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1 <br />~~I ~I~~I~~I~~~~~ ~I~ <br />STATE OF COLORADO <br /> <br />DIVISION OF MINERALS AND GEOLOGY <br />Depatlmenl of Natural Resources <br />131 3 Sherman Sr., Room 215 <br />Denver, Colorado 80203 <br />Phone: 1303) 866-3567 <br />FA%: (303) 832-0106 <br />DATE: October 28, 1996 <br />TO: Berhan Keffelew <br />FROM: Jim Pendleton j. _ 1~-~-~`°"''" <br />RE: Cripple Cre "k & ~ or Gold Company <br />°Your Request for Information on Run-of-Mine Ore" <br />(Permit No: M-80-244) <br />1~"" <br />~~'~ <br />DEPARTMENT OF <br />NATURAL <br />RESOURCES <br />Roy Romer <br />Governor <br />lames 5. Lochhead <br />6ecWive Dueclor <br />Michael B. Long <br />Division Director <br />I have reviewed Mr. Hardaway's letter bearing the above "Reference". I offer the <br />following comments for your consideration. <br />Page 2, ¶ 2 <br />Mr. Hardaway notes that the placement of non lime amended run-of-mine <br />ore is compensated for by adding lime to the crushed ore at a higher rate. <br />I would appreciate Mr. Hardaway's specifying how this compensation is <br />procedurally accomplished? Is it prorated throughout the pile? Is it done <br />on a truck load by truck load basis? How is it accomplished <br />operationally? Is the compensated material in immediate proximity to the <br />non lime amended run-of-mine ore placement? <br />Page 2, ¶ 7 <br />The comparative tests of "crushed ore" versus "run-of-mine" ore <br />percolation "break through" reported Mr. Hardaway a very convincing. The <br />run-of-mine appears significantly higher in transmissivity, which should <br />enhance eventual flushing detoxification. Who supervised and who <br />performed these telling tests? What were the specific testing and <br />monitoring protocols observed? Mr. Hardaway will have to submit <br />documentation of the tests to complete his informational submittal. <br />