| 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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| 1937 | Ruby | | Mine | | 2 | | Lackawanna | Ruby & Ferelli Coal Co. | 1,482 | | 0 | 1,482 | 76 | 10 | |
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