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•. ~ <br />LOCATION <br /> (county, DATES OF <br />MINE NAME quadrangle) OPERATION <br />Wise Hill Moffat Co. 1977 <br />No. 9 Round Bottom <br /> NW,NW,Sec.32 <br /> T6N,R91W <br />Wise Hill Moffat Co. 1939-1941 <br />Pinnacle Round Bottom <br /> SE,NE,Sec.6 <br />(Fields) T5N,R91W 1935 <br />Wonder Valley Routt Co. 1938 <br /> Milner <br /> No specific location <br /> W/2,NW,Sec.6 ,T5N,R86W <br />Yampa and Routt Co. 1920-1925 <br />Roman Milner <br />NW,NW,SE <br />Sec. 21 <br />T6N,R86W <br />also Sec.29 <br />Yampa Valley Routt Co. 1911-1917 <br />Nos. 1,2,6 Oak Creek <br />NE,Sec. 1 <br />T3N,R86W <br />Key to unique features symbols: <br />Reclamation and/or plans -- Table Two <br />lists hazard abatement work <br />+ Discrepancy between two sources <br />TABLE ONE - YAMPA VALLEY <br />SEAM OVERBURDEN <br />THICKNESS THICKNESS PRODUCTION <br />(IN FEET) (IN FEET) (IN TONS) <br />10.0' 100'-1000' 23,495 <br />7.5'-16.0' <br />1,050 <br />50 <br />8.3' 300' 50,475 <br />5.5' <br />504,923 <br />Z Multiple mining zones <br />* Mine opening info rniation <br />S Subsidence features <br />F Mine fires <br />D Mine drainage <br />UNIQUE <br />FEATURES <br />INFORMATION <br />SOURCES <br />1,2,6 <br />1,2,6 <br />1,2,6 <br />1,2,6 <br />1,2,6 <br />33 <br />