Cause of oil spill probed as cleanup of California coast continues

Workers gather on a cliff overlooking Refugio Beach as efforts continue to remove the oil that has spilled an estimated 100,000 gallons off the Santa Barbara County coast in Goleta, California on May 22, 2015. A unified command center established for the spill said the worst-case estimate is that 2,500 barrels of oil was released from a pipeline operated by Plains All American. Sheen is spread several miles from the site of the spill off the coast of Refugio State Beach. Photo by Jim Ruymen/UPI