AGREEMENT

  This Agreement ("Agreement") is entered into on this the 23th day of October,
  1995, by and between Brown & Root, Inc., a Delaware corporation, having its
  principal place of business in Houston, Texas (hereinafter "B&R") and Atlas
  Corporation, a Delaware corporation, having its principal place of business in
  Denver, Colorado (hereinafter "Atlas").

                                   RECITALS

WHEREAS, Atlas desires that B&R provide contract mining services (the "Work") at
  its Gold Pick and Gold Ridge mineral deposits situated in Eureka County,
  Nevada as set forth in the contract mining bid package dated August 1995 as
  transmitted to B&R, as later amended by a facsimile transmission from John
  Leahy ( Atlas' consulting project engineer) to B&R on August 28, 1995 (the
  "Project");

WHEREAS, B&R is willing, able and desires to perform the Work; and

WHEREAS, in connection with obtaining the contract to perform the Work, B&R has
  expressed a willingness to satisfy Atlas' request to guarantee a loan for the
  Project subject to the terms and conditions as set forth herein.

NOW, THEREFORE, in consideration of the mutual promises and agreements contained
  herein, the value of which is hereby acknowledged, the Parties hereto agree as
  follows:

    I. Negotiation of Definitive Agreement Required.  This Agreement is not, in
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      itself, intended to be the definitive agreement between the Parties, but
      rather is intended by the Parties to serve as the framework of subsequent
      negotiations and documentation. The Parties agree to use their best
      efforts to reach a definitive agreement for performing the Work at the
      Project (the "Definitive Agreement") on or before November 30, 1995, which
      is of a similar nature to previous mining contracts

 
      between Atlas and B&R and incorporates the terms and conditions set forth
      in this Agreement.

    II.Conditions precedent to negotiation of the Definitive Agreement.
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         (1)  Atlas hereby acknowledges that the obligation of B&R to negotiate
      the Definitive Agreement is expressly contingent upon the satisfactory
      completion of a due diligence review (the "Review") by B&R. Such Review
      will include, but not necessarily be limited to the following:
 
                (a)  an independent evaluation to confirm the reasonableness of
              the assumptions used to develop Atlas' projected cash flows for
              the Project as presented to B&R at its Houston offices by Atlas on
              October 12, 1995 (the "Meeting").

                (b)  a valuation of the proposed security that allows B&R to
              reasonably conclude that there is sufficient value in the
              collateral to satisfy Atlas' obligations to B&R under this
              Agreement.

        In the event that B&R is not satisfied (in its sole discretion) with the
      results of its Review, B&R may provide Atlas with written notice that it
      does not wish to proceed with the negotiation of the Definitive Agreement
      an d B&R will be relieved of any continuing obligations under this
      Agreement. The Review to be conducted by B&R shall be at its sole cost and
      shall be completed not later than November 15, 1995. Atlas agrees to
      provide or make available to B&R and/or its consultants all available
      information currently in Atlas' possession (including that maintained by
      consultants to Atlas) which B&R reasonably requests in order to complete
      the Review.

         (2)  B&R hereby acknowledges that the obligation of Atlas to negotiate
      the Definitive Agreement is expressly contingent upon Atlas

 
      completing, in its sole opinion, a satisfactory hedging program for the
      Project.

    III.Contract Price and Unit Costs.  B & R has agreed to perform the Work at
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      the Project for a fee not to exceed Thirty One Million Five Hundred
      Thousand ($31,500,000.00) Dollars. The unit costs comprising such amount
      to perform the Work shall be apportioned approximately as set forth in the
      letter from B & R to Atlas dated September 11, 1995, attached hereto and
      incorporated herein by reference, and including revised mine plan
      assumptions specifically regarding a modified 40 foot drilling depth and
      adjustments as necessary to eliminate a third spread of mining equipment
      for intermittent mining of the Gold Ridge deposit, as discussed at the
      Meeting.

    IV. Loan Guarantee. B&R will provide a guarantee, in a form reasonably
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      satisfactory to the lender, for Project financing to Atlas of $5.0 Million
      Dollars. This financing will be available to Atlas at that point in time
      during the Project after which Atlas has expended approximately $5.5
      Million Dollars. Repayment of such financing shall commence not sooner
      than twenty-four months after commencement of the Work; provided that the
      full amount financed shall be repaid prior to completion of the Project.

    V. Security for the Guarantee.  Atlas will give B&R a security interest on
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      all of Atlas' interest in tangible real and personal property which
      constitutes the Gold Bar Properties and the Gold Bar mill, subject only to
      restrictions set forth in the Mining Venture Agreement dated July 26,
      1994, between Atlas and Rayrock Mines, Inc. and the rights to a percentage
      of throughput at the Atlas Gold Bar Mill granted to Granges Inc. pursuant
      to the Letter Agreement dated October 4, 1995, between Atlas and Granges
      Inc. B&R will exercise its rights in these properties only in the event of
      default under the terms of the Definitive Agreement and only to the extent
      reasonably necessary to satisfy the amount of such default. Upon complete
      satisfaction of all

 
      outstanding obligations owed B&R under the guarantee, B&R will release its
      lien on the collateral. Upon completion of the Review, B&R reserves the
      right to require additional security to reasonably satisfy collateral
      requirements of the guarantee.

    VI.Net Profits Interest.  B&R, as additional compensation and incentive to
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      perform the Work in an efficient manner and in consideration of the $5.0
      Million loan guarantee, shall be entitled to receive a twenty (20%)
      percent net profit (non-operating) royalty interest in the after tax cash
      flows (net of any principal and interest on financing for the Project)
      from the Project. Such royalty payments to B&R shall be paid monthly as a
      percentage of revenue from the Project less mining, milling, site specific
      general and administrative costs, capital depreciation, and any financing
      costs associated with the loan guarantee as set forth in Section IV above.
      The aggregate of royalty payments hereunder shall not be less than
      $500,000 nor exceed $1,500,000.

    VII. Miscellaneous Provisions.  The Parties agree that this Agreement may be
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      executed simultaneously in any number of counterparts, each of which shall
      be deemed an original, but all of which together shall constitute one and
      the same instrument. The Parties further agree that this agreement shall
      bind and inure to the benefit of the successors and assigns of the
      Parties; provided, however, that the Parties may not make any assignment,
      transfer, pledge or other disposition of this Agreement or any of their
      obligations, rights or interest hereunder without the prior written
      consent of the other Party and any such disposition not so consented to
      shall be void.

      Each Party represents and warrants that it has the requisite authority to
      execute this Agreement and that this Agreement is valid, binding and
      enforceable against it in accordance with its terms.

 
  Executed on this the 23rd day of October, 1995.

  ATLAS CORPORATION                      BROWN & ROOT, INC.


  BY: /s/ Gerald E. Davis                      BY: /s/ John E. Sole
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        Gary E. Davis                                  John E. Sole
        President                                     Vice President