Stephen Seminuk
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Year
Operation Name
Number
Type
Opening
District
City
County
Company Name
Railroad Shipments (tons)
Railroad to Mine
Truck Shipments (tons)
Total Production (tons)
Days Worked
Employees
Notes
1933
Black Diamond
Colliery
1
Lackawanna
Stephen Seminuk
0
Truck
1
2,372
2,372
47
14
Note 1: Added, does not appear in the mine inspection report.