Gold mining in Western Australia is the third largest commodity sector in Western Australia (WA), behind iron ore and petroleum, with a value of A$11.9 billion. Gold mining in Western Australia dates back to the 1880s but became a significant industry in the 1890s, following gold discoveries at Coolgardie in 1892 and Kalgoorlie in 1893. It reached an early peak in 1903, experienced a revival in the 1930s and a further revival in the 1980s. Between, the industry declined a number of times, such as during the two world wars, experiencing an absolute low point in 1976.