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collect the froth

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  • Mining in the Upper Harz — The headframe of the Emperor William Shaft in Clausthal is one of the oldest surviving winding towers in Germany …   Wikipedia

  • Harry Potter and the Half-Blood Prince (video game) — Infobox VG title = Harry Potter and the Half Blood Prince developer = EA Bright Light Studio publisher = Electronic Arts designer = engine = released = Summer 2009 [cite web|url=http://www.shacknews.com/onearticle.x/54614|title=Harry Potter Game… …   Wikipedia

  • To whip the cat — Whip Whip, v. t. [imp. & p. p. {Whipped}; p. pr. & vb. n. {Whipping}.] [OE. whippen to overlay, as a cord, with other cords, probably akin to G. & D. wippen to shake, to move up and down, Sw. vippa, Dan. vippe to swing to and fro, to shake, to… …   The Collaborative International Dictionary of English

  • Sewage treatment — The objective of sewage treatment is to produce a disposable effluent without causing harm to the surrounding environment, and also prevent pollution.[1] Sewage treatment, or domestic wastewater treatment, is the process of removing contaminants… …   Wikipedia

  • lead processing — Introduction       preparation of the ore for use in various products.       Lead (Pb) is one of the oldest metals known, being one of seven metals used in the ancient world (the others are gold, silver, copper, iron, tin, and mercury). Its low… …   Universalium

  • United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …   Universalium

  • Buka Island — is the second largest island in the Papua New Guinean province of Bougainville. History Buka was first occupied by humans in paleolithic times, some 30,000 years ago. The present inhabitants speak languages that in all likelihood stem from the… …   Wikipedia

  • Coal breaker — A coal breaking plant, depicted on a postcard in 1907. A coal breaker was a coal processing plant which broke coal into various useful sizes. Coal breakers also removed impurities from the coal (typically slate) and deposited them into a culm… …   Wikipedia

  • Zinc smelting — is the process of converting zinc concentrates (ores that contain zinc) into pure zinc. The most common zinc concentrate processed is zinc sulfide,Citation | title = Compilation of Air Pollutant Emission Factors | publisher = U.S. Environmental… …   Wikipedia

  • Mineral processing — Crushing, a form of comminution, one of the unit operations of mineral processing In the field of extractive metallurgy, mineral processing, also known as mineral dressing or ore dressing, is the process of separating commercially valuable… …   Wikipedia

  • Distillation — Distiller and Distillery redirect here. For other uses, see Distiller (disambiguation) and Distillery (disambiguation). For other uses, see Distillation (disambiguation). Laboratory display of distillation: 1: A heating device 2: Still pot 3:… …   Wikipedia

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