| 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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| 1948 | Slenska | | Stripping | | 1 | Jessup 2 | Lackawanna | Slenska Bros. | 2,316 | | 0 | 2,316 | 38 | 6 | Coal prepared at Bolands Breaker. Discontinued operation in October. | | 1949 | Slenska | | Stripping | | 1 | Jessup 2 | Lackawanna | Slenska Bros. | 7,025 | | 421 | 7,446 | 172 | 5 | Discontinued operation in September. Coal prepared at Bolands and E&A breakers. |
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