HYDRO25617 - Laserfiche WebLink

Home Browse Search

~::ry ~ ~ III IIIIIIIIIIIIIIII Cripple Creek & Vlctor Gold Mining Company 999 C C n Joint venture ~ Pikes Peak Mining Company, Manager ~T~ Operations Office Englewood Office ~X•~ P.O. Box 191, 2755 State Highway 67 P.O. Box 5078, 5251 DTC Parkway, Suite 700 Yidor, CO 80860 Englewood, CO 80155 (719) 689-2977 • FAX (719) 689-3254 (303) 889-0700 • FAX (303) 889-0707 October 26, 1996 SENT BY FACSIMILE & CERTIFIED RETURN RECEIPT REQUESTED P 289 926 292 Mr. Berhan Keffelew RECEIVED Environmental Protection Specialist Colorado Department of Natural Resources N~~ ~ ~ X996 Division of Mines and Geology Office of Mined Land Reclamation 1313 Sherman Street, Room 215 Division of rvunCram o usoiogq Denver. Colorado 80203 Reference: Cresson Project; Permit M-80-244: Your Inquiry About Total Sulfur Analyses. Dear Mr. Keffelew: During your inspection with other members of the Office of Mined Land Reclamation Staff, it was requested, and the Cripple Creek & Victor Gold Mining Company ("CC&V") agreed, that CC&V would provide to your office the results of total sulfur analyses performed on the uneconomic low-grade ore and overburden that has been removed from the Cresson Mine and placed in various overburden storage areas. This letter provides the information that completes that agreed-upon submission. CC&V performs total sulfur analyses on essentially every blast drill hole in rock containing less than the cutoff grade of gold. In the period starting with the beginning of Cresson mining through September 27, 1996, CC&V conducted about 31,775 measurements (which includes some duplicates) of total sulfur of overburden material. Of these analyses, 5,832 represent material placed in the Ironclad Mine. This material is placed on the Ironclad (or, later, the Globe Hill) Mine if it exceeds the total sulfur cutoff of 0.8 percent. The 5,832 measurements characterize 3,903,340 tons of low-grade and overburden material. The tonnage includes material with less than 0.8 percent total sulfur that has been included in a minable block. Therefore, some total sulfur analyses of material placed in the Ironclad Mine will be less than the cutoff percentage. The range of total sulfur levels in these 5,832 samples is from 0.0052 to 4.6152 percent (weight). The arithmetic average is 0.7993 percent total sulfur. • The material placed in locations other than the Ironclad Mine is currently characterized with 25,932 samples. These 25,932 samples apply to 18,709,957 tons of material. The range in total