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Preparation characteristics of coal from Clarion County, Pa.

Preparation characteristics of coal from Clay, Gilmer, and Lewis counties, W. Va.

Preparation characteristics of coal from Beaver and Lawrence counties, Pa.

Preparation characteristics of coal from the Ohio coalfield

Published Year

• 1960-1969 (3)
• 1970-1979 (1)

Subject

• Coal preparation (4) *
• Coal--Ohio (1)
• Coal--Pennsylvania (1)
• Coal--West Virginia (1)

Author

• Zeilinger, John E. (4) *
• Deurbrouck, A. W. (1)

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