A coal miner. A person in the business or occupation of producing (digging or mining coal or making charcoal) or in its transporting or commerce.

What is the difference between a miner and a Collier?

The term miner describes anyonewho works in a mine, wether it is iron, copper, gold, coal or whatever. The term collier specifically describes a coal miner. So while a collier could also be described as a miner, a miner of say iron could never be described as a collier.

What trade is a Collier?

A collier is a bulk cargo ship designed or used to carry coal. Early evidence of coal being transported by sea includes use of coal in London in 1306. In the fourteenth and fifteenth centuries, coal was shipped from the River Tyne to London and other destinations.