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COLORADO OPERATIONS <br /> ® Climax Molybdenum Henderson Mine and Mill <br /> A Freeport-McMoRan Company Empire, CO 80438 <br /> 68 <br /> RECEIVED Phone(303)569-3221 <br /> Fax(303)569-2830 <br /> JUL 2 0 2020 <br /> July 17, 2020 DIVISION OF RECLAMATION <br /> MINING AND SAFETY <br /> Sent by UPS#: 1Z 804 641 NT 9169 7636 <br /> Mr. Peter Hays <br /> Division of Reclamation Mining and Safety <br /> 1313 Sherman St., Rm. 215 <br /> Denver, CO 80203 <br /> RE: Climax Molybdenum Company, Henderson Mill, Permit No. M-1977-342, Technical Revision <br /> 32, Response to DRMS Geotechnical Stability Analysis Report <br /> Dear Mr. Hays: <br /> Climax Molybdenum Company — Henderson Mill (Henderson) received an emailed copy of the DRMS <br /> Geotechnical Stability Analysis Report on July 14, 2020. On July 16, 2020, Henderson submitted a request <br /> for an extension to the TR-32 review period to July 23, 2020 to allow time to respond to requests for further <br /> information detailed in the Report. This extension request was approved on July 17, 2020. <br /> Please find attached a memo from AECOM Technical Services which includes responses to each DRMS <br /> comment along with the requested supporting documentation. <br /> Please let me know if you have any questions or need any additional information at this time. <br /> Regards, <br /> Aaron Hilshorst <br /> Chief Environmental Engineer <br /> Henderson Operations <br /> Climax Molybdenum Company <br /> Enc. AECOM Memo <br /> Cc: M. Hamarat, Climax <br /> A. Parmet, Climax <br /> File <br />