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Coal mines and mining
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Effect on railways of ground movements
Car transfer speeds rock gangway development
Evolution of truck haulage at Enos
Shuttle car haulage in difficult conditions
Shuttle cars in room-and-pillar block retreat panel system
Shuttle cars handle output of Illinois mine
Transportation service for Mobile loaders
Bituminous strippers install shovels and draglines and adopt larger automotive haulage units
Twenty-seventh annual review and progress number
Twenty-seventh annual review and progress number