FILE - A tanker truck passes the Chevron oil refinery in Richmond, Calif., on March 9, 2010. More than 500 workers at the Chevron Corp. refinery in the San Francisco Bay area have told the company they will go on strike at 12:01 a.m. Monday, March 21, 2022. The United Steelworkers union says Sunday, March 20 that members of Local 5 voted down Chevron's most recent contract offer and gave notice of intent to go on strike. (AP Photo/Paul Sakuma, File)