Synonyme wurden verwendet für:
Bergbau
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keywords:(Bergbau)
Haulage delays: Causes and remedies
Transportation at Eunice mines
Use and handling of mine cars in british collieries
Explosion at Blaenhirwaun colliery
Efficient use of railway wagons
Bituminous strippers install shovels and draglines and adopt larger automotive haulage units
Safety aspects of underground transport in coal mines
History of development unit in low hazel seam at gedling colliery
Safety record of coal industry shows improvement despite increasing hazards