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DATES OF
<br />MINE NAME LOCATION OPERATION
<br />McGregor NW,SE,SE 1885-1895
<br /> Sec. 24
<br /> T1N,R69W
<br />Mile High SW,SE,SW 1913-1918
<br /> Sec. 27
<br /> T1N,R69W
<br />Mitchell C,E/2 1898-1920
<br />(New Mitchell) Sec. 35 1893-1897
<br /> T1N,R69W
<br />Model Unknown 1940
<br /> Sec. 10
<br /> T1S,R70W
<br />Monarch #1 NE,SW,SW 1902-1918
<br />(Joe Mitchell) Sec. 14 1901
<br /> T1S,R70W
<br />Monarch #2 C,N1/2,NW 1909-1947
<br />(Lucas) Sec. 28 1908
<br /> T1S,R69W
<br />Murray Slope NW,NW,SW
<br /> Sec. 15
<br /> T1S,R70W
<br />Never Sweat SE ,SE
<br /> Sec. 2
<br /> T1S,R70W
<br />Key to unique features symb ols:
<br />Reclamation and/or plans -- Table Two
<br />lists hazard abatement work
<br />+ Discrepancy between two sources
<br />TABLE ONE -BOULDER COUNTY
<br />SEAM OVERBURDEN
<br />THICKNESS THICKNESS PRODUCTION
<br />(IN FEET) (IN FEET) (IN TONS)
<br />4.5' 86,057
<br />5.5' 120'+ 16,286
<br />7.0'-14.0' 220' 1,295,229
<br />None reported
<br />6.5' 140'+ 1,224,881
<br />UNIQUE
<br />FEATURES
<br />S
<br />INFORMATION
<br />SOURCES
<br />1,2,3,7,10
<br />1,2,3,7,10
<br />1,2,3,7,10
<br />2,3,7,10
<br />1,2,3,7,10
<br />4.0'-8.0' 375' 3,271,494 S, Reclamation plans 1,2,3,5,7,.10
<br />None reported
<br />S
<br />1,2,7
<br />None reported
<br />Z Multiple mining
<br />* Mine opening information
<br />S Subsidence features
<br />F Mine fires
<br />D Mine drainage
<br />1,2,7
<br />-20-
<br />
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