| 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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| 1895 | Westminster | | Colliery | Tunnel | 3 | Plains Twp. | Luzerne | Westminster Coal Co. | 14,848 | | 0 | 15,903 | 161 | 103 | | | 1896 | Westminster | | Colliery | Tunnel | 3 | Jenkins Twp. | Luzerne | Westminster Coal Co. | 23,733 | | 0 | 25,375 | 165 | 80 | | | 1897 | Westminster | | Colliery | Tunnel | 3 | Jenkins Twp. | Luzerne | Westminster Coal Co. | 2,707 | | 0 | 3,707 | | | | | 1940 | Westminster | | Washery | | 10 | | Luzerne | Westminster Washery | 2,172 | | 0 | 2,242 | 65 | 6 | New operation. | | 1960 | Westminster | | Bank | | 10 | | Luzerne | N. & R. Coal Co. | 0 | | 0 | 1,891 | 30 | 5 | All coal sold as is to local power plants. |
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