"‘Secret Deal’ in California Would Weaken Regulations for Oil Refineries"
"On August 6, 2012, a corroded, eight-inch pipe at Chevron’s oil refinery in Richmond, California, cracked open, sending a white cloud hundreds of feet into the air. The cloud quickly engulfed the 19 refinery firefighters, managers and other workers who had been trying to fix what had been a small leak in the pipe."