Job 28:1-4

1Surely there is a mine for silver and a place where gold is refined.

2Iron is taken from the ground, and copper is smelted from ore.

3A miner puts an end to the darkness; he probes the deepest recesses for ore in the gloomy darkness.

4He cuts a shaft far from human habitation, in places unknown to those who walk above ground. Suspended far away from people, the miners swing back and forth.