- gold dredging
- 挖掘船采金
English-Chinese dictionary of mining (英汉矿业大词典). 2013.
gold dredging
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Gold mining in Colorado — Gold mining in Colorado, a state of the United States, has been an industry since 1858, and played a key role in the establishment of the state of Colorado.Explorer Zebulon Pike heard a report of gold in South Park, present day Park County,… … Wikipedia
Gold mining — Gold mine redirects here. See Goldmine for other uses of the term. Gold mining consists of the processes and techniques employed in the removal of gold from the ground. There are several techniques by which gold may be extracted from the Earth.… … Wikipedia
Gold in California — became highly concentrated there as the result of global forces operating over hundreds of millions of years. Volcanoes, tectonic plates and erosion all combined to concentrate billions of dollars worth of gold in the mountains of California.… … Wikipedia
Gold Canyon — is located a few miles south of Alleghany, California on the Sierra and Nevada county line. The middle fork of the Yuba River flows through the canyon. Gold mining began in Gold Canyon in the early 1850 s and has continued to present day. Three… … Wikipedia
Dredging — Dredge redirects here. For other uses, see Dredge (disambiguation). Dredgers redirects here. For the German municipality, see Dreggers. Dredging is an excavation activity or operation usually carried out at least partly underwater, in shallow… … Wikipedia
Gold rush — A gold rush is a period of feverish migration of workers into the area of a dramatic discovery of commercial quantities of gold. Eight gold rushes took place throughout the 19th century in Argentina, Australia, Brazil, Canada, Chile, New Zealand … Wikipedia
Gold dredge — The gold dredge is a mechanical method of extracting gold from sand and gravel. The gold dredge involves a mechanical method of digging up the gravel or dirt, using either buckets or suction. The material is then sorted and sifted using water… … Wikipedia
California Gold Rush — The California Gold Rush (1848 ndash;1855) began on January 24, 1848, when gold was discovered by James Marshall at Sutter s Mill in Coloma, California. [E] vents from January 1848 through December 1855 [are] generally acknowledged as the Gold… … Wikipedia
Puget Sound Bridge and Dredging Company — was a major shipbuilding and construction company, located in Seattle, Washington. The firm was established in 1898 on Elliott Bay in Puget Sound. The company was engaged in construction projects around the United States and built ships for the U … Wikipedia
Mining methods of the Klondike Gold Rush — See also: Klondike Gold Rush, Mining Contents 1 During the Klondike Gold Rush (1896 1910) 1.1 Methods of bringing out the gold 1.1.1 Underground mining … Wikipedia
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