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<br />LOCATION <br /> (county, DATES OF <br />MINE NAME quadrangle) OPERATION <br />Stroud Routt Co. <br /> Hayden <br /> NW, Sec. 18 <br /> T6N,R88W <br />Sun Routt Co. 1944-1968 <br /> Hayden Gulch <br />(Green?) SW,NE,Sec.12 <br /> T4N,R89W <br />Taylor Moffat Co. 1961 <br /> Round Bottom <br /> SE,NE,Sec.31 <br /> T6N,R91W <br />Tow Creek Routt Co. 1937-1943 <br />(Matthews) Milner <br /> NE,NE,Sec.17 <br /> T6N,R86W <br />Twenty Mile Routt Co. 1915-1922 <br /> Cow Creek <br /> NE,SW,Sec.l <br /> T5N,R86W <br />Twin Mesa Routt Co. 1922 <br /> Hayden <br /> Unknown <br />Key to unique features symbols: <br />Reclamation and/or plans -- Table Two <br />lists haz ard 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 />none <br />reported <br />6.0'-9.0' 11,312 <br />10.6' 731 <br />2.5' 1,417 <br />9.0' 1,850 <br />8.5' 539 <br />Z Multiple mining <br />* Mine opening information <br />S Subsidence features <br />F Mine fires <br />D Mine drainage <br />UNIQUE <br />FEATURES <br />After 1961, became <br />Wise Hill Strip <br />Burned coal bed <br />above mined bed <br />INFORMATION <br />SOURCES <br />1,7 <br />1,2,6 <br />1,2,6 <br />1,2,6 <br />1,2,6 <br />1,2,6 <br />29 <br />