield                                                 7.73%
 
       Sun Life Insurance of America Contract
         Units                                                    2,923,252
         Contract value per share                                     $1.00
         Average yield                                                 8.02%
 
       Protective Life Insurance Contract
         Units                                                    2,921,041
         Contract value per share                                     $1.00
         Average yield                                                 7.98%
 
     JM Stock Fund
     -------------
       Shares                                        64,896
       Market value per share                        $10.15
 
     Schuller Common Stock Pool
     --------------------------
       Shares                                                         5,801
       Market value per share                                        $22.22
 
     Loan Account
     ------------
       Remaining principal balance, at cost      $8,756,552      $7,865,239
         (approximates market)


                                      -13-
<PAGE>

                     JOHNS MANVILLE EMPLOYEES 410(K) PLAN
                         NOTES TO FINANCIAL STATEMENTS
                             --------------------
 
3. Investments, continued:
   -----------            
 
     Mutual Benefit Life Insurance Contract
     --------------------------------------
        Shares                                  14,581,613    14,651,511*
        Contract value per share                     $1.00         $1.00
        Average yield (Note 5)                        8.05%         6.25%

   * Represents at least 5% of net assets available for benefits at December 31
   of the corresponding year.

   The cash and cash equivalents portion of the Income Fund was invested
   primarily in short-term U.S. Government Securities until it was transferred
   to the Fidelity Short-Term Bond Fund, on March 1, 1996. Investments in
   existing contracts at December 31, 1996 remained until maturity, at which
   time the cash was invested in this bond fund. Currently, the Plan does not
   intend to offer such contracts as an investment option in the future.

4. Confederation Life Insurance Company:
   ------------------------------------ 

   At December 31, 1996, the Income Fund held a $3.6 million investment contract
   with Confederation Life, representing 5.9% of the net assets of the Income
   Fund. Since 1994, assets of this contract were segregated by the Plan as
   Canadian and U.S. regulators assumed control of Confederation Life and a
   court subsequently placed them into rehabilitation. During the rehabilitation
   period, certain hardship withdrawals were permitted and participants had
   access to the remainder of the Income Fund. During April and May 1997, Plan
   participants received a total of $3.9 million from Confederation Life,
   effectively terminating the contract.
 
5. Mutual Benefit Life Insurance Company:
   ------------------------------------- 

   During 1991, Mutual Benefit Life was placed under rehabilitory
   conservatorship with the state of New Jersey by court order, and during 1993,
   a plan of rehabilitation (the "Rehabilitation") was approved. Mutual Benefit
   Life became insolvent during 1994 and its assets and liabilities were assumed
   by a successor company, MBL Life Assurance Corporation ("MBLLAC"). Pursuant
   to the Rehabilitation, participants had the option of opting out of the
   existing contract or accepting participation in a new, restructured contract
   to be issued by MBLLAC. Participants electing to opt out of the contract
   received a total of $864,000, representing 55% of their account balances with
   interest credited at 3.5% annually through payout. Participants who elected
   to accept participation in the restructured contract were credited with
   balances totaling approximately $15.2 million, with interest credited at the
   contract rate (11.05%) through December 31, 1991, at 4.0% for 1992, at 3.5%
   for 1993, at 3.5% for 1994, at 3.55% for 1995, at 5.25% through September 30,
   1996, at 9.25% through December 31, 1996, at 6.35% through June 30, 1997, and
   at 9.75% through the remainder



                                      -14-
<PAGE>

                     JOHNS MANVILLE EMPLOYEES 410(K) PLAN
                         NOTES TO FINANCIAL STATEMENTS
                             --------------------
 
5. Mutual Benefit Life Insurance Company, continued:
   -------------------------------------            

   of 1998. Interest to be paid thereafter has not been determined. The contract
   value of Mutual Benefit reflects interest credited at these rates. Payment of
   principal and interest has been guaranteed by a consortium of major insurance
   companies.

   During the rehabilitation period, which will extend through December 1999,
   withdrawals will be available. The cashout penalty percentage is determined
   on a quarterly basis and was 4% at December 31, 1997. Effective January 1,
   1998 the penalty percentage is 0%. In February 1997, the Superior Court of
   New Jersey gave final approval to a Settlement Agreement that eliminated
   pending appeals and further litigation regarding the Rehabilitation Plan. As
   part of the agreement, the installment payout provision at the end of
   Rehabilitation was eliminated. Contract account values are now scheduled to
   be paid in full at the end of the Rehabilitation Period, December 1999.

