Production:91830347
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year | DMM | company | production | cumulative | type | depth | seam | thickness | method | days | emp |
---|---|---|---|---|---|---|---|---|---|---|---|
1920 | Bowker & Stueble | 1,000 | 160 |
year | DMM | company | production | cumulative | type | depth | seam | thickness | method | days | emp |
---|---|---|---|---|---|---|---|---|---|---|---|
1920 | Bowker & Stueble | 1,000 | 160 |