Mineral mining

Mineral mining

The extraction of valuable minerals or other geological materials from the earth for economic interests.

Industry: Mining

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Mineral mining

creeper

Mining; General mining

An endless chain, with projecting bars at intervals that catch the car axles and haul them up an inclined plane. Creepers are used on the surface and around the pit bottom. They are also used on ...

bucket line

Mining; General mining

An endless line of digging buckets on a dredger or on a bucket elevator.

underrope haulage

Mining; General mining

An endless rope haulage in which the ropes run under the cars. The cars are attached singly or in short sets by clips.

An endless-rope system in which the rope runs over the tubs or cars in the center of the rails. This system is generally adopted on undulating roads, where the tension in a heavily loaded rope would ...