| 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 |
|---|
| 1908 | Inman | No. 21 | Colliery | Shaft | 9 | | Luzerne | Lehigh & Wilkes-Barre Coal Co. | 0 | | 0 | 0 | | | Sinking shaft |
| 1909 | Inman | No. 21 | Colliery | Shaft | 9 | | Luzerne | Lehigh & Wilkes-Barre Coal Co. | 0 | CNJ | 0 | 0 | | | Sinking shaft |
| 1911 | Inman | No. 21 | Colliery | Shaft | 9 | | Luzerne | Lehigh & Wilkes-Barre Coal Co. | 0 | CNJ | 0 | 0 | | | Sinking shaft |
| 1913 | Inman | No. 21 | Mine | Shaft | 9 | | Luzerne | Lehigh & Wilkes-Barre Coal Co. | 0 | CNJ | 0 | 0 | | | New mine. |
| 1914 | Inman | No. 21 | Colliery | Shaft | 9 | | Luzerne | Lehigh & Wilkes-Barre Coal Co. | 0 | CNJ | 0 | 0 | | 21 | Sinking shaft. |
| 1915 | Inman | No. 21 | Colliery | Shaft | 9 | | Luzerne | Lehigh & Wilkes-Barre Coal Co. | 0 | CNJ | 0 | 0 | | | Developing. |