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Climax Molybdenum <br />A Freeport-McMoRan Company <br />September 18, 2015 <br />Via Email and UPS Priority Mail <br />Mr. Peter Hays <br />Division of Reclamation, Mining and Safety <br />1313 Sherman St., Rm. 215 <br />Denver, CO 80203 <br />COLORADO OPERATIONS <br />Henderson Mill <br />19302 County Road 3 <br />Parshall, CO 80468 <br />Phone (303) 569-3221 <br />5Li L 2015 <br />DIVISION OF i a',-ULAMATION <br />MINING AND SAFETY <br />Re: Follow-up Notice for Mill Tailing Delivery Line Release, Permit No. M-1977-342 <br />Mr. Hays: <br />Henderson Mill is providing this written follow-up notice to a phone call made to you on September 11, <br />2015 pursuant to Rule 8.1 and 8.2 of the DRMS Rules and Regulations. <br />This notice is regarding process water which escaped from a hole which developed in the tailing delivery <br />line (hereafter referred to as the TDL). The TDL is designated as an environmental protection facility in <br />Henderson's Environmental Protection Plan. The release is believed to have begun just after 7:30AM the <br />morning of September 11, 2015. It is believed to have lasted a very short period of time based on reports <br />from the pond operator who discovered the leak. While the Henderson Mill was transitioning into shut <br />down, tailing from the line was being flushed with process water. The pond operator reported a wet area <br />on the berming which covers the TDL. Upon investigation he discovered that water was seeping out of <br />the tailing delivery line between the piping and an anchor block attached to the line. The flow rate <br />reported at that point was "a few gallons per minute", later clarified as up to 4gpm at the height of flow. <br />The discharge material was predominantly water with some tailing material in it. <br />(a) After discovering the issue, the pond operator immediately had the flow in the line <br />diverted to the emergency cutout structure, which stopped the flow from the release point <br />within a short time. <br />(b) Mill process water flow did not adversely impact human health, property or the <br />environment. All material associated with this event flowed along the TDL access road <br />and through a culvert directly onto the No. 3 Dam beach. <br />(c) The contact person for this event is: <br />Tim Haynes <br />19302 County Road 3, <br />Parshall, CO 80468 <br />Phone: 720-942-3518 <br />timothy haynes(cDfmi.com <br />