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• A coal-fired water pump
• Preparation characteristics of coal from Clarion County, Pa.
• Preparation characteristics of coal from Beaver and Lawrence counties, Pa.
• Preparation characteristics of coal from Clay, Gilmer, and Lewis counties, W. Va.
• Preparation characteristics of Pennsylvania anthracite from the Kidney Seam, northern field
• Preparation characteristics of coal from the Ohio coalfield
• Physical desulfurization of fine-size coals on a spiral concentrator