Production:91830123

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year DMM operator address production cumulative opening depth seam thickness method days emp
1889 Spickard Brothers Danville 3,100 surface 180
3,100
1890 Benjamin F. Spickard Danville 160 42
160
1891 E. Gray & Co. Danville 3,780 surface 9 #7 6 130
1892 Danville 3,200 surface 8 #7 6 140
6,980
1893 John Burton Danville 3,200 surface 12 #7 6.5 100
3,200
13,440