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Climax Molybdenum COLORADO OPERATIONS <br /> Henderson Mine and Mill <br /> A Freeport-McMoRan Company P.O.Box 68 <br /> P p y Empire,CO 80438 <br /> Phone(303)569-3221 <br /> Fax(303)569-2830 <br /> November 11, 2020 <br /> RECEIVED <br /> Sent Via Email and UPS#: 1Z804641NT98366007 <br /> "1 2020 <br /> Mr. Peter Hays <br /> Division of Reclamation Mining and Safety DIVISION OF RECLAMATION, <br /> 1313 Sherman St., Rm. 215 MINING AND WETY <br /> Denver, CO 80203 <br /> RE: Climax Molybdenum Company, Henderson Mill, Permit No. M-1977-342, Technical Revision <br /> 30, Mill-EPF 1.6—Seep Water Collection and Return System Improvements Closeout <br /> Documentation <br /> Dear Mr. Hays: <br /> Technical Revision (TR) No. 30 to the Henderson Mine Permit No. M-1977-342 was approved by the <br /> Division of Reclamation, Mining,and Safety on October 1,2018. This TR was for the Seep Water Collection <br /> and Return System Improvements that took place towards the end of 2018 and which were completed in <br /> the fall of 2019. As required, Henderson is submitting the attached as-built drawings and engineering <br /> certification for this project. <br /> Both the as-built drawings and the engineering certification have been stamped, signed, and dated by <br /> Trevor E. Mugele, a professional engineer working for W. W. Wheeler and Associates, Inc. who designed <br /> and oversaw the construction. <br /> If you need any additional information to complete your review of this request, please contact Miguel <br /> Hamarat at mhamaratafmi.com or 720-942-3255. <br /> Regards, <br /> Aaron Hilshorst <br /> Manager, Land&Water Resources <br /> Colorado <br /> Climax Molybdenum Company <br /> Attachments: <br /> - Seep Water Collection and Return System Improvement As-Build Drawings <br /> - Seep Water Collection and Return System Improvements Engineering Certification Statement <br /> cc: M. Hamarat, Climax <br />