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Use of steel sets in underground coal
Testing materials for support-wall construction
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Published Year
1980-1989 (2)
Subject
Aggregates (Building materials)--Testing (1)
Coal--Testing (1)
Concrete mine supports (1)
Ground control (Mining) (1)
Mine timbering (1)
Author
Hay, K. E. (2) *
Johnston, Joanne L. (1)
Serbousek, M. O. (1)
Stears, J. H. (1)
