January's unscheduled three-week blast furnace shutdown hit Algoma Steel hard, cutting metal production by about 150,000 tons, the Sault Ste. Marie steelmaker disclosed June 20. "As previously disclosed in January 2024, the company experienced an unplanned outage at its blast furnace in connection with a utility corridor collapse at its coke-making facility," the company said in a news release announcing its fourth-quarter results. "Management estimates the resultant outage negatively impacted hot metal production in the quarter by approximately 150,000 tons and reduced adjusted EBITDA by approximately $120 million to $130 million," the release said. EBITDA stands for "earnings before interest, tax, depreciation, and amortization." It's considered an important indicator of a company's operating activities. "Algoma has been working closely with relevant insurance providers as they complete assessments.