Production:1830029c

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year DMM operator production cumulative opening depth seam thickness method days emp
1885 Joseph McBroom 1,200 surface 80
1886 1,200 surface #7 112
1887 5,000 surface 12 #7 6 100
1888 4,120
11,520
1889 John McBroom 2,400 surface
2,400
13,920