| 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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| 1920 | Inner-City | | Washery | | 12 | Plymouth 1 | Luzerne | Inner-City Fuel Co. | 62,000 | CNJ | 0 | 62,222 | 263 | 45 | Formerly Plymouth Company. | | 1921 | Inner-City | | Washery | | 12 | Plymouth 1 | Luzerne | Inner-City Fuel Co. | 7,625 | CNJ | 0 | 8,052 | 55 | 44 | |
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