American Toby Jug Museum 

Coal Miner toby jug produced by Artone Pottery of Burslem, England, circa 1980. A coal miner is a person who works in a coal mine. Mining is the extraction of valuable geological materials from the Earth and other astronomical objects. Mining is required to obtain most materials that cannot be grown through agricultural processes. Ores recovered by mining include metals, coal, oil shale, gemstones, limestone, chalk, dimension stone, rock salt, potash, gravel, and clay. Traditional English mines include coal and tin mines.