Abstract
An overview is presented of the retreatment of gold tailings and other residues, with the large Ergo operation as a primary case study, comprising gold recovery from a mixture of sulfide- and non-sulfide-bearing residues that arose from mining activities on the Witwatersrand, South Africa, from the early 1900s until the mid 1960s. The phases of evaluation, testwork, flowsheet development, operations and rehabilitation are covered, including re-mining techniques, flowsheets, and metallurgical treatment of sand and slime.
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