In 1858, gold was discovered at Canoona, in 1867 in Gympie, in 1872 on the Palmer river, southwest of Cooktown all in Queensland Australia.The Victorian gold rush was a period in the history of Victoria, Australia approximately between 1851 and the late 1860s during which Victoria dominated the world gold production. 1 kilogram of gold would be worth about 55 thousand dollars.
Gold production has become a major source of income for several countries of the Amazon region, especially Brazil which has become the fourth largest producer in the world. The primary concern of the industry is mercury pollution that goes hand in hand with current mining techniques. Although the environmental effects of the mercury are not currently serious, there are significant dangers to the health of the human population of the region.
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