| 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 |
|---|
| 1941 | Kosar | | Mine | | 2 | | Lackawanna | Kosar Coal Co. | 657 | | 21 | 678 | 40 | 7 | New operation. | | 1942 | Kosar | | Mine | | 2 | | Lackawanna | Kosar Coal Co. | 1,601 | | 1,168 | 2,769 | 238 | 13 | New operation. | | 1943 | Kosar | | Mine | | 1 | | Lackawanna | Kosar Coal Co. | 390 | | 2,610 | 3,000 | 276 | 10 | Run of mine coal. Transferred from District 2. | | 1944 | Kosar | | Mine | | 1 | | Lackawanna | Kosar Coal Co. | 3,301 | | 0 | 3,301 | 243 | 8 | Run of mine coal. | | 1945 | Kosar | | Mine | | 1 | | Lackawanna | Kosar Coal Co. | 600 | | 732 | 1,332 | 133 | 7 | Run of mine coal. | | 1946 | Kosar | | Mine | | 1 | Mayfield 2 | Lackawanna | Kosar Coal Co. | 2,045 | | 0 | 2,045 | 200 | 6 | Coal prepared at B.& D. and Waddell breakers. |
|