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Mr. Peter Hays, DRMS <br />February 26, 2013 <br />If you have any additional questions or concerns, please feel free to contact me at 303 - 569 -3221, ext. <br />2284 or Bryce Romig at ext. 1204. <br />Sincerely, <br />Tim Haynes <br />Sr. Environmental Engineer <br />Climax Molybdenum Company <br />Henderson Mill <br />Attachments: Photos # 1 -6 <br />pipe. Contraction of HDPE piping down gradient of an anchor block directly below the <br />joint in question may have had some influence. <br />The day following the event, flows were diverted from the TDL and routed through the #1 <br />Cutout to alleviate any pressure on the joint while a concrete patch was poured over the <br />section of piping where the failure occurred. The concrete was allowed to set before <br />tailing flow was again routed through this section of piping. As of February 26, there is no <br />sign of perpetuated flow from the joint and no sign of flow in areas adjacent to this section <br />of piping. <br />At the time of this event, Henderson had already planned a project for the spring /summer <br />of 2013, which would exchange RCP piping in this area with HDPE piping. This project <br />should further eliminate leak potential of this type. <br />CC (via email): <br />B. Romig, Climax <br />M. Hamarat, Climax <br />S. Deely, Freeport - McMoRan <br />N. Hall, Freeport- McMoRan <br />L. Decker, Gallagher & Kennedy <br />Page 2 <br />