EXHIBIT 10.2.3

THE DOE RUN RESOURCES CORPORATION
1801 PARK 270 DRIVE
ST. LOUIS, MISSOURI 63146

November 1,
2002

Jerry
L. Pyatt
c/o The Doe Run Resources Corporation
1801 Park 270 Drive
St. Louis, Missouri 63146



Dear
Mr. Pyatt:

This
letter, dated as of November 1 (the "Base Date"), 2002 sets forth the agreement between you and The Doe Run Resources Corporation, (the "Company") with respect to your Net
Worth Appreciation Benefit, intended to constitute additional incentive compensation to you as an employee of the Company. Upon your execution of this letter, any prior Net Worth Appreciation
Agreement or amendments thereto between you and DR Acquisition Corp or the Company shall terminate and all obligations pursuant to such agreement as amended shall cease.

1.Vesting.On the Base Date in 2005, provided that you have been continuously in the employ of the Company from
the date hereof through that date, you shall receive a Net Worth Appreciation Credit of .6% and on the Base Date in in each of the years 2006 and 2007 you shall receive an additional Net
Worth Appreciation Credit of .2%, provided that you have been continuously in the employ of the Company from the date hereof to the applicable the Base Date in for a maximum credit, if you remain in
the employ of the Company continuously through the Base Date in 2007, of 1% (the "Maximum Credit"). The aggregate number of Net Worth Appreciation Credits received on or prior to a given date shall be
hereinafter referred to as "Vested Credits". You shall not receive any credit unless you remain in the employ of the Company from the date hereof continually until the Base Date in 2005, and
thereafter you shall not receive credit for any partial year, provided that (a) if your employment terminates due to death or permanent disability preventing you from performing your usual
employment functions and duties ("disability") on or after the Base Date in 2003 and prior to the Base Date in 2005, you shall receive a credit of .2% if such termination is prior to the Base Date in
2004 and .4% if such termination is on or after the Base Date in 2004 and prior to the Base Date in 2005, and (b) if your employment terminates after the Base Date in 2005 and before the Base
Date in 2007, due to death or disability, you shall receive a credit of .2% for the partial year in which the termination takes place (in addition to all credits previously accrued).

2.Treatment of Matters in Calculation of Benefits.



3.Net Worth Appreciation Benefit.Upon the termination of your employment by the Company, other than for cause,
you shall be entitled to a net worth appreciation payment ("Payment") equal to (A) the product of the Vested Credits and the Net Worth Increment, as defined below, less (B) the product
of the Vested Credits and the Cumulative Income Statement Tax Difference (the calculation period shall end at the end of the Company's fiscal quarter immediately preceding your date of termination)
and excluding such Cumulative Income Statement Tax Difference to the extent equal to Cumulative Cash Flow Tax Difference utilized in calculating amounts payable under Paragraph 5(a). The "Net
Worth Increment" is the amount, if any, by which the consolidated net worth of the Company and its subsidiaries, as at the end of its fiscal quarter immediately preceding the date of your termination,
exceeds its consolidated net worth as of the date hereof, provided, however, that any increase in consolidated net worth resulting from a capital contribution to the Company or the sale of stock of
the Company shall be disregarded in calculating Net Worth Increment, and further provided that preferred stock of the Company and cash payments of dividends and payments in kind thereon shall be
treated as debt of the Company for purposes of calculating consolidated net worth. For clarity, it is understood that the Net Worth Increment will not include charges for interest on the restructured
debt of the Company to the extent not included as interest expense under GAAP as accounted for under FAS 15, nor will the Tax Differences include any benefit for such interest on such
restructured debt. The determination of the independent public accountants for the Company as to the Net Worth Increment, made in accordance with generally accepted accounting principles, consistently
applied, shall be conclusive on each of us. If there is no Net Worth Increment, no amount shall be payable. If your employment is terminated for cause, you shall not be entitled to receive any
Payment.

4.Payment.The Payment shall be payable to you (or your designee or estate) in 40 equal quarterly installments,
without interest, commencing three months after the termination of your employment, and at 3 month intervals thereafter. Notwithstanding any provision in this Agreement, the Company
shall not be required to pay you (i) any Payment, where the making of such Payment would violate any agreement between the Company and any lender of the Company, or (ii) in the event
that any agreement between the Company and any lender of the Company limits the aggregate amount that the Company may pay as bonuses, net worth appreciation payments, profit sharing payments or other
payments of similar nature ("Restricted Payments") during any period, any Payment in excess of your pro rata portion of the aggregate amount of applicable Restricted Payments which the Company is
permitted to pay. In the event that the Company is unable to make a Payment due to the preceding

sentence, the Company's obligation to make such Payment shall be deferred until such time that the Company is permitted to make such Payment pursuant to the preceding sentence.

5.Dividends; Sale of Substantially All of the Company's Stock or Assets.



6.Condition Precedent.The Company's obligation to make the Payment to you shall be conditioned on your
faithful adherence to your employment arrangements with the Company and on your refraining from engaging, during the period over which such payments are to be made to you, directly or indirectly in
any activity which is competitive with the business engaged in by the Company at the date of termination of your employment. If you do engage in any such competitive activities, then we shall no
longer be obligated to make any payments to you hereunder.

7.Notice.Any notices to be sent pursuant hereto shall be sent by hand, certified or registered mail or
overnight service to you, at the address indicated above and a copy to The Renco Group, Inc. at 30 Rockefeller Plaza, New York, NY 10112, 42nd floor, to the attention of Ira Leon
Rennert, or to any other address which the Company or Renco may designate by notice in writing.

Please
confirm that the foregoing correctly sets forth our full agreement with respect to your net worth appreciation benefit by signing and returning the enclosed copy of this letter.

|                                |  | Very truly yours,                                        
|------------------------------- |  | ---------------------------------------------------------
|                                |  | The Doe Run Resources Corporation.                       
|                                |  | /s/IRA LEON RENNERTIra Leon Rennert
Chairman of the Board
|Accepted and Agreed to:         |  |                                                          
|/s/JERRY L. PYATTJerry L. Pyatt |  |                                                          



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