| 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 |
|---|
| 1966 | Underwood | | Bank | | 10 | Olyphant 1 | Lackawanna | Rider Coal Co. | 6,368 | | 1,431 | 15,976 | 245 | 22 | Coal prepared at Ace, Penbrook and Pompey breakers. | | 1967 | Olyphant | | Colliery | | 10 | Olyphant | Lackawanna | Rider Coal Co. | 3,185 | | 362 | 7,328 | 92 | 22 | Coal prepared at Pompey Breaker. |
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