caver

Etymology
From.

Noun

 * 1) A person who explores caves.
 * 2)  One who works the tailings of a mine to extract small pieces of marketable ore.
 * 1)  One who works the tailings of a mine to extract small pieces of marketable ore.
 * 1)  One who works the tailings of a mine to extract small pieces of marketable ore.

Verb

 * 1) to dig; to mine