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TABLE ONE - SOMERSET AND GRAND MESA COAL FIELDS <br />MINE NAME LOCATION <br />(county, quadrangle) DATES <br />OF <br />OPERATION SEAM <br />THICKNESS <br />(in feet) OVERBURDEN PRODUCTION <br />THICKNESS (in tons) <br />(in feet) UNIQUE <br />FEATURES INFORMATION <br />SOURCES <br />Gelwick Delta County 1925-1939 4'4" 4,772 1,2,4 <br /> Bowie <br /> SE,NE <br /> Sec. 16, T13S,R91W <br />Girling Delta County 1935-1941? 1,5532 2 <br /> Dry Creek <br /> SE,NE <br /> Sec. 22, T13S,R93W <br />Green Valley Delta County 1916-1947 5-6' 164,462 F 1,2 <br />(Green Valley No. 1) Cedaredge <br /> NE ,SE <br /> Sec. 12, T13S,R95W <br /> also workings <br /> Sec. 7, T13S,R94W <br />Green Valley No. 2 Delta County 1949-1972 6' 146,135 1,2 <br /> Cedaredge <br /> NW,SE <br /> Sec. 12, T13S,R95W <br />Hawk's Nest No. 1 Gunnison County 1931-1970 7-8' 946,539 F 1,2 <br /> Somerset <br /> NE,SE Sec. 11, <br /> T13S,R90W <br /> also workings Sec. 12 <br />Hawk's Nest East Gunnison County 1975-1982 8-9` 2,102,908 G 1,2 <br />(Hawk's Nest No. 2) Somerset <br /> NW,SE <br /> Sec. 11, T13S,R90W <br />- 10 - <br />