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Bergbau
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keywords:(Bergbau)
New pressure-drop, holdup equations agree with field data
Lancashire man-riding haulage practice
Handling freight to outlying mining operations
Efficient use of railway wagons
Bituminous strippers install shovels and draglines and adopt larger automotive haulage units
Research program yields preliminary design method for pipelines in 1000-3000 at of water
Automatic track-brake system for man-haulage