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in underground mines

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  • Mines of Paris — Flooded gallery under Rue de la Voie Verte The Mines of Paris (in French Carrières de Paris quarries of Paris ) comprise a number of abandoned, subterranean mines under Paris, France, connected together by galleries. Three main networks exist;… …   Wikipedia

  • Underground mine —   A mine where coal is produced by tunneling into the earth to the coalbed, which is then mined with underground mining equipment such as cutting machines and continuous, longwall, and shortwall mining machines. Underground mines are classified… …   Energy terms

  • Underground coal gasification — (UCG) is an in situ gasification process carried out in non mined coal seams using injection and production wells drilled from the surface, which enables the coal to be converted into product gas. The process is flexible in operation and is… …   Wikipedia

  • Mines of Titan — Developer(s) Westwood Associates Publisher(s) Infocom Pl …   Wikipedia

  • Underground mining (soft rock) — refers to a group of underground mining techniques used to extract coal, oil shale and other minerals or geological materials from sedimentary ( soft ) rocks. Because deposits in sedimentary rocks are commonly layered and relatively less hard,… …   Wikipedia

  • Underground mining (hard rock) — A three dimensional model of an underground mine with shaft access Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, mainly those containing metals[1] such as ore containing gold …   Wikipedia

  • Mines and Collieries Act 1842 — The Mines and Collieries Act 1842 (c. 99), commonly known as the Mines Act of 1842, was an Act of the Parliament of the United Kingdom. It was a response to the working conditions of children revealed in the Children s Employment Commission… …   Wikipedia

  • Underground mine ventilation — Schematic of underground mine ventilation Underground mine ventilation provides a flow of air to the underground workings of a mine of sufficient volume to dilute and remove noxious gases (typically NOx, SO2, methane, CO2 and CO). The source of …   Wikipedia

  • Underground city — An underground city is a network of tunnels that connect buildings beneath street level. These may include office blocks, shopping malls, train and metro stations, theatres, and other attractions. An underground city can usually be accessed… …   Wikipedia

  • Underground Work (Women) Convention, 1935 — Infobox ILO convention code= C45 name= Underground Work (Women) Convention, 1935 adopt= June 21, 1935 force= May 30, 1937 classify= Underground Work subject= Occupational Safety and Health prev= Unemployment Provision Convention, 1934 (shelved)… …   Wikipedia

  • underground — adv 1. subterraneously, subterraneanly, by or through a tunnel or underpass, by subway or the metro; under or in the ground, in a cave. 2. secretly, in secret, privately, in private, in a hush hush manner, sub rosa, out of view, behind closed… …   A Note on the Style of the synonym finder

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