Consider the problem of a mine owner who must decide at what rate to extract ore from his mine.

Drift mining is the use of drifts to extract ore - in this case the drifts follow the vein.

In order to continue the fight against the orcs, the king needs to extract magical ore and use it for weapons and armor.

Shallow cuttings were then used to extract ore.

The Favona underground mine began extracting ore at the end of 2006.

In order to fight back, the king needs to extract magical ore from mines, which can be used to forge more powerful weapons.

By 1916, the Pueblo was at the peak of its production extracting ore at a value of $763, 586.

In the 16th century the Spanish made a short-lived attempt at extracting ore from in the area's mountains.

A miner is a person who extracts ore, coal, or other minerals from the earth through mining.

The miner on the right is extracting ore that must be taken out of the mine by the worker on the left.