| 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 |
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| 1883 | Enterprise | | Colliery | Shaft | Middle | Plains Twp. | Luzerne | A. Langdon | 0 | | 0 | 138,542 | 226 | 307 | | | 1884 | Enterprise | | Colliery | Shaft | Middle | Plains Twp. | Luzerne | A. Langdon | 0 | LV | 0 | 86,509 | 119 | 340 | | | 1885 | Enterprise | | Colliery | Shaft | 2 | Plains Twp. | Luzerne | A. Langdon | 37,049 | LV | 0 | 40,679 | 100 | 213 | | | 1886 | Enterprise | | Colliery | Shaft / Slope | 2 | Plains Twp. | Luzerne | A. Langdon | 90,085 | LV | 0 | 95,704 | 241 | 218 | | | 1887 | Belmont | | Colliery | Tunnel | 1 | Carbondale Twp. | Lackawanna | A. Langdon & Co. | 28,342 | New York, Lake Erie and Western Railroad | 0 | 29,688 | 98 | 153 | | | 1887 | Enterprise | | Colliery | Shaft / Slope | 2 | Plains Twp. | Luzerne | A. Langdon | 106,125 | | 0 | 112,417 | 252 | 311 | | | 1888 | Belmont | | Colliery | Tunnel | 1 | Carbondale | Lackawanna | A. Langdon | 49,748 | | 0 | 51,687 | 195 | 188 | | | 1888 | Enterprise | | Colliery | Shaft / Slope | 2 | Plains Twp. | Luzerne | A. Langdon | 130,520 | | 0 | 137,917 | 239 | 404 | | | 1888 | Grassy Island | | Colliery | Shaft / Tunnel | 1 | Winton | Lackawanna | A. Langdon | 75,227 | | 0 | 90,538 | 200 | 375 | | | 1889 | Enterprise | | Colliery | Shaft / Slope | 2 | Plains Twp. | Luzerne | A. Langdon | 124,872 | | 0 | 132,519 | 226 | 377 | | | 1889 | Grassy Island | | Colliery | Shaft / Drift | 1 | Winton | Lackawanna | A. Langdon | 85,918 | | 0 | 95,094 | 136 | 360 | |
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