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Coal Reserves of the Matewan
Quadrangle, Kentucky -A Coal Recoverability Study

U.S. Geological Survey Circular 9355


Table B-3.-Deep mine production rates by mining method

Mining method Production (tons/shift) per seam thickness
  24-42in 42-72in 72-96in >96 in
Continuous miner. 394 516 654 839
Longwall mining NA 1,609 2,451 3,575

NA Not applicable.

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