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Gprevious mining is usually a robust and soiled enterprise. Even with comparatively wealthy deposits, normally present in distant areas, you want big excavators, enormous crushing machines, plenty of water and extremely poisonous chemical substances, like acids and cyanide, to extract simply ten grams of gold (there are 31 grams in a troy ounce) from a single tonne of ore. At present charges, that’s price over $800.
