Safety Practices In Dredging Operations
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✎ Suggest a correctionShows that underwater mining for sand and gravel presents safety problems. Shows the tasks performed on a modern dredge and the hazards involved, and stresses the need for employees to be alert to the dangers and to work safely.
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- 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, description
- 16mm Filmography (legacy record) — sound, catalog record
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