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LOCATION <br /> (county, DATES OF <br />MINE NAME quadrangle) OPERATION <br />Atlas(No.l) Garfield Co. 1946-1950 <br />No.2 Newcastle 1954 <br />(No.3) SE,SW,Sec.21 1955-1958 <br /> T5S,R91W <br />Bear Creek Pitkin Co. 1969-1981 <br /> Placita <br /> Sec. 21 <br /> T10S,R89W <br />Bellodi Garfield Co. 1927-1934 <br />(Paradise) Stornr King <br /> NW,SE,Sec.24 <br /> T6S,R90W <br />Berglund Unknown 1919-1921,1934 <br />Black Raven Garfield Co. 1959-1963 <br /> Silt <br /> NW,NW,Sec.16 <br /> T5S,R92W <br />Central Garfield Co. 1899-1900 <br /> Newcastle <br /> Unknown <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 />4.9'-5.0' 1,960 <br />7.0' <br />6.0' <br />10.8' <br />22.0' <br />2.0',28.0' <br />3,000' 1,234,294 <br />1,540 <br />2,734 <br />13,205 <br />1,600 <br />Z Multiple mining zones <br />* Mine opening information <br />S Subsidence features <br />F Mine fires <br />D Mine drainage <br />UNIQUE <br />FEATURES <br />F <br />F(Closed due to <br />Fire),S <br />Z <br />INFORMATION <br />SOURCES <br />1,2,5,6 <br />1,2,6 <br />1,2,5,6 <br />2 <br />1,2,5,6 <br />2 <br />4 <br />