BP has been directly involved in several major environmental and safety incidents. Among them were the 2005 Texas City Refinery explosion, which caused the death of 15 workers and which resulted in a record-setting OSHA fine; Britain's largest oil spill, the wreck of Torrey Canyon in 1967; and the 2006 Prudhoe Bay oil spill, the largest oil spill on Alaska's North Slope, which resulted in a US$25 million civil penalty, the largest per-barrel penalty at that time for an oil spill.[7]