Fire at the Chevron Refinery in Richmond as seen from Tiburon, Calif. on Monday August 6th, 2012. (Photo: John Storey, Special To The Chronicle / SF)
Smoke from the Chevron refinery fills the sky above Richmond after a series of explosions beginning around 6:15 p.m. No one was killed, Chevron said. (Photo: Lance Iversen, The Chronicle / SF)
(AURN) -- A major fire in Richmond, California sent hundreds of residents in the area to local hospitals suffering from breathing problems. Billowing smoke filled the sky after the Chevron refinery went ablaze Monday. Reports say the accident was triggered by a diesel leak in the processing plant where three employees suffered minor burns with no major injuries to report.