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<br />y • • III IIIIIIIIIIIII III <br />/t/-~, Cripple Creek & Victor Gold Mining Company 999 <br />l\ A Joinl Venture -Pikes Peak Mining Company, Manager <br />~(l/ ~~~1~[ '•••/// Operations OHIce Englewood Office <br />l~~X~ ~v/ PO. Box 191, 2755 State Highway 67 5251 DTC Parkway, Suite 700, Englewood <br />Victor, Colorado 80880 Colorado 80111 <br />(719) 68&2977 • FAX (719) 68&3254 (303) 889-0700 • FAX (303) 889-0707 <br />October 6, 1994 <br />Mr. Berhan Keffelew <br />Environmental Protection Specialist <br />Colorado Department of Natural Resources <br />Division of Mines and Geology <br />Office of Mined Land Reclamation <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />,Fi.~~,~tFC <br />OCT 111 <br />~ ttOl mplt0l'd'S'S~z0i0~,Y <br />;,. .; <br />Reference: Cresson Project: Permit Number M-80-244: Confirmation of Suitability <br />of Economic Mill and Tunnel Waste Rock as Underdrain Material. <br />Dear Mr. Keffelew: <br />As you remember, the original "plan," as described in the permit, was to use waste rock from <br />the Economic Mill Area as underdrain rock. The material was shown to be inert, however; the <br />material was never tested using the point load method. That was because we switched to other <br />granodiorite as a result of not being able to disturb the Economic Mill Area until the BLM <br />authorized such disturbance. <br />In view of the fact that we are now able to work in the area and because the rock is in the <br />immediate vicinity of the underdrain location, Golder has performed the point load tests. The <br />results are attached. The results demonstrate that the material meets the criterion. The <br />criterion, identified in your letter of July 13, 1994, is 300 psi tensile strength. All samples <br />demonstrated tensile strengths well above this criterion. Therefore, we still (as we did in the <br />permit) plan on using the material as underdrain fill. <br />Should there be any questions, please call. We would plan on using this material quite soon in <br />view of the need to move it to complete the underdrain system and the proximity to the growing <br />trench in Arequa Gulch. <br />you fqr your assistance. <br />Affairs <br />Attachment: a/s <br />FII.E: CC~VSTtP.002 <br />