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Kohle
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keywords:(Kohle)
Accidents at coal face and their prevention
A discussion of the methods used in designing the C.M. and St. P. Gondola
Advancement of an amended biofiltration system for the removal of ammonia
Advancement of an amended biofiltration system for the removal of ammonia
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
A letter to a commissioner of the inland navigation : concerning the Tyrone collieries