The Whyalla steelworks in South Australia is cutting hundreds of jobs after its blast furnace did not restart.
Reports put the number of positions at risk at 500 or more, and some say over 600. The full scale of the cuts is not yet clear.
At least 146 workers are confirmed as losing their jobs permanently.
The furnace shutdown forced the company to make the cuts. The steelworks has not yet made an official announcement about the job losses, but one was expected soon.
The job cuts come after the failed restart of the blast furnace at the site.