It has been 70 years since work began on the Snowy Mountains Hydro-Electric Scheme, Australia’s largest renewable energy generator. The scheme’s enormous system of power stations, dams and tunnels spreads across the high country to harvest the Snowy River for electricity generation and irrigation. More than 100,000 men and women worked on the project, most of them immigrants from more than 30 countries. This model of the scheme was commissioned for the start of construction in 1949 and presented to the Governor-General Sir William McKell. The scheme then opened in 1972.
See this model, and the rest of the national collection, in Canberra.