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• <br /> 4c), <br /> Climax Molybdenum COAHenderson Mine and Mill <br /> A Freeport-McMoRan Company P.O. Box 38 <br /> p /� y Empire, CO 80438 <br /> Phone (303) 569-3221 <br /> Fax (303) 569-2830 <br /> March 17th, 2020 <br /> Sent via UPS Certified Mail Tracking: 1Z8046410294459195 RECEIVED <br /> Mr. Peter Hays MAR 2 0 2020 <br /> Environmental Protection Specialist <br /> 1313 Sherman Street, Room 215 DIVISION OF RECLAMATION <br /> Denver, CO 80203 MINING AND SAFETY <br /> Re: Climax Molybdenum Company, Henderson Mine, Permit No. M-1977-342 <br /> Technical Revision No. 31, Additional 3 Dam Seepwater Return Line Cleanout <br /> Ports <br /> Dear Mr. Hays, <br /> Technical Revision (TR) No. 31 to the Henderson Mine Permit No. M-1977-342 was approved by <br /> the Division of Reclamation, Mining and Safety on July 10, 2019. This TR is for the installation of <br /> Additional 3 Dam Seepwater Return Line Clean-out Ports at the Henderson Mill. As required, <br /> Climax Molybdenum Company is submitting the enclosed as-built drawings and engineering <br /> certification for this project. As-builts are included in Attachment 1. A certification statement by <br /> our Chief Engineer is included in Attachment 2. <br /> If you have any additional questions, concerns or require more information regarding this project, <br /> please feel free to contact me at (720) 942-3480 or Miguel Hamarat at (720) 942-3255. <br /> Regards, <br /> Amber Parmet <br /> Senior Environmental Engineer <br /> Climax Molybdenum Company <br /> Henderson Operations <br /> Attachments: <br /> 1. 3 Dam Seepwater Return Line Cleanout As-Builts <br /> 2. 3 Dam Seepwater Return Line Cleanout Certification Statement <br /> cc: M. Hamarat (CMC), email <br /> A. Hilshorst (CMC), email <br />