Over the last 10 years or so, dredging has resurfaced as a popular form of gold mining (except in California where dredging is currently banned). Sandy or gravel river banks contain large deposits of alluvial gold (loose pieces of gold or goldbearing sand), and dredging is a great way to recover this gold.
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sand and gravel dredges for gold mining for sale. Gold dredge Wikipedia, the free encyclopedia A gold dredge is a placer mining machine that extracts gold from sand, gravel,, "buckets" on a circular, continuous "bucketline" at the front end of the dredge. Mining Information KENAI GOLD, LLC
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Original gold dredging began in the very early 1900's, mainly to harvest gravels and sands for gold in previously worked placer gold fields. Some of these gold fields are the California ones of the Sierra Nevada 1849 gold rush, the Yukon one of the Klondike area near Dawson City and Atlin, BC. These gold dredges typically harvested the sand and gravel from the bottom of the streams and ...
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Apr 04, 2012· The dredges are powerful underwater vacuums that suck up rocks, gravel and sand from riverbeds to filter out gold. Environmentalists say the process destroys salmon habitat by changing the contours of streambeds, releasing toxic mercury leftover from the Gold Rush, and generating silt that chokes spawning beds.
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