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Some suggestions on safety in coal-mine haulage
Some of most prolific sources of haulage accidents are discussed, with steps that may be taken to minimize their occurrence; commentary on dangerous practices.
Some suggestions on safety in coal-mine haulage
Some of most prolific sources of haulage accidents are discussed, with steps that may be taken to minimize their occurrence; commentary on dangerous practices.
Some suggestions on safety in coal-mine haulage
U S Bur Mines -- Information Cir
Herbert, C.A. (Autor:in)
1937
18 pages
Report
Englisch
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