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Roof bolting and dust control
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Published Year
1950-1959 (1)
Subject
Coal mines and mining--Dust control (1) *
Mine roof bolting (1)
Author
Anderson, Floyd G. (1) *
Harmon, John P. (1)
Johnson, Leslie. (1)
Owings, C. W. (1)
Westfield, James. (1)
