The operations of Lake George Mines Pty Ltd were centred on a lead-zinc, copper and gold mine situated at Captain's Flat, located south east of Canberra. In the 1920s the British company, National Mining Corporation, examined the area and decided that the mine could be worked profitably again using modern extraction methods. Lake George Mines was incorporated as a limited liability company on 3 September 1930, becoming a proprietary company on 5 May 1943. The company conducted mining operations at Captain's Flat, New South Wales. In 1962 the company ceased operations and was placed in voluntary liquidation. In March 1962 the mine was closed following the exhaustion of further stopes and the increasingly unsafe condition of the mine. The London based holding company, Lake George Mining Corporation Limited, was placed into voluntary liquidation on March 31 1964.