New technology has allowed an old iron ore mine in South Australia's mid-north to be reopened.
Mineral Resources and Energy Minister Tom Koutsantonis said Arrium Mining's Iron Baron iron ore mine near Whyalla would create 100 new jobs and also provide a boost to local suppliers.
"New technology has provided an opportunity to review the iron ore assets that were originally worked last century and adopt more efficient practices to extract the hematite," Mr Koutsantonis said in a statement on Wednesday.
"Reworking an old mine in a new century delivers a number of environmental positives.
"For example, tailings will be put into existing pits to minimise the environmental footprint and plans are in place to rehabilitate the mine landscape."
At full capacity the Iron Baron mine is expected to produce about two million tonnes of ore each year.
Arrium Mining chief executive Greg Waters said the reopened mine was part of a $400 million program to extend the life of the company's iron ore reserves for at least the next 10 years.