Cliffs Natural Resources Inc., a major operator of iron ore mines in Minnesota, said it would write down the value of its coal and iron ore assets by $6 billion due to weak prices, putting it in breach of debt covenants and sending its shares down around 7 percent.
Cliffs said the non-cash charge would increase its debt-to-capital ratio over the 45 percent threshold set by its credit facility, and it was working with bankers to amend the covenant.
"... We believe this will result in higher interest rate on revolver borrowings going forward," FBR Capital Markets analysts wrote in a note.
Cliffs said the third-quarter charge was related to iron ore for export and coal used in steel-making.
The company's shares hit a low of $8.77 before recovering a little to $8.91. They have more than halved this year.
Cliffs Natural replaced its chief executive in July and said it would sell underperforming assets after New York-based fund Casablanca Capital triumphed in a proxy battl
"It essentially confirms ... that the vast bulk of the company's investments in the last decade prior to the appointment of new CEO Lourenco Goncalves was misspent," BMO Capital Markets analyst Tony Robson wrote in a note.
Cleveland-based Cliffs Natural employs about 1,850 people with a payroll of $256 million at mines in Silver Bay, Babbitt, Eveleth, Forbes and Hibbing. It has said it has no plans to cut workers at the mines.
Coal prices have halved over the past three years as a result of sluggish demand and rising output from Australia, Indonesia, South Africa, Colombia and the United States.