spacing of mines

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• mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… …   Universalium

• Magnetometer — A magnetometer is a measuring instrument used to measure the strength or direction of a magnetic field either produced in the laboratory or existing in nature. Some countries such as the USA, Canada and Australia classify the more sensitive… …   Wikipedia

• Chairlift — For the musical group, see Chairlift (band). A stairlift is sometimes called a chairlift . Hunter Mountain chairlift …   Wikipedia

• Ore dock — Laker at dock in Duluth, Minnesota showing scale …   Wikipedia

• explosive — explosively, adv. explosiveness, n. /ik sploh siv/, adj. 1. tending or serving to explode: an explosive temper; Nitroglycerin is an explosive substance. 2. pertaining to or of the nature of an explosion: explosive violence. 3. likely to lead to… …   Universalium

• Geophysical MASINT — is a branch of Measurement and Signature Intelligence (MASINT) that involves phenomena transmitted through the earth (ground, water, atmosphere) and manmade structures including emitted or reflected sounds, pressure waves, vibrations, and… …   Wikipedia

• Orex Exploration — Inc. Type Public (TSX V: OX) Industry Mining Founded 1987 …   Wikipedia

• tunnels and underground excavations — ▪ engineering Introduction        Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …   Universalium

• Mining rock mass rating — Laubscher developed the Mining Rock Mass Rating (MRMR)[1][2][3][4][5] system by modifying the Rock Mass Rating (RMR) system of Bieniawsk …   Wikipedia

• Operation Igloo White — Part of the Vietnam War Date 1968–1973 Location Southern Laos Result …   Wikipedia

• Tibbitt to Contwoyto Winter Road — is a km to mi|num=568|abbr=no|spell=Commonwealth|precision=0|wiki=yes long annual ice road first built in 1982 to service mines and exploration activities in the Northwest Territories and Nunavut in northern Canada. The road is the world s… …   Wikipedia