| 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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| 1939 | Diamond | | Mine | | 4 | | Lackawanna | Duryea Anthracite Co. | 0 | Truck 1 | 29,130 | 29,130 | 162 | 40 | New mine. | | 1940 | West Mountain | | Mine | Slope | 4 | | Lackawanna | Duryea Anthracite Co. | 39,759 | | 0 | 39,759 | 207 | 46 | | | 1941 | West Mountain | | Mine | Slope | 4 | | Lackawanna | Duryea Anthracite Co. | 60,911 | | 0 | 60,911 | 235 | 48 | | | 1942 | West Mountain | | Mine | Slope 1 | 4 | | Lackawanna | Moffat Coal Co. | 49,582 | | 1,948 | 64,148 | 287 | 49 | | | 1943 | West Mountain | | Mine | Slope 1 | 3 | | Lackawanna | Moffat Coal Co. | 58,303 | | 342 | 73,197 | 281 | 48 | Transferred from 4th District. | | 1944 | West Mountain | | Mine | Slope | 3 | | Lackawanna | Moffat Coal Co. | 45,659 | | 249 | 59,726 | 312 | 38 | | | 1945 | West Mountain | | Mine | Slope | 3 | | Lackawanna | Moffat Coal Co. | 41,695 | | 0 | 55,104 | 285 | 49 | | | 1946 | West Mountain | | Mine | | 3 | | Lackawanna | Moffat Coal Co. | 47,844 | | 0 | 56,192 | 287 | 39 | Coal prepared at Baker Breaker, 2nd District. | | 1947 | West Mountain | | Mine | Slope | 3 | | Lackawanna | Moffat Coal Co. | 35,781 | | 0 | 39,540 | 292 | 38 | Coal prepared at Baker and Moffat breakers. | | 1948 | West Mountain | | Mine | Slope | 3 | | Lackawanna | Moffat Coal Co. | 8,456 | | 0 | 9,628 | 100 | 40 | Coal prepared at Moffat Breaker. | | 1949 | West Mountain | | Mine | | 3 | Scranton 2 | Lackawanna | West Slope Coal Co. | 31,451 | | 0 | 34,694 | 207 | 50 | Coal prepared at Moffat Breaker. | | 1950 | West Mountain | | Mine | | 3 | Scranton 2 | Lackawanna | West Slope Coal Co. | 53,684 | | 0 | 59,926 | 221 | 71 | Coal prepared at Baker Breaker. | | 1951 | West Mountain | | Stripping | | 3 | | Lackawanna | Moffat Coal Co. | 105 | | 0 | 118 | 23 | 4 | Coal prepared at Baker and Moffat breakers. | | 1951 | West Mountain | | Mine | | 3 | Scranton 2 | Lackawanna | West Slope Coal Co. | 46,995 | | 0 | 52,500 | 198 | 77 | Coal prepared at Baker and Moffat breakers. | | 1952 | West Mountain | | Mine | | 3 | Scranton 2 | Lackawanna | West Slope Coal Co. | 11,472 | | 0 | 12,407 | 119 | 50 | Coal prepared at Baker and Moffat breakers. | | 1957 | West Mountain | | Mine | | 2 | | Lackawanna | West Mountain Coal Co. | 0 | | 0 | 442 | 145 | 3 | Mine employing less than five persons. | | 1963 | West Mountain | | Stripping | | 1 | | Lackawanna | Slenska Coal Co. | 91 | | 17 | 408 | 30 | 5 | Coal prepared at Penbrook and Ace breakers. | | 1964 | West Mountain | 75-1A1 | Stripping | | 1 | | Lackawanna | Slenska Coal Co. | 171 | | 265 | 854 | 154 | 4 | Coal prepared at Raymond, Pompey, Loree and Huber breakers. |
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