coal-pit
71pit pony — noun Brit. historical a pony used to haul loads in a coal mine …
72pit pony — noun (C) a small horse that was used in the past for moving coal in a mine …
73pit prop — noun (C) a support for the roof of an underground passage in a coal mine …
74pit yakker — Noun. A coal miner. North east use …
75pit — A hole or cavity in the ground. A mine, particularly a coal mine. A cavity dug in mining by way of reaching the ore. 36 Am J1st Min & M § 182. A hole dug in the ground and filled with water in which female thieves were drowned, instead of hanging …
76sea-coal — n. Mineral coal, pit coal …
77Big Pit National Coal Museum — Coordinates: 51°46′21″N 3°06′18″W / 51.7724°N 3.1050°W / 51.7724; 3.1050 …
78Minnie Pit Disaster — The Minnie Pit disaster was a coal mining accident in Halmer End, Staffordshire, UK in which 155 men died. The disaster took place on 12 January 1918, at the height of the Great War. The disaster, which was caused by an explosion due to firedamp …
79Open-pit mining — El Chino, located near Silver City, New Mexico, is an open pit copper mine …
80History of coal mining — Due to its abundance, coal has been mined in various parts of the world throughout history and continues to be an important economic activity today. Compared to wood fuels, coal yields a higher amount of energy per mass and could be obtained in… …