| 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 | Northwest | | Colliery | | 1 | Simpson 1 | Lackawanna | Maryde Coal Co. | 63,720 | | 0 | 64,100 | 272 | 154 | | | 1934 | Northwest | | Colliery | | 1 | Simpson 1 | Lackawanna | Maryde Coal Co. | 11,558 | | 0 | 12,233 | 62 | | |
|