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Neville "Chappy" Williams is an elder of the Wiradjuri Nation, in Western New South Wales, and a former professional boxer. Known as "Uncle Chappy" to those who follow indigenous Australian customs, he is a regular at the Aboriginal Tent Embassy in Canberra and a key opponent of the Barrick Gold Corporation's gold mine project at Lake Cowal. Barrick sold the Cowal Mine to Evolution Mining in 2015.