| 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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| 1926 | Marshwood | | Colliery | | 6 | Olyphant 1 | Lackawanna | Public Services Coal Co. | 33,900 | | 0 | 33,900 | 211 | 160 | | | 1927 | Marshwood | | Colliery | | 6 | Olyphant 1 | Lackawanna | Public Services Coal Co. | 50,767 | Erie | 0 | 51,315 | 109 | 177 | | | 1928 | Marshwood | | Colliery | | 6 | Olyphant 1 | Lackawanna | Public Services Coal Co. | 33,958 | Erie | 0 | 35,456 | 153 | 232 | |
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