The United Steelworks have ratified a new four-year labor contract with ArcelorMittal. The new agreement replaces an existing contract that expired on Sept. 1 and will remain in effect until Sept. 1, 2022, ArcelorMittal said in a Nov. 29 statement. “ArcelorMittal is pleased the new agreement has been ratified by union membership,” ArcelorMittal said in