| 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 |
|---|
| 1870 | Swetland | | Colliery | Shaft | Middle | near Plymouth 1 | Luzerne | Northern Coal & Iron Co. | 0 | | 0 | 0 | | 107 | |
| 1871 | Plymouth | No. 4 | Colliery | Shaft 1 | Middle | near Plymouth | Luzerne | Northern Coal & Iron Co. | 0 | | 0 | 0 | | | |
| 1871 | Swetland | | Colliery | Shaft | Middle | near Plymouth | Luzerne | Northern Coal & Iron Co. | 0 | | 0 | 0 | | 118 | |
| 1872 | Swetland | | Colliery | Shaft 1 | Middle | Near Plymouth | Luzerne | Northern Coal & Iron Co. | 0 | | 0 | 0 | | | |
| 1875 | Plymouth | No. 4 | Colliery | Shaft | Middle | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 0 | | 0 | 0 | | | Not shipping coal. |
| 1876 | Plymouth | No. 4 | Colliery | Shaft | Middle | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 0 | | 0 | 0 | | | |
| 1878 | Plymouth | No. 4 | Colliery | Shaft 1 | Middle | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 60,000 | | 0 | 63,057 | 160 | 223 | |
| 1879 | Plymouth | No. 4 | Colliery | Shaft 1 | Middle | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 110,271 | | 0 | 114,126 | 210 | 244 | |
| 1880 | Plymouth | No. 4 | Colliery | Shaft | Middle | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 0 | | 0 | 74,836 | 152 | 247 | |
| 1881 | Plymouth | No. 4 | Colliery | Shaft | Middle | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 0 | | 0 | 101,287 | 188 | 233 | |
| 1882 | Plymouth | No. 4 | Colliery | Shaft | Middle | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 0 | | 0 | 113,342 | 232 | 302 | |
| 1883 | Plymouth | No. 4 | Colliery | Shaft | Middle | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 0 | | 0 | 140,831 | 223 | 316 | |
| 1884 | Plymouth | No. 4 | Colliery | Shaft 1 | Middle | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 0 | D&H / Lackawanna & Bloomsburg (DL&W) | 0 | 110,693 | 174 | 270 | |
| 1885 | Plymouth | No. 4 | Colliery | Shaft | 3 | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 0 | D&H / Lackawanna & Bloomsburg (DL&W) | 0 | 104,822 | 159 | 320 | |
| 1886 | Plymouth | No. 4 | Colliery | Shaft | 3 | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 124,099 | D&H / Lackawanna & Bloomsburg (DL&W) | 0 | 124,099 | 177 | 376 | |
| 1887 | Plymouth | No. 4 | Colliery | Shaft | 3 | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 173,801 | | 0 | 173,801 | 215 | 362 | |
| 1888 | Plymouth | No. 4 | Colliery | Shaft | 3 | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 174,812 | | 0 | 174,812 | 237 | 373 | |
| 1889 | Plymouth | No. 4 | Colliery | Shaft | 3 | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 163,182 | | 0 | 163,202 | 224 | 369 | |
| 1890 | Plymouth | No. 4 | Colliery | Shaft | 3 | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 106,560 | | 0 | 106,560 | 162 | 368 | |
| 1891 | Plymouth | No. 4 | Colliery | Shaft 1 | 4 | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 148,512 | | 0 | 148,512 | 189 | 402 | |
| 1892 | Plymouth | No. 4 | Colliery | Shaft 1 | 4 | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 181,076 | | 0 | 181,076 | 217 | 410 | |
| 1893 | Plymouth | No. 4 | Colliery | Shaft 1 | 4 | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 161,167 | | 0 | 161,167 | 216 | 431 | |
| 1894 | Plymouth | No. 4 | Colliery | Shaft 1 | 4 | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 150,851 | | 0 | 150,851 | 180 | 440 | |
| 1895 | Plymouth | No. 4 | Colliery | Shaft 1 | 4 | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 166,096 | | 0 | 172,912 | 201 | 422 | |
| 1896 | Plymouth | No. 4 | Colliery | Shaft 1 | 4 | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 151,923 | | 0 | 159,219 | 192 | 423 | |
| 1897 | Plymouth | No. 4 | Colliery | Shaft 1 | 4 | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 179,647 | | 0 | 187,849 | 215 | 456 | |
| 1898 | Plymouth | No. 4 | Colliery | Shaft 1 | 4 | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 182,808 | DL&W | 0 | 198,959 | 188 | 464 | |
| 1899 | Plymouth | No. 4 | Colliery | Shaft 1 | 4 | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 61,015 | D&H | 0 | 69,461 | 71 | 286 | |
| 1901 | Plymouth | No. 4 | Colliery | Shaft 1 | 4 | Plymouth | Luzerne | Delaware & Hudson Canal Co. | 0 | D&H | 0 | 0 | 192 | 345 | |
| 1902 | Plymouth | No. 4 | Colliery | Shaft 1 | 4 | Plymouth 1 | Luzerne | Delaware & Hudson Canal Co. | 0 | D&H | 0 | 0 | | 342 | |
| 1903 | Plymouth | No. 4 | Colliery | Shaft | 8 | Plymouth 1 | Luzerne | Delaware & Hudson Canal Co. | 388,598 | D&H | 0 | 433,142 | 239 | 355 | Coal from Plymouth No. 5 included. |
| 1904 | Plymouth | No. 4 | Colliery | Shaft | 8 | Plymouth 1 | Luzerne | Delaware & Hudson Co. | 0 | D&H | 0 | 0 | | 348 | Coal taken from Plymouth No. 5 Breaker. |
| 1905 | Plymouth | No. 4 | Colliery | Shaft | 8 | Plymouth 1 | Luzerne | Delaware & Hudson Co. | 0 | D&H | 0 | 0 | | 297 | Coal taken to the Plymouth No. 5 Breaker. |
Note 1: Added, does not appear in the mine inspection report.
