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r <br /> Kr_QwVED COLORADO OPERATIONS <br /> Climax Molybdenum Henderson Mine and Mill <br /> P.O. Box 68 <br /> A Freeport-McMoRan Company SEP 1 F 2021 Empire, CO 80438 <br /> Phone(303)569-3221 <br /> DMSION OF RECLAMATION Fax(303)569-2830 <br /> MINING AND SAFETY <br /> September 9, 2021 <br /> Sent Via Email and UPS#: 1Z8046410395122348 <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, Mill-EPF 1.4—3-Dam Buttress Construction Phase 2, As-Built Drawings Submittal <br /> Dear Mr. Hays: <br /> Technical Revision (TR) No. 32 to the Henderson Mine Permit No. M-1977-342 was approved by the <br /> Division of Reclamation, Mining, and Safety on July 20, 2020. This TR was for the construction of 3-Dam <br /> buttress phase 2 completed in the fall of 2020. As required, Henderson is submitting the attached as-built <br /> drawings and engineering certification for this project. <br /> Both the as-built drawings and the engineering certification have been stamped, signed, and dated by Lisa <br /> Yenne, a professional engineer working for AECOM who designed and oversaw the construction. <br /> If you need any additional information to complete your review of this request, please contact me with any <br /> questions (gniggele((Dfmi.com or 720-942-3631). <br /> Regards, <br /> Geoff Niggeler <br /> Chief Environmental Engineer <br /> Henderson Operations <br /> Climax Molybdenum Company <br /> Attachments: <br /> - 3-Dam Buttress Phase II As-Build Drawings <br /> - 3-Dam Buttress Phase II Engineering Certification Statement <br /> cc: M. Hamarat, Climax <br />