Job 28:2-6

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

3Mortals put an end to the darkness; they search out the farthest recesses for ore in the blackest darkness.

4Far from human dwellings they cut a shaft, in places untouched by human feet; far from other people they dangle and sway.

5The earth, from which food comes, is transformed below as by fire;

6lapis lazuli comes from its rocks, and its dust contains nuggets of gold.