| 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 |
|---|
| 1929 | Plymouth | | Colliery | | 12 | Plymouth 1 | Luzerne | Plymouth Mining Co. | 5,000 | D&H | 0 | 7,000 | 268 | 18 | | | 1930 | Plymouth | | Colliery | | 12 | Plymouth 1 | Luzerne | Plymouth Mining Co. | 6,000 | D&H | 0 | 15,754 | 243 | 15 | | | 1931 | Plymouth | | Colliery | | 12 | Plymouth 1 | Luzerne | Plymouth Mining Co. | 6,500 | | 0 | 7,400 | 225 | 15 | | | 1932 | Plymouth | | Stripping | | 12 | Plymouth 1 | Luzerne | Plymouth Mining Co. | 8,422 | | 0 | 9,080 | 229 | 16 | | | 1933 | Plymouth | | Stripping | | 12 | Plymouth 1 | Luzerne | Plymouth Mining Co. | 8,391 | | 0 | 11,355 | 225 | 17 | | | 1934 | Plymouth | | Stripping | | 12 | Plymouth 1 | Luzerne | Plymouth Mining Co. | 7,147 | | 0 | 8,944 | 226 | 21 | | | 1935 | Plymouth | | Stripping | | 12 | Plymouth 1 | Luzerne | Plymouth Mining Co. | 5,730 | | 0 | 8,667 | 180 | 23 | | | 1936 | Plymouth | | Stripping | | 12 | Plymouth 1 | Luzerne | Plymouth Mining Co. | 3,180 | | 0 | 3,885 | 180 | 20 | | | 1937 | Plymouth | | Colliery | | 12 | Plymouth 1 | Luzerne | Plymouth Mining Co. | 0 | | 0 | 0 | 168 | 18 | | | 1938 | Plymouth | | Mine | | 12 | Plymouth 1 | Luzerne | Plymouth Mining Co. | 0 | | 0 | 21,365 | 258 | 11 | Run of mine coal prepared at Nottingham. | | 1939 | Plymouth | | Colliery | | 12 | Plymouth 1 | Luzerne | Plymouth Mining Co. | 0 | | 0 | 8,770 | 150 | 19 | Coal shipped run of mine to Nottingham Breaker. Prepared at Lance Breaker. | | 1939 | Plymouth | | Stripping | | 12 | Plymouth 1 | Luzerne | Plymouth Mining Co. | 0 | | 0 | 12,398 | 150 | 10 | Coal shipped run of mine to Nottingham Breaker. Prepared at Lance Breaker. | | 1942 | Davis | | Mine | Slope 1 | 12 | | Luzerne | Plymouth Mining Co. | 10,168 | | 0 | 10,168 | 232 | 12 | |
|