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  • 41Antarctica — /ant ahrk ti keuh, ahr ti /, n. the continent surrounding the South Pole: almost entirely covered by an ice sheet. ab. 5,000,000 sq. mi. (12,950,000 sq. km). Also called Antarctic Continent. * * * Antarctica Introduction Antarctica Background:… …

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  • 42tunnels 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 …

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  • 43List of oil field acronyms — Contents 1 # 2 A 3 B 4 C …

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  • 44History of the petroleum industry in Canada — The Canadian petroleum industry arose in parallel with that of the United States. Because of Canada s unique geography, geology, resources and patterns of settlement, however, it developed in quite different ways. The evolution of the petroleum… …

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  • 45mining — /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… …

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  • 46Deepwater Horizon explosion — This article is about the explosion. For the drilling rig and oil spill, see Deepwater Horizon (disambiguation). Deepwater Horizon explosion Anchor handling tugs and platform supply vessels combat the fir …

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  • 47Ice core — An ice core is a core sample from the accumulation of snow and ice over many years that have re crystallized and have trapped air bubbles from previous time periods. The composition of these ice cores, especially the presence of hydrogen and… …

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  • 48Peak oil — A logistic distribution shaped production curve, as originally suggested by M. King Hubbert in 1956 …

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  • 49Electrical discharge machining — An electrical discharge machine Electric discharge machining (EDM), sometimes colloquially also referred to as spark machining, spark eroding, burning, die sinking or wire erosion,[1] is a manufacturing process whereby a desired shape is obtained …

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  • 50Marcellus Formation — Stratigraphic range: Middle Devonian …

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