6. Derivative Financial Instruments:
   -------------------------------- 

   The Plan has only limited involvement with derivative financial instruments
   and does not use them for trading purposes. The fair value of derivatives
   utilized by the funds is determined as the amounts the Plan would receive or
   pay to terminate the contracts at the reporting date, taking into account the
   current unrealized gains or losses on open contracts. Market or dealer quotes
   are available for many derivatives; otherwise, pricing or valuation models
   are applied to current market information to estimate fair value.

   Investments in the Asset Manager Fund, the Magellan Fund and the
   International Growth and Income Fund occasionally include derivative
   financial instruments such as futures, forward, swap or option contracts. The
   primary objectives of investing in domestic equity futures are to remain
   fully invested and maintain liquidity ("long positions"), and to hedge
   against equity price declines ("short positions"). Futures contracts are
   settled on a daily basis using funds set aside in separate accounts. Foreign
   exchange forward contracts are entered into to manage foreign currency
   exchange exposures and to hedge the funds' investments against currency
   fluctuations. At December 31, 1997 and 1996 these derivative investments
   comprised an immaterial portion of the total net assets available for
   benefits.

7. Contributions, Eligibility and Vesting:
   -------------------------------------- 

   Pre-tax Contributions - Eligible employees may contribute to the Plan through
   ---------------------                                                        
   a reduction in salary on a pre-tax basis (a "401(k)" Plan ) from 1% to 9% of
   salary (defined as regular fixed compensation plus commissions, bonuses,
   overtime pay and profit sharing distributions) or, for highly compensated
   employees, from 1% to 8% of salary on a pre-tax basis.



                                      -15-
<PAGE>
                     JOHNS MANVILLE EMPLOYEES 401(K) PLAN
                         NOTES TO FINANCIAL STATEMENTS
                             --------------------

 
7. Contributions, Eligibility and Vesting, continued:
   --------------------------------------            

   After-tax Contributions - Employees may elect to contribute 1% to 7% of
   -----------------------                                                
   salary on an after-tax basis regardless of the percentage of pre-tax
   contributions.

   Company Contributions - The Company contribution prior to July 15, 1997 was
   ---------------------                                                     
   based on a 50% fixed match plus up to 50% variable match based on the
   operating performance of the Company, on the first six percent of pre-tax
   employee contributions. Effective July 15, 1997, the amount of the variable
   match was amended to be based on the Company's sole discretion. Company
   contributions of $2,976,905 related to the variable match were accrued for at
   December 31, 1997. After-tax contributions and rollover contributions are not
   matched by the Company. The Company's annual contribution made on behalf of
   any one employee is subject to certain maximums as specified in the Plan and
   regulated by the Internal Revenue Service.

   Eligibility - Full-time permanent salaried employees and non-union hourly
   -----------                                                              
   employees at participating locations are eligible to become Plan participants
   on the first day of employment or re-employment. If the employee is part-time
   or temporary, such employee becomes eligible to participate after completing
   at least one year and 1,000 hours of service.

   Vesting - Employee contributions and earnings thereon vest to the participant
   -------                                                                      
   immediately. Company contributions and the earnings thereon vest to the
   participant with the earlier of five years of service or three years
   participation in the Plan.

8. Withdrawals and Forfeitures and Loans:
   ------------------------------------- 

   Rollover contributions which have been in the Plan at least 24 months and all
   vested amounts (except those relating to participant pre-tax contributions
   and earnings thereon) may be withdrawn by the participant at any time.
   Employee pre-tax contributions and earnings thereon may not be withdrawn
   until the participant attains age 59-1/2, or leaves the Company, or furnishes
   satisfactory proof of financial hardship.

   If a participant's employment is terminated for reasons other than death,
   disability or retirement, the participant forfeits any unvested Company
   contributions and applicable earnings. Participants with vested balances of
   at least $3,500, can elect to defer the distribution of funds to December 31
   of the year they attain age 65.

   Forfeitures serve to reduce future contributions of the Company. During 1997,
   forfeitures totaled $120,644. A participant who is terminated and
   subsequently rehired by the Company within five years has the option of
   repaying to the Plan, within two years of the re-employment date, cash in one
   lump sum equal to the full amount received from the Plan at


                                      -16-
<PAGE>

                     JOHNS MANVILLE EMPLOYEES 401(K) PLAN
                         NOTES TO FINANCIAL STATEMENTS
                             --------------------

 
8. Withdrawals and Forfeitures and Loans, continued:
   -------------------------------------            

   termination. If such repayment is made, the Company will restore to the
   participant's account the amounts previously forfeited.

