| 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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| 1942 | Cortez | | Colliery | | 5 | | Lackawanna | Cortez Steam Coal Co. | 60,254 | | 0 | 60,314 | 171 | 16 | New operation. | | 1943 | Cortez | | Bank | | 3 | | Lackawanna | Cortez Steam Coal Co. | 16,303 | | 0 | 16,303 | 61 | 13 | Transferred from 5th District. |
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