Job 28:1-4

Surely there is a mine for silver, And a place for gold which they refine. Iron is taken out of the earth, And copper is molten out of the stone. Man setteth an end to darkness, And searcheth out, to the furthest bound, The stones of obscurity and of thick darkness. He breaketh open a shaft away from where men sojourn; They are forgotten of the foot; They hang afar from men, they swing to and fro.