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A rocker box (also known as a cradle or a big box) is a gold mining implement for separating alluvial placer gold from sand and gravel which was used in placer mining in the 19th century. It consists of a high-sided box, which is open on one end and on top, [1] and was placed on rockers.
This may be done by open-pit mining or by various surface excavating equipment or tunneling equipment. Placer mining is frequently used for precious metal deposits (particularly gold) and gemstones, both of which are often found in alluvial deposits—deposits of sand and gravel in modern or ancient stream beds, or occasionally glacial deposits ...
The Clark Equipment Company Administrative Complex is a collection of former manufacturing buildings located at 301-324 East Dewey Street and 204-302 North Red Bud Trail in Buchanan, Michigan. It was the original home of Clark Equipment Company , and was listed on the National Register of Historic Places in 2023.
Dredges were also used to mine placer deposits of other minerals, such as tin ore. [8] In later years, some dredges were electrically powered. [9] A gold dredge was working at Porcupine Flat, near Maldon, Victoria, until 1984. [10] From Australia, in turn, gold dredging technology spread to New Guinea, at the time an Australian territory, in ...
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Placer mining is a method of extracting gold from alluvial deposits such as sand, gravel, and sediment. [43] [44] These are known as placer deposits which are typically found in riverbeds, stream beds, and floodplains. [45] These deposits typically contain minerals that are resistant to weathering and eroision like gold, platinum, diamonds, and ...
In 2007, Ingersoll Rand sold Clark Equipment Company to Doosan International of South Korea. The sale included the Construction Equipment Group of Ingersoll Rand. [14] In July 2021, Doosan Infracore was acquired by Hyundai Heavy Industries, which paid approximately $722.45 million for a 30%, controlling stake in the company. Doosan Infracore ...
With permission granted from the Indonesian Department of Tourism and the local village chiefs, fossicking for gold can be carried out in several regions that are accessible to international tourists. However, fossicking equipment is restricted to gold pans, shovels, and metal detectors. The use of sluices, dredges, or other machinery is forbidden.