U.S. Steel announced Wednesday that it will restart one of two blast furnaces and the steelmaking facilities at its Granite City Works in Illinois, recalling about 500 employees.

The mill restart comes on the heels of President Donald J. Trump’s announcement that he would seeking tariffs of 25 percent on imported steel and 10 percent on aluminum. Getting the mill running again could take up to four months, the company said.

“Our Granite City Works facility and employees, as well as the surrounding community, have suffered too long from the unending waves of unfairly traded steel products that have flooded U.S. markets,” U.S. Steel President and CEO David B. Burritt said in a prepared statement.