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Found 3 dataset(s) matching "coal tonnage".
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These are shapefiles and polygon coverages that contain numerous attributes of information on coal in the Calico and A-sequences of the Upper Cretaceous Straight Cliffs Formation in the...
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This is a point coverage containing 12 years (1984 through 1995) of coal mining history in the Colorado Plateau coal assessment study area. This layer was derived from the Mine Safety and Health...
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Coal Production - Closed Years Only Data Starting: 2012 By Calendar Year, Mine Type