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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.
The Goldstream Dredge No. 8 cut a 4.5-mile (7.2 km) track and produced 7.5 million ounces of gold. [2] The dredge was named a Historic Mechanical Engineering Landmark by the American Society of Mechanical Engineers in 1986. [2] In 1984, it was listed as a historic district on the National Register of Historic Places. [1] Today, it is open to ...
A miner using a hydraulic jet to mine for gold in California, from The Century Magazine January 1883. Hydraulic mining is a form of mining that uses high-pressure jets of water to dislodge rock material or move sediment. [1] In the placer mining of gold or tin, the resulting water-sediment slurry is directed through sluice boxes to
Panning for gold was the simplest method of recovering gold, but mostly used for prospecting since it was slow. A faster way was by a rocker box or by sluicing. Dirt was filled into the box or sluice together with water and rocking movements or gravity would make the gold particle go to the bottom whereas sand and fine gold particles would flow ...
Other gold rushes occurred in Papua New Guinea, Australia at least four times, Fiji, [3] South Africa and South America. In all cases, the gold rush was sparked by idle prospecting for gold and minerals which, when the prospector was successful, generated 'gold fever' and saw a wave of prospectors comb the countryside.
The dredge mined the entire valley of Cache Creek as far as the mouth of Nugget Creek, then bulldozers mined what remained. Hydraulic mining was also widely used before 1942, and many ditches can be found all over the Dutch Hills today. About 115,000 ounces of placer gold was reported to have been produced from Cache Creek.
The Sumpter Valley Gold Dredge is a historic gold dredge located in Sumpter, in the U.S. state of Oregon. Gold was discovered in Sumpter in 1862. Gold was discovered in Sumpter in 1862. Three gold dredges were put into service in the Sumpter Valley district between 1912 and 1934.
The Fairbanks Exploration Company Gold Dredge No. 5 was a historic gold mining dredge in a remote area of Fairbanks North Star Borough, Alaska, north of the city of Fairbanks. It was last located on Upper Dome Creek, shortly northeast of the mouth of Seattle Creek, about 20 miles (32 km) north of Fairbanks, [4] prior to its being scrapped c. 2012.