Depression that forms the bottom of the quarry; it is a result of the extraction of deposits.
Access road leading to the quarry; it is used to haul coal to the treatment plant.
Solid fossil fuel that is black and contains a large amount of carbon.
Vertical distance between the horizontal planes of two benches.
Roadway between two benches; it is inclined so that motorized vehicles can remove the ore extracted from the various levels.
Part of the ground that covers the ore beds; it is removed to reach the deposit.
The land that covers the deposit.
Vertical surface created by dynamiting a deposit to extract its ore.
The levels of a quarry that are arranged like steps of a staircase and from which coal or ore is extracted.