On haulage roads in new No. 43 mine of Peabody Coal Co, located near Harrisburg in Saline County, Ill, grading of track is done at same time entries are being developed, with no interruption to working cycle at face.
Mainline grading work coordinated with entry development
Mechanization
Mechanization ; 12 , n 11
1948
2 pages
Aufsatz (Zeitschrift)
Englisch
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