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Mining and Extractives - Earth Resources9 Jun 2016 , Minerals Exploration and Mining in Victoria: Landholder Information Booklet , radios, microwaves, telephone systems and aeronautical machinery , Gold and mineral sands (zircon, rutile and ilmenite) are also prevalent, , or sluices in the non-commercial search for gold, gemstones and other minerals...know more

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Metal Detecting Without The Machine And Find Gold, Silver & Coins ,2 Jun 2013 , Metal Detecting on the beach at an old Ferry Port, too many signals to use a detector so I raked the sand and had some great finds, please....know more

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BBC - Earth - There are people mining gold illegally in California's hills10 Oct 2016 , In the hills near Los Angeles, a handful of prospectors are hunting for gold But what they are doing is against the law and could be harming the....know more

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Open-pit mining - WikipediaOpen-pit, open-cast or open cut mining is a surface mining technique of extracting rock or minerals from the earth by their removal from an open pit or borrow , Machinery is minuscule compared to the size of this mine , Gold is generally extracted in open-pit mines at 1 to 2 ppm (parts per million) but in certain , Search....know more

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Huge Holes in the Earth: Open-Pit Mines Seen From Space | WIRED15 Oct 2009 , Open Search Field , Huge Holes in the Earth: Open-Pit Mines Seen From Space , rock, altering the rock to produce copper-rich minerals and gold , being worked by the Bagger 293, the largest machine in the world...know more

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