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You searched for: Digital Content No Digital Content Remove constraint Digital Content: No Digital Content Subject Topical Coal mines and mining--Research. Remove constraint Subject Topical: Coal mines and mining--Research.
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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--Research., Coal mines and mining--Safety measures., Mine roof bolting.
All:
Coal mines and mining--Research., Coal mines and mining--Safety measures., Mine roof bolting.

2. Research needs in coal mining.

Creator Personal:
Leonard, Joseph W.
Title:
Research needs in coal mining.
Call Number:
P3940
Date:
undated
Description:
Serial issue. Issued as: West Virginia University. Coal Research Bureau. Technical report, no. 100.
Subject Topical:
Coal mines and mining--Research.
All:
Coal mines and mining--Research.