PITTSBURGH >> U.S. Steel Corp. and the United Steelworkers union have announced tentative agreement on a new contract covering about 18,000 workers at more than a dozen facilities across the country.

Neither side released details about the pact pending ratification by members of more than two dozen union locals at the facilities.

The contract covers thousands of workers at the company’s domestic flat-rolled and iron ore mining facilities as well as workers at tubular operations in Fairfield, Ala.; Lorain, Ohio; and Lone Star, Texas.

U.S. Steel President and CEO Mario Longhi called the pact “in the best interest of our company, our stakeholders and our employees.”

“We believe this competitive three-year contract further supports the mutual success we have had with the USW in pursuing our Carnegie Way efforts and confronting unfair trade that is significantly impacting our industry,” he said in a statement.

Union President Leo Gerard said in a statement that it had been “a difficult year and a difficult round of bargaining.” He said, however, that he was “proud of the way the brothers and sisters of the USW stood up and demanded fair treatment.”