Synonyme wurden verwendet für:
Bergbau
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keywords:(Bergbau)
Accidents at coal face and their prevention
Accounting methods at Roan Antelope
Advantages of moving iron ore by underground conveyors
Aerial ropeway for transporting coal
Aerial tramway is transportation link at Pond Creek
A haulage system with gathering locomotives only
A haulage system with gathering locomotives only
Airlift and lift equipped with container feeders
Air lift to labrador iron fields
Airplane transport to remote Peruvian mines
A means of securing main haulage roads and return airways of a mine otherwise than with timber
Analysis of performance of some sections of underground transportation
An automatic signal system for crossovers on underground railways operated by electric locomotives
Application of compressed air in linite industry
Arizona low iron chrysotile asbestos situation
Armadillo heavy duty face conveyor
Automatic rope haulage clip for mine cars
Automatic track-brake system for man-haulage
Automatic track maintenance underground
Battery power for shuttle cars
Belt pulls shuttle car output up 7 percent grade at Standard
Betriebskosten und Selbstkosten der Zechenbahnen
Big wheel loaders handle many jobs
Bituminous strippers install shovels and draglines and adopt larger automotive haulage units
Car handling at Savil Colliery
Cars for transporting explosives
Car transfer speeds rock gangway development
Car transporter allows stripping two seams simultaneously at Huntsville-Sinclair Mine
Chino puts electric wheel truck on trolley line
Comparison of horse and benzine-locomotive haulage