AMENDMENT NO. 1 TO SETTLEMENT AND PURCHASE AND SALE AGREEMENT

Exhibit 4.43

AMENDMENT NO. 1 TO

SETTLEMENT AND PURCHASE AND SALE AGREEMENT

     This Amendment No. 1 to Settlement and Purchase and Sale Agreement (this “Amendment”) is entered into on April 15, 2009 and amends that certain Settlement and Purchase and Sale Agreement, dated March 6, 2009 (the “PSA”), by and among ASARCO LLC, a Delaware limited liability company; AR Silver ▇▇▇▇, Inc., a Delaware corporation; Copper Basin Railway, Inc., a Delaware corporation; ASARCO Santa ▇▇▇▇, Inc., a Delaware corporation; Sterlite (USA), Inc., a Delaware corporation; and Sterlite Industries (India) LTD, an Indian limited liability company. Capitalized terms used herein, but not otherwise defined, shall have the respective meanings ascribed to such terms in the PSA.

     WHEREAS, the parties desire to amend the PSA to extend the date by which the Bankruptcy Court shall have entered the Sterlite Agreed Order to avoid a termination right in favor of Purchaser pursuant to Section 13.1(h) thereof;

     NOW, THEREFORE, in consideration of the premises and agreements contained herein, and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, and intending to be legally bound hereby, the parties agree as follows:

     1. Section 13.1(h)(i) of the PSA is hereby amended to replace the date “April 15, 2009” with the date “April 22, 2009.”

     2. Except as set forth herein, all other terms of the PSA shall remain unchanged and in full force and effect.

     3. This Amendment shall be subject to all of the terms and provisions set forth in the PSA that apply to the PSA (and such terms and provisions shall apply to this Amendment) or to any amendments or modifications thereto, including, without limitation, Article XV thereof.

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     IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be executed by their respective officers thereunto duly authorized, as of the date first written above.