Engine shaft
Mine shaft used for the purpose of pumping
From Wikipedia, the free encyclopedia
For mine construction, an engine shaft[1] is a mine shaft used for the purpose of pumping, irrespective of the prime mover.
Mine shaft used for the purpose of pumping
From Wikipedia, the free encyclopedia
For mine construction, an engine shaft[1] is a mine shaft used for the purpose of pumping, irrespective of the prime mover.
