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• Adit — Gated entrance of an abandoned adit near Medford, Oregon, USA …   Wikipedia

• ADIT — Agence pour la diffusion de l information technologique L Agence pour la diffusion de l information technologique, couramment abrégée par l acronyme Adit, est une entreprise publique française d intelligence économique et stratégique, créée en… …   Wikipédia en Français

• Adit — Agence pour la diffusion de l information technologique L Agence pour la diffusion de l information technologique, couramment abrégée par l acronyme Adit, est une entreprise publique française d intelligence économique et stratégique, créée en… …   Wikipédia en Français

• Great County Adit — The Great County Adit, sometimes called the County Adit, or the Great Adit was a system of interconnected adits that helped drain water from the tin and copper mines in the Gwennap area of Cornwall, in the United Kingdom. Construction started in… …   Wikipedia

• Quincy Mine — Infobox nrhp | name =Quincy Mining Company Historic District nrhp type = nhld caption = The #2 Shafthouse (left) and the Hoist House (right) nearest city= Hancock, Michigan locmapin = Michigan area = architect= Quincy Mining Co. architecture= No… …   Wikipedia

• Monte Cristo Gold Mine — Coordinates: 34°21′N 118°05′W / 34.35°N 118.08°W / 34.35; 118.08 The Monte Cristo Gold Mine (Spanish for Mountain of Christ Gold Mi …   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

• Mine exploration — This article is about visiting mines. For searching for minerals, see Mineral exploration. Mine exploration is a hobby in which people visit abandoned mines, quarries, and sometimes operational mines. Enthusiasts usually engage in such activities …   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

• Book Cliff mines — The Book Cliff Mines were coal mines located near Grand Junction, Colorado. They closed in 1925.History and DescriptionBy the time Grand Junction was three years old it had become apparent to its citizens that they needed a good coal supply if… …   Wikipedia

• Nanotechnologie — Représentation d un nanotube de carbone (cliquer pour voir l animation) Les nanosciences et nanotechnologies (NST) peuvent être définies a minima comme l ensemble des études et des procédés de fabrication et de manipulation de structures, de… …   Wikipédia en Français