Guardian: Federal regulators say corrosion on the outside of an oil pipeline was the cause of a major crude spill on the Santa Barbara coast last year.
The Pipeline and Hazardous Materials Safety Administration issued preliminary findings Wednesday of the 19 May spill.
The agency says that the spill occurred in a 2-foot section of pipe after pumps were shut down and restarted.
The volume of oil moving through the pipe surged, and pressure increased when the pump was restarted.
The report notes...