DATES OF
<br />MINE NAME LOCATION OPERATION
<br />Cracker Jack NW, NE ,NW .1948-1958
<br />No. 2 Sec. 22
<br />(Cuba) T1S,R70W
<br />Crown SW,NW,SE 1919-1936
<br />(Old Crown) Sec. 14
<br /> T1S,R70W
<br />Crown (new) NE,NE,SE 1938-1955
<br /> Sec. 13
<br /> T1S,R70W
<br />Davidson NE,NE,SE 1888
<br /> Sec. 6
<br /> T1S,R69W
<br />Eldorado NE ,NE ,SW 1933-1939
<br /> Sec. 21
<br /> T1S,R70W
<br />Electric S/2,NW,SE 1898-1918
<br /> Sec. 4
<br /> T1S,R69W
<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 - ROULDER COUNTY
<br />SEAM OVERBURDEN
<br />THICKNESS THICKNESS PRODUCTION
<br />(IN FEET) (IN FEET) (IN TONS)
<br />7.0' 9,111
<br />4.2'-7.0' 270' 626,623
<br />7.0'-11.0' 618,413
<br />2.8'-3.5' 150'
<br />5.5' 34,489
<br />5.5' 210'+ 73,839
<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 />Mine filled with
<br />water (1957)
<br />INFORMATION
<br />SOURCES
<br />1,2,3,7,10
<br />1,2,3,7,10
<br />1,2,3,7,10
<br />1,2,3,7,10
<br />*,Reclamation plans 1,2,3,5,7,10
<br />S
<br />1,2,3,7,10
<br />-13-
<br />
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