 petrÃ³leos mexicanos (trademarked and better known as pemex, ), which translates to mexican petroleums, is the mexican state-owned petroleum company, created in 1938 by nationalized petroleum and the expropriation of all private foreign and domestic companies at that time. pemex has a total asset worth of $415.75 billion, and is the world's second largest non-publicly listed company by total market value, and latin america's second largest enterprise by annual revenue as of 2009, surpassed only by petrobras (the brazilian national oil company).largest companies in latin america in 2009 the majority of its shares are not listed publicly and are under control of the mexican government, with the value of its publicly listed shares totaling $202 billion in 2010, representing approximately one quarter of the company's total net worth.piw ranks the world's top oil companies emilio lozoya austin is the current ceo of pemex. == history == thumb|left|typical pemex gas station  asphalt and pitch had been worked in mexico since the time of the aztecs. small quantities of oil were first refined into kerosene around 1876 near tampico. by 1917 commercial quantities of oil were being extracted and refined by subsidiaries of the british pearson and american doheny companies, and had attracted the attention of the mexican government
Automotive_fuel_brands Companies_based_in_Mexico_City Companies_established_in_1938 Government-owned_companies_of_Mexico National_oil_and_gas_companies