   A participant who retires or becomes disabled, and has a balance of at least
   $3,500, can elect to defer the distribution of funds credited to the
   participant in the Plan until April of the year following the year in which
   the participant attains age 70-1/2 or, in the event of death, the beneficiary
   can elect to defer distribution for a period of 60 months from date of death.

   Withdrawal of Company contributions is subject to suspension of Company
   contributions for the greater of three months or the time period during which
   the employee does not make contributions. Hardship withdrawals are subject to
   one year suspension of employee contributions. Suspension does not occur if
   the withdrawal is limited to after-tax contributions and the related earnings
   thereon.

   The Plan's loan provisions allow participants to borrow up to 50% of the
   value of their vested account balances; however, in no event within the
   previous 12 month period can the participant's aggregate loan balance exceed
   $50,000. All loans are collateralized by the participant's account balances
   and bear interest at one percent over the prime rate on the last day of the
   prior month.

9. Tax Status:
   ---------- 

   The Plan is designed to constitute a qualified trust under Section 401(a) of
   the Internal Revenue Code and is therefore considered to be exempt from
   federal income tax under provisions of Section 501(a). An application was
   filed with the Internal Revenue Service for a determination as to whether the
   Plan meets the qualification requirements of Section 401(a) of the Internal
   Revenue Code of 1986. On April 7, 1998, the Company received a favorable tax
   qualification determination letter, retroactive to December 31, 1996, from
   the Internal Revenue Service. The Company believes that the Plan remains in
   accordance with the applicable requirements under the Internal Revenue Code
   of 1986. Participants in the Plan will not be taxed on pre-tax contributions,
   rollover contributions, earnings on contributions from the Company's
   retirement plans, Company contributions to the Plan on their behalf or on
   earnings credited to their accounts until such contributions and earnings are
   distributed or otherwise made available to them.

10.Termination of the Plan:
   ----------------------- 

   It is the intent of the Company to continue the Plan; however, in the event
   that the Plan is terminated by the Company, accounts would automatically be
   fully vested. The assets of the Plan would be distributed to the participants
   based on their account balances. In addition, any



                                     -17-
<PAGE>

                     JOHNS MANVILLE EMPLOYEES 401(K) PLAN
                         NOTES TO FINANCIAL STATEMENTS
                             --------------------
 
10. Termination of the Plan, continued:
    -----------------------            

    previously forfeited amounts which had not been applied to reduce Company
    contributions would be credited ratably to the accounts of the participants
    remaining in the Plan at the time of such termination.

11. Administrative Expenses Paid by Company:
    --------------------------------------- 

    The Company paid approximately $134,000 in 1997 of administrative expenses
    to the Plan's trustee and outside consultants on behalf of the Plan, which
    are not included in the financial statements.



                                     -18-
<PAGE>
 
                     JOHNS MANVILLE EMPLOYEES 401(K) PLAN
          ITEM 27a - SCHEDULE OF ASSETS HELD FOR INVESTMENT PURPOSES
                               December 31, 1997
<TABLE> 
<CAPTION> 
                               Description of Investment Including
Identity of Issue, Borrower,   Maturity Date, Rate of Interest, Collateral
Lessor, or Similar Party       Par or Maturity Value, if applicable           Share Balance        Cost         Current Value
- ----------------------------   --------------------------------------------   -------------    -------------    -------------
<S>                            <C>                                            <C>              <C>              <C> 
Retirement Government
 Money Market                  Money market fund                              13,467,220       $ 13,467,220     $ 13,467,220
 
Short-Term Bond Fund           Income mutual fund                              6,378,623         55,495,144       55,494,023
 
Asset Manager                  Mutual fund of domestic and foreign stocks,
                               bonds, and short-term instruments               2,305,309         35,877,845       42,302,412
 
Disciplined Equity Fund        Domestic common stocks mutual fund              1,651,178         34,967,418       42,699,460

Value Fund                     Common stock mutual fund of companies
                               considered undervalued or having growth
                               potential                                         591,430         29,826,963       31,960,853
 
