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1. Shortwall coal mining in the United States.

Creator Personal:
Peng, Syd S., 1939-
Title:
Shortwall coal mining in the United States.
Call Number:
P12412
Date:
1976
Description:

Serial issue. Issued as: West Virginia University. Coal Research Bureau. Technical report, no. 119. "Prepared for publication in Coal Age, 81, 3, (March, 1976), 82-88."

Subject Topical:
Coal mines and mining--Safety measures., Coal mines and mining--Research., Mine roof bolting.
All:
Mine roof bolting., Coal mines and mining--Safety measures., Coal mines and mining--Research.