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4- <br />Climax Molybdenum <br />A Freeport-McMoRan Company <br />July 21, 2010 <br />Via Email and UPS Tracking #: 1Z 804 847 03 6692 9240 <br />V <br />Mr. Allen C. Sorenson <br />Division of Reclamation Mining and Safety <br />1313 Sherman St., Rm. 215 <br />Denver, CO 80203 <br />COLORADO OPERATIONS <br />Henderson Mill <br />P.O. Box 68 <br />Empire, CO 80438 <br />Phone (303) 569-3221 <br />Fax (303) 569-2830 <br />RECEIVED <br />JUL 22 2010 <br />Division ota d Safety n, <br />Mining <br />Re: Permit M-1977-342, TRA1, Alternative Method to Salvage and Stockpile Toil <br />Dear Mr. Sorenson: <br />Climax Molybdenum Company (CMC) is pleased to provide the following information related to Technical <br />Revision 11 (TR-11) of the Henderson Reclamation Permit. CMC is in the process of reviewing its DRMS <br />permit files to make sure that all associated commitments have been met and that the related files, <br />correspondence and authorizations are complete. As is practicable, our goal is to obtain written <br />confirmation that obligations associated with each of our technical revision and permit amendment files <br />have been satisfied. We believe this will prove useful to both CMC and DRMS, and we appreciate your <br />assistance with this effort. <br />TR-11 provides an alternative method for salvaging and stockpiling top soil. Prior to TR-11, topsoil had <br />been salvaged utilizing a conventional shovel and truck hauling method. The alternative method entails <br />dozing and windrowing top soil around the tailing impoundment. This method has allowed CMC to <br />salvage the most desirable soil (the top 3 feet) from a greater area. <br />For your reference, we've also included the following attachments: <br />• Attachment 1 - February 21, 2001 memo to file documenting a phone conversation in which <br />DRMS granted CMC permission to utilize the alternative topsoil salvaging and stockpiling <br />method. <br />• Attachment 2 - CMC's formal request for DRMS approval of TR-11, dated August 28, 2001. The <br />document provides detail about the alternative method for managing topsoil. <br />As a part of our continuing effort to complete CMC's technical revision and permit amendment files, CMC <br />requests that DRMS provide written approval for TR-11.