Shaft Mining - Shaft Compartments

Shaft Compartments

A mine shaft is frequently split into multiple compartments. The largest compartment is typically used for the mine cage, a conveyance used for moving workers and supplies below the surface. It functions in a similar manner to an elevator, with the largest often double-deck.

The second compartment is used for one or more skips, used to hoist ore to the surface. Smaller mining operations use a skip mounted underneath the cage, rather than a separate device, while some large mines have separate shafts for the cage and skips. The third compartment is used for an emergency exit; it may house an auxiliary cage or a system of ladders. An additional compartment houses mine services such as high voltage cables and pipes for transfer of water, compressed air or diesel fuel.

A second reason to divide the shaft is for ventilation. One or more of the compartments discussed above may be used for air intake, while others may be used for exhaust.