depth of mining
31Uranium mining — The Ranger Uranium Mine in Australia …
32Gold mining in Alaska — Gold mining in Alaska, a state of the United States, has been a major industry and impetus for exploration and settlement since a few years after the United States acquired the territory from Russia. Russian explorers discovered placer gold in… …
33Derbyshire lead mining history — Goodluck Mine in Via Gellia. This article details some of the history of lead mining in Derbyshire, England. Contents 1 …
34Underground mining equipment — A coal cutting machine is used in conventional mining to undercut, top cut, or shear the coal face so that coal can be fractured easily when blasted. It cuts 9 to 13 feet into the bed. Continuous auger machine is used in mining coalbeds less… …
35Miners' survival during 2010 Copiapó mining accident — Main article: 2010 Copiapó mining accident The 2010 Copiapó mining accident began as a cave in on 5 August, 2010 at the San José copper gold mine in the Atacama Desert near Copiapó, Chile. The accident left 33 men trapped 700 meters… …
36New Mexico Institute of Mining and Technology — Established 1889 Type Public Endowment $16.1 million …
37Century mining corporation — Type Public Founded 2003 Headquarters Seattle The Century Mining Corporation is a Canadian gold producer formed in 2003 …
38Hoist (mining) — A drum hoist (cables visible) and motor In underground mining a hoist or winder[1] is used to raise and lower conveyances within the mine shaft. Modern hoists are normally powered using electric motors, historically with …
39Coal mining in the United Kingdom — Coalfields of the United Kingdom in the 19th century. Coal mining in the United Kingdom probably dates to Roman times and took place in many different parts of the country. Britain s coalfields are associated with Northumbria and Durham, North… …
40auger mining — ▪ coal mining method for recovering coal (coal mining) by boring into a coal seam at the base of strata exposed by excavation. Normally one of the lowest cost techniques of mining, it is limited to horizontal or slightly pitched seams that… …
