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The AU Grabber (pronounced as: Gold Grabber; [NB 1]) is a self-propelled barge excavator dredge used to mine Bering Sea placer gold deposits in the region around Nome, Alaska, USA. It is owned and operated by Richard Schimschat and featured in the Discovery Channel USA mining reality TV show Bering Sea Gold .
A grab dredge. Dredging is the excavation of material from a water environment. Possible reasons for dredging include improving existing water features; reshaping land and water features to alter drainage, navigability, and commercial use; constructing dams, dikes, and other controls for streams and shorelines; and recovering valuable mineral deposits or marine life having commercial value.
In 1941, Ellicott Dredges also built the dredge MINDI, a 10,000 HP, 28-inch cutter suction dredge still operating in the Panama Canal. Currently, Ellicott has sold over 1,500 dredges to 80 different countries. Their cutter dredges can be used for a variety of applications including coastal protection, sand mining, and land reclamation.
Gold Dredge, Klondike River, Canada, 1915 The Yankee Fork dredge near Bonanza City, Idaho, which operated into the 1950s. A gold dredge is a placer mining machine that extracts gold from sand, gravel, and dirt using water and mechanical methods. The original gold dredges were large, multi-story machines built in the first half of the 1900s.
These dredge pipe pieces are used onboard of dredgers to connect the dredge pump with the discharge pipe. Dredge pitched T-pipe. Mostly the pipes are made from cast steel. Sometime welded pipes are used. Dredge pipe pieces may have different thicknesses, shapes, and lengths, they are also provided with lifting lugs for easy handling. They are ...
One or more, Dredging pumps to create an under pressure in order to suck the substance into the hopper; Transportation tubes to transport the substance from the pipes to the hopper; An overflow to discharge the redundant water overboard; Degassing installation to extract any possible gas from the substance in order to reduce damage and increase ...
Archaeologists preparing a water dredge on a shallow site. It consists of a large bore straight tube to which is attached a hose pipe through which clean water is pumped. The Bernoulli effect from the flow of pumped water causes suction at the mouth of the dredge. Water and sediment are sucked from the excavation site and released from the far ...
The Central Dredging Association (CEDA), founded in 1978, is an independent, non-profit, non-governmental, professional society for the dredging industry. It provides an independent forum for people involved in activities related to dredging and marine construction in Europe, Africa and the Middle-East, and aims to generate and disseminate impartial knowledge and information about dredging in ...
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