right|thumb|250pix|kerr-mcgee corporation logo the kerr-mcgee corporation, founded in 1929, was an oklahoma energy company involved in oil exploration, production of crude oil, natural gas, perchlorate, and uranium mining and milling in the us and abroad. on june 23, 2006, anadarko petroleum corporation acquired kerr-mcgee in an all-cash transaction totaling $16.5 billion plus $2.6 billion in debt and all operations moved out of oklahoma. ==history== the company later known as kerr-mcgee was founded in 1929 as anderson & kerr drilling company by oklahoma businessman-politician robert s. kerr (1896-1963) and oil driller james l. anderson. when dean a. mcgee (1904-1989), a former chief geologist for phillips petroleum, joined the firm in 1946, it changed its name to kerr-mcgee oil industries, incorporated. the company initially focused mostly on off-shore oil exploration and production, being one of the first companies to use drillships in the gulf of mexico, and later one of the first companies to use a spar type platform in the area.  with the acquisition of the oryx energy company of dallas, texas in 1999, kerr-mcgee gained more onshore assets, as well as significant assets in several foreign areas, most notably algeria and western kazakhstan. later acquisitions of hs resources and westport resources corp. established the base of operations in denver, colorado and added large resource areas throughout the rocky mountains. until 2005, kerr-mcgee had two major divisions: chemical and oil-related. on november 21, 2005, the chemical division of the company, based in oklahoma city, was sold off by ipo as tronox, thereby making oklahoma city home to the administrative side of kerr-mcgee, while all exploration and production management was located in denver and houston. on june 23, 2006, anadarko petroleum corporation, based in the woodlands, texas acquired kerr-mcgee in an all-cash transaction totaling $16.5 billion plus the assumption of $2.6 billion in debt. kerr-mcgee shareholders approve the offer on august 10, 2006 and kerr-mcgee ceased to exist as an independent entity. all operations with the exception of tronox which was spun off as a separate company in 2005 moved out of oklahoma. ===kerr-mcgee corp. v. navajo tribe===  kerr-mcgee v. navajo tribe, 471 u.s. 195 (1985), was a case in which the supreme court of the united states held that an indian tribe is not required to obtain the approval of the secretary of the interio
Companies_based_in_Oklahoma_City,_Oklahoma Companies_disestablished_in_2006 Companies_established_in_1929 Defunct_companies_based_in_Oklahoma Economy_of_Denver,_Colorado Economy_of_Houston,_Texas Mining_in_Oklahoma Natural_gas_companies_of_the_United_States Oil_companies_of_the_United_States Pollution_in_the_United_States Uranium_mining_on_the_Navajo_Nation