Kalgoorlie (kălgŏrˈlē) [key], town (1991 pop. 25,016), Western Australia, SW Australia. It is the chief mining town of the state and the center of the East Coolgardie Goldfield. Gold was found at nearby Coolgardie in 1892; nickel is also mined. The Western Australia School of Mines (1902) was transferred (1903) from Coolgardie to Kalgoorlie.