Rock Bolting In Ore Mines
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✎ Suggest a correctionPoints up the safe methods of rock bolting practiced in the underground mineral mines of the western part of the United States. Shows various installations and bolting patterns.
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Sources
- A-V Online (National Information Center for Educational Media). CD-ROM database of educational and documentary media, compiled and maintained by the National Information Center for Educational Media (NICEM). — title, year, creator, length, format, sound, description
- 16mm Filmography (legacy record) — catalog record
- usgov-av-1974 — title, year, creator, length, color, sound, description
Original permalink · Record added 2023-02-27 03:43:35 · Suggest a correction