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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1944 | Blue Diamond | | Colliery | | 10 | | Sullivan | Blue Diamond Coal Co. | 2,477 | | 0 | 2,766 | 64 | 16 | Preparation plant tonnage is bank coal. | 1945 | Blue Diamond | | Colliery | | 10 | | Sullivan | Blue Diamond Coal Co. | 31,709 | | 0 | 34,017 | 198 | 15 | | 1946 | Blue Diamond | | Bank | | 10 | Mildred 2 | Sullivan | Blue Diamond Coal Co. | 21,672 | | 0 | 21,787 | 196 | 10 | | 1947 | Blue Diamond | | Breaker | | 10 | Mildred 2 | Sullivan | Blue Diamond Coal Co. | 2,862 | | 0 | 2,912 | 59 | 10 | Bank coal. |
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