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STATE OF COLORADO <br />DIVISION OF RECLAMATION, MINING AND SAFETY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866-3567 <br />FAX: (303) 832-8106 <br />November 26, 2010 <br />Shins Duvall <br />Colorado Historical Society <br />The Colorado History Museum <br />Office of Archeology & Historical Preservation <br />1560 Broadway, Suite 400 <br />Denver, CO 80202 <br />Re: West Elk Mine (Permit No. C-1980-007) <br />Technical Revision No. 124 (TR-124) <br />Proposed Extensions of Longwall Panels E3 through E7 (CHS# 58454) <br />Dear Ms. Duvall: <br />COLORADO <br />D I V IS I ON OF <br />RECLAMATION <br />MINING <br />SAFETY <br />Enclosed is additional information regarding cultural sites and surveys, and potential surface <br />impacts of the proposed extensions of longwall panels. <br />The enclosed map shows the locations of the proposed longwall mine panel extensions and the <br />known structures in the area (the Minnesota Creek Ditch Rider's Cabin and the Deep Creek Ditch). <br />The enclosed copy of page 46 of Exhibit 60E from the mine operator's TR-124 submittal describes <br />cracks, tilting, and vertical displacement at the land surface that are expected from subsidence that <br />will be caused by the proposed longwall mining. The mine operator proposes no occupation of the <br />land surface over the longwall panels. <br />I asked the mine operator to provide or identify surveys which have been conducted in the area of <br />the proposed panel extensions. The operator directed me to the letter from your office, dated <br />October 11, 2007, regarding the coal lease where the extensions of longwall panels E3 through E7 <br />are proposed (see attached copy of the letter). <br />Please contact me if you have any questions or need additional information. <br />Sincerely, <br /> <br />Tom Kaldenbach <br />Environmental Protection Specialist <br />Office of <br />Mined Land Reclamation <br />Denver • Grand Junction • Durango <br />Office of <br />Active and Inactive Mines