 During the Second World War, when salt was need for munitions manufacture, employment rose from 30 workers to 100 working in three shifts a day and two trains a week transported the product in bags.In 1967, 1000 tonnes a day were harvested; at that time South Australia was producing 80 per cent of Australia’s salt, although that was soon to decrease with major expansion of solar salt production in Western Australia.Forty years later, average annual production was reported as 10,000 tonnes (11,000 tons).