Production:91830266
| year | DMM | company | production | cumulative | type | depth | seam | thickness | method | days | emp |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1911 | John Mitchell | 1,600 | shaft | 40 | #7 | 6 | RP | ||||
| 1912 | 500 | 2,100 | shaft | 40 | #7 | 5.83 | RP | 120 |
| year | DMM | company | production | cumulative | type | depth | seam | thickness | method | days | emp |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1911 | John Mitchell | 1,600 | shaft | 40 | #7 | 6 | RP | ||||
| 1912 | 500 | 2,100 | shaft | 40 | #7 | 5.83 | RP | 120 |