Fixed mine wagon transportation tool for moving coal, ore, waste rock and material in the process of mining, dragged by a locomotive or winch.
Mechanical loading demands the largest possible car consistent with haulage and loading conditions so as to reduce the number of car changes and time delay. When the car must be designed for the colliery, shaft size may limit the car length and width. When a new mine is opened, the car size is often chosen arbitrarily, subject to physical conditions as far as can be determined.
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