The Snowy Mountains Hydro-Electric Scheme (1949–1974) drew over 100,000 workers from 30+ countries. Key drivers:
Australia's "Populate or Perish" drive brought displaced Europeans (Poles, Yugoslavs, Italians, Germans, Britons) seeking new lives. Many were skilled engineers, miners, and laborers.
The project—16 dams, 7 power stations, 225 km of tunnels—required a workforce peaking at 7,300. Roles ranged from tunnelers and electricians to surveyors and cooks.
Snowy pay exceeded Australian averages, with overtime, hazard allowances, and provided housing in purpose-built towns (Cooma, Cabramurra, Khancoban).
Workers were drawn by the challenge of "the greatest engineering project in the world" and the chance to build enduring infrastructure in a spectacular alpine landscape.
The Scheme reshaped Australia's demographics, engineering capability, and national identity.