| 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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| 1940 | Blyss | | Mine | | 2 | | Lackawanna | Blyss Coal Co. | 664 | | 411 | 1,075 | 145 | 6 | Run of mine coal prepared at various breakers. | | 1941 | Blyss | | Mine | | 2 | | Lackawanna | Blyss Coal Co. | 240 | | 365 | 605 | 94 | 6 | |
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