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<br /> LOCATION <br /> (county, DATES OF <br />MINE NAME quadrangle) OPERATION <br />C.F.[. Garfield Co. 1900 <br /> Newcastle <br /> Unknown <br />Coal Basin Pitkin Co. 1900-1908 <br /> Placita (reopened in <br /> SW,SW,Sec.5 1973, idle <br /> Also Sec.6,7,8 as of August <br /> T10S,R89W 1982) <br />Coal Ridge Garfield Co. 1888-1892 <br /> Storm King <br /> NE,NE,Sec.6 <br /> T6S,R90W <br />Coryell Garfield Co. 1898-1909 <br /> Newcastle <br /> NE,NE,Sec.2 <br /> T6S,R91W also <br /> Secs. 31,32 <br /> T5S,R90W <br />balsas Garfield Co. 1943-1948 <br /> Storni King <br /> No specific location <br /> Sec.15,22, T6S,R90W <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 - HOGBACK REGION <br />SEAM OVERBURDEN <br />THICKNESS THICKNESS PRODUCTION <br />(IN FEET) (IN FEET) (IN TONS) <br />6.0' 11,491 <br />5.8'-8.0' <br />6.0' <br />3,000' 1,009,100 <br />(1908 total) <br />15.5' <br />6.0' <br />Z Multiple mining zones <br />* Mine opening information <br />S Subsidence features <br />D Mine drainage <br />46,244 <br />484,511 <br />1,866 <br />UNIQUE INFORMATION <br />FEATURES SOURCES <br />1,2 <br />1,2,6 <br />1,2,5,6 <br />Z, F, S 1,2,4,5,6 <br />1,2,6 <br />5 <br />