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LOCATION <br /> (county, <br />MINE NAME quadrangle) <br />Overland Garfield Co. <br />(Overland Cattle Creek <br />No. 2) SW,SW,Sec.16 <br /> T7S,R89W <br />Placita (Old) Pitkin Co. <br /> Placita <br /> NW,NE,Sec.6 <br /> T11S,R88W <br />Placita (New) Pitkin Co. <br />No. 1 Placita <br />(Hughs) NE,NE,Sec.6 <br /> T11S,R88W <br />Placita (New) Pitkin Co. <br />No. 2 Placita <br /> NE,NE,Sec.6 <br /> T11S,R88W <br />Pocahontas Garfield Co. <br />No. 1 Cattle Creek <br /> NW,SW,Sec.21 <br /> T7S,R89W <br /> TABLE ONE - HOGBACK REGION <br /> SEAM OVERBURDEN <br />DATES OF THICKNESS THICKNESS PRODUCTION UNIQUE INFORMATION <br />OPERATION (IN FEET) (IN FEET) (IN TONS) FEATURES SOURCES <br />1896-1898 21,095 1,2,4,6 <br />1899-1926 3.2'-3.7' 151,367 1,2,6 <br />1928-1945 3.7'-4.0' 75,163 1,2,6 <br />1926-1927 <br />1946-1951 4.0' 17,216 1,2,6 <br />1899-1907 <br />8.0'-11.4' 176,136 <br />Z Multiple mining zones <br />* Mine opening information <br />S Subsidence features <br />f Mine fires <br />D Mine drainage <br />Z 1,2,4,5,6 <br />Key to unique features symbols: <br />Reclamation and/or plans -- Table Two <br />lists hazard abatement work <br />+ Discrepancy between two sources <br />12 <br />