K.G. Luke was a private mint that made 1956 Olympic Games medals for the Numismatic Association of Victoria, as well as a considerable number of other medals and trophies. It operated at least between 1937 and 1974, according to medals illustrated in Carlisle's Australian Commemorative Medals and Medalets.
E. Angus Jones was sometime Chair of a company called K.G. Luke, which may or may not relate to the mint of the same name. KG Luke Group Industries Ltd changed its name to Luke Limited on 20 December 1976. Luke Limited was taken over by National Consolidated Limited on 19 October 1983.
Industrial action at K.G. Luke and other metal companies in or about the early 1970s won differential increases which leveled up over-award payments between the sexes.
Australian National University website http://www.anu.edu.au/polsci/marx/interventions/equalpay.htm, accessed 21 Jan 2004