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STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1313 Sherman St., Room 275 <br />Denver, Colorado 80203 <br />Phone: (303) 866-3567 <br />FAX: (303) 832-8106 <br />June 24, 2002 <br />DIVISION O F <br />MINERALS <br />GEOLOGY <br />RECLAMATION <br />MINING•SAFETY <br /> <br />Mr. Timothy Pierce bill Owens <br />cnvernor <br />Cotter Corporation Greg E. Walther <br />P.O. BOX 1017 Executive Director <br />Golden, C~ 80402 Ronald W. Cattany <br /> Acting Division Director <br />Re; Schwartzwalder, Technical Revision Approval, Permit No. M-1977-300, Revision No. TR-8 <br />Deaz Mr. Pierce: <br />On June 21, 2002 the Division of Minerals and Geology approved [he Technical Revision application submitted [o <br />the Division on May 22, 2002, addressing the following: <br />Revise method for final sealing and abandonment of ventilation shafts. <br />Please provide a revised figure E-1 depicting a typical cross-sectional drawing of the plug. The plug should be <br />installed in accordance with Colorado Inactive Mined Land Program specifications to the extent possible, but in no <br />case shall it be less than the manufacturer's specifications. <br />The terms of the Technical Revision No. 8 approved by the Division aze hereby incorporated into Permit No. M- <br />1977-300. All other conditions and requirements of Permit No. M-1977-300 remain in full force and effect. <br />If you have any questions, please contact me. <br />Sint re , <br />~- <br />Anthony J. Waldron <br />i~J 99~,,_ <br />Environmental Protection Specialist <br />M:bss\Tdd\TEMPUI-AV-OI M79A3~ AJW_20020624_112418 AM.doc <br />