Synonyme wurden verwendet für:
Bergbau
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keywords:(Bergbau)
Accidents at coal face and their prevention
Automatic track-brake system for man-haulage
Bituminous strippers install shovels and draglines and adopt larger automotive haulage units
Development of vertical drum (Dranyam) shearer loader
Effect of stripping methods on deepening rate of open pits
Efficient use of railway wagons