Magellan Fund                  Common stock and convertible securities
                               mutual fund                                       598,361         46,139,201       57,005,851

OTC Portfolio                  Mutual fund of securities of companies
                               mainly traded in the over-the-counter
                               market                                            554,692         17,027,717       18,554,441
 
International Growth           Foreign equity and debt securities
 and Income Fund               mutual fund                                       551,833         10,221,157       10,871,106

JM Stock Fund*                 Common stock                                       64,896          1,471,988          658,504

Loans to Plan members          Participant loans (1)                                                               8,756,552
 
Mutual Benefit Life            Insurance contract                             14,581,613         14,581,613       14,581,613
                                                                                               ------------     ------------

                                                                                               $259,076,266     $296,352,035
                                                                                               ============     ============
</TABLE>

(1)  Loans to Plan members bear interest ranging from 7% to 12% and mature on
     January, 1998 through August, 2027.

* Party in interest



                                      -19-
<PAGE>
 
                     JOHNS MANVILLE EMPLOYEES 401(K) PLAN
                ITEM 27d - SCHEDULE OF REPORTABLE TRANSACTIONS
                     for the year ended December 31, 1997
<TABLE>
<CAPTION>
                                                                                                          Current 
                                                                                                          Value at     
Identity                                               Number of                Number                    Transaction  Net Gain 
of Fund        Description of Asset   Total Purchases  Purchases  Total Sales   of Sales   Cost of Asset  Date          (Loss)
- ------------   ---------------------  ---------------  ---------  -----------   --------   -------------  -----------  ----------
<S>            <C>                    <C>              <C>        <C>           <C>        <C>            <C>          <C> 
Retirement 
Government
Money Market   Money market fund      $17,996,835         226     $13,959,321      213     $13,959,321    $13,959,321
                             
 
Short-Term 
Bond Fund      Income mutual fund     $61,217,712          82     $ 5,721,935       81     $ 5,722,567    $ 5,721,935  $     (632)
 
Income Fund    Income mutual fund
               commingled with a
               blend of guaranteed
               investment contracts
               (GICS) and investment
               contracts with 
               insurance and 
               investment companies   $12,652,776         171     $76,258,507      175     $71,326,451    $76,258,507  $4,932,056
 
Asset Manager  Mutual fund of 
               domestic and foreign 
               stocks, bonds, and 
               short-term 
               instruments            $11,263,621         248     $ 7,847,996      238     $ 6,833,695    $ 7,847,996  $1,014,301
 
Disciplined 
Equity Fund    Domestic common 
               stocks mutual fund     $16,933,786         250     $ 9,894,474      240     $ 8,476,638    $ 9,894,474  $1,417,836
 
Value Fund     Common stock mutual 
               fund of companies
               considered 
               undervalued or having 
               growth potential       $15,202,008         248     $ 8,285,401      231     $ 7,517,580    $ 8,285,401  $  767,821
 
Magellan Fund  Common stock and 
               convertible
               securities mutual 
               fund                   $15,579,995         252     $11,635,688      249     $ 9,999,178    $11,635,688  $1,636,510
 
OTC Portfolio  Mutual fund of
               securities of
               companies
               mainly traded in
               the over-the-counter 
               market                 $10,777,192         248     $ 8,337,854      233     $ 7,827,507    $ 8,337,854  $  510,347
</TABLE> 



                                      -20-
<PAGE>
 
 
     Pursuant to the requirements of the Securities and Exchange Act of 1934,
the trustees (or other persons who administer the Plan) have duly caused this
annual report to be signed by the undersigned hereunto duly authorized.



June 17, 1998                           JOHNS MANVILLE EMPLOYEES
                                        401(k) PLAN



                                        By:     /s/ Ann J. Henley
                                            ------------------------------------
                                                    Ann J. Henley
                                                    Director, Benefits

                                       21


<PAGE>


 
                      CONSENT OF INDEPENDENT ACCOUNTANTS

We consent to the incorporation by reference in the registration statement of 
Johns Manville Corporation of Form S-8 (File No. 333-31007) of our report dated 
June 17, 1998, on our audits of the financial statements of the Johns Manville 
Employees 401(k) Plan as of December 31, 1997 and 1996, and for the year ended 
December 31, 1997, which report is incorporated by reference in this Annual 
Report of Form 11-K.

COOPERS & LYBRAND L.L.P

Denver, Colorado
June 22, 1998


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