At 6:15 Pacific time last evening, crude distillation unit Number 4 at Chevron's Richmond, California, petroleum refinery exploded. From the Times:
"I walked outside and saw what looked like a lot of steam coming out of Chevron, way more than usual. I thought they must have blown a boiler," said Ryan Lackay, a 45-year-old employee at a chemical plant next door to the refinery.
