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California Gold Rush | HistoryNet Facts, information and articles about the California Gold Rush, an event of Westward Expansion from the Wild West California Gold Rush Facts Dates 1848-1857 ... Cooking oil could help clean up mercury at mining sites ... Artisanal mining is the largest producer of mercury emissions worldwide and, according to the United Nations Environment Programme, mercury rich tailings and exposure ... Wires - CNBC 1 Min Ago. HONOLULU _ Bank of Hawaii Corp. on Monday reported third-quarter profit of $45.9 million. The bank, based in Honolulu, said it had earnings of $1.08 per share.    Read More