| 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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| 1968 | Ziffenblatt | | Cleaning Plant | | 5 | Duryea | Luzerne | G. M. C. Energy Fuels | 0 | | 0 | 0 | 207 | 4 | | | 1969 | Ziffenblatt | | Cleaning Plant | | 5 | Duryea | Luzerne | G. M. C. Energy Fuels | 0 | | 0 | 0 | 187 | 5 | | | 1970 | Ziffenblatt | | Cleaning Plant | | 5 | Duryea | Luzerne | G. M. C. Energy Fuels | 0 | | 0 | 0 | 142 | 3 | |
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