mining and processing of gold iron and phosphates …
metallic ores (copper, gold, iron, lead, silver, and zinc ores), uranium overburden, and two nonmetals (asbestos and phosphate rock) .10 It estimated that these mining segments produced 2.2 and 1.4 billion tons of E&Bwastes in 1980 and 1982, respec- tively.11 About 90percent of the waste was waste rock and tailings (two-thirds waste rock, one-third
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