Where is the headquarters of the company responsible for the Red Butte oil spill?
Chevron Corporation Chevron Corporation () is an American multinational energy corporation. One of the successor companies of Standard Oil, it is headquartered in San Ramon, California, and active in more than 180 countries. Chevron is engaged in every aspect of the oil, natural gas, and geothermal energy industries, including hydrocarbon exploration and production; refining, marketing and transport; chemicals manufacturing and sales; and power generation. Chevron is one of the world's largest oil companies; as of 2014 , it ranked third in the Fortune 500 list of the top US closely held and public corporations and sixteenth on the Fortune Global 500 list of the top 500 corporations worldwide. It was also one of the Seven Sisters that dominated the global petroleum industry from the mid-1940s to the 1970s.
United Gas Corporation United Gas Corporation was a major oil company from its inception in 1930 to its hostile takeover and subsequent forced merger with Pennzoil in 1968. Headquartered in Shreveport, Louisiana, United and its major subsidiaries, Union Producing Company, United Gas Pipeline Company, Atlas Processing, UGC Instruments, and Duval Mining, performed integrated exploration, production, processing, and distribution of oil and natural gas and other raw materials. Second only to Gulf Oil in size and scope, United Gas was one of the first natural gas transmission companies. In 1968, United was merged into Pennzoil, and the firm was renamed Pennzoil United, Inc. The retail gas distribution assets of United were spun off into Entex Energy in 1970. United Gas Pipeline stock was distributed to Pennzoil shareholders in 1974, and that company was eventually restructured as United Energy Resources, Inc., which was, in turn, acquired by Midcon Corporation.