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Gold prospector pouring water through his rocker box, Pinos Altos, New Mexico (1940). Rocker box exhibit at Dahlonega Gold Museum. 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.
Sepro Mineral Systems Corp. is a Canadian company founded in 1987 and headquartered in British Columbia, Canada.The outcome of the acquisition of Sepro Mineral Processing International by Falcon Concentrators in 2008, [1] the company's key focus is the production of mineral processing equipment for the mining and aggregate industries. [2]
A gold pan. Gold prospecting is the act of searching for new gold deposits. Methods used vary with the type of deposit sought and the resources of the prospector. Although traditionally a commercial activity, in some developed countries placer gold prospecting has also become a popular outdoor recreation. Gold prospecting has been popular since ...
Allis-Chalmers was a U.S. manufacturer of machinery for various industries.Its business lines included agricultural equipment, construction equipment, power generation and power transmission equipment, and machinery for use in industrial settings such as factories, flour mills, sawmills, textile mills, steel mills, refineries, mines, and ore mills.
Gold pans and shovels are commonly allowed, but sluice boxes and suction dredges may be prohibited in some areas. [12] [13] There are public mining areas in many states, and prospecting may allow one to stake a gold placer claim or other type of mining claim in certain areas. Some public lands have been set aside for recreational gold panning.
Stamp mills were used in early paper making for preparing the paper-stuff , before the invention of the Hollander beater, and might have derived from those used in fulling wool. [14] They were used in oil-seed processing prior to pressing the oil from the milled seeds. Early mills were water-powered but mills can also be steam or electric powered.