miner

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun One whose work or business it is to extract ore or minerals from the earth.
• noun A machine for the automatic extraction of minerals, especially of coal.
• noun A soldier, often a specialist, engaged in mining operations.
• noun Zoology A leaf miner.

from The Century Dictionary.

• noun One who mines; a person engaged in digging for metals or minerals, or in forming a military or other mine.
• noun In zoöl, an insect that mines: chiefly in composition: as, a leaf-miner.
• noun The term is sometimes limited to one who mines for minerals other than coal, a coal-miner being called a collier in Great Britain.

from the GNU version of the Collaborative International Dictionary of English.

• noun One who mines; a digger for metals, etc.; one engaged in the business of getting ore, coal, or precious stones, out of the earth; one who digs military mines.
• noun Any of numerous insects which, in the larval state, excavate galleries in the parenchyma of leaves. They are mostly minute moths and dipterous flies.
• noun The chattering, or garrulous, honey eater of Australia (Myzantha garrula).
• noun (Med.) a swelling on the black of the elbow due to inflammation of the bursa over the olecranon; -- so called because of frequent occurrence in miners.
• noun in hydraulic mining, the amount of water flowing under a given pressure in a given time through a hole one inch in diameter. It is a unit for measuring the quantity of water supplied.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A person who works in a mine.
• noun An operator of ordnance mines and similar explosives.
• noun A bird of one of four species of Australian endemic honeyeaters in the genus Manorina.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun laborer who works in a mine