Some 600 workers at an Exxon refinery in Texas who were locked out for ten months reached a deal with the company and will be allowed to return to work. Reuters reports that the 600 union workers, who were locked out to prevent them from going on a wildcat strike, had agreed to a key demand from Exxon: that the company had the right to determine assignments. Assignment determination was one of the sticky points during the negotiations between the United Steelworkers members and Exxon. Before, some work assignments were determined by worker seniority.…