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Carbonizing properties and petrographic composition of Pocahontas no. 3-bed coal from Buckeye no. 3 mine, Wyoming County, W. Va., and of Pocahontas no. 4-bed coal from no. 4 mine, Raleigh County, W. Va.

Carbonizing properties and petrographic composition of Lower Banner-bed coal from Keen Mountain mine, Buchanan County, Va. :and the effect of blending this coal with Pittsburgh-bed (Warden Mine) coal

Carbonizing properties and petrographic composition of Upper Freeport coal from Morgantown District, Monongalia County, W. Va. :and of Lower Freeport coal from eastern Indiana County, near Cambria County, Pa.


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