Occidental Petroleum
Occidental Petroleum Corporation is an international oil and gas exploration and production company - the fourth-largest in the U.S., based on market capitalization - and our OxyChem subsidiary is a major North American chemical manufacturer.
Oxy is an industry leader in applying advanced technology to boost production and access hard-to-reach reserves. With more than 30,000 employees and contractors on four continents, we are committed to being the employer, partner and neighbor of choice.
http://www.oxy.com