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Vanning
Vanning is a type of ore dressing by which ores are washed on a shovel. Typically, a powdered sample of orestuff is swirled with water on the blade of a shovel and then given a series of upward flicking motions. The heavier ore is tossed up through the water and appears as a crescent shaped patch at the top of the charge with the lighter gangue below. Developed in western England, this process was still in use at a major tin mine and a mine waste collection firm in Cornwall until 1985. Frue Vanner In the 19th century the process was automated and used for the separation of ore on an industrial scale. The Frue vanner was one such machine that was widely adopted. It was invented in 1874, by W. B. Frue, Superintendent of the Silver Islet Mine, Ontario, Canada, who spent two years developing the system.E. Henry Davies, Machinery for Metalliferous Mines, London: C. Lockwood & Son 1894. p.320 (on Google Books) In the Frue vanner a continuous rubber belt 4 feet wide and 27½ feet long ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
King Edward Mine
The King Edward Mine at Camborne, Cornwall, in the United Kingdom is a mine wholly owned by Cornwall Council. At the end of the 19th century students at the Camborne School of Mines spent much of their time doing practical mining and tin dressing work in the local tin mines. The industry was almost in terminal decline and the surviving mines were falling behind technically. This was hardly ideal from the instruction point of view. The only real solution was for Camborne School of Mines to have its own underground mine. South Condurrow Mine In 1897, Camborne School of Mines took over the abandoned eastern part of the South Condurrow Mine around the engine shaft of the same name. This offered the opportunity to work both William's Lode and the Great Flat Lode down to 400 feet from surface. No pumping was necessary as all water in the mine drained into the then working Grenville mine to the south. Between 1897 and 1906 the mine was almost totally re-equipped based on what was t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
