Constitution asserts national ownership of subsoil resourcesFeb 5, 1917Labels: Mexican Constitution, Article 27Mex Law
Cárdenas orders expropriation of foreign oil propertiesMar 18, 1938Labels: L zaro, Expropriation DecreeState DeptBritannica
Presidential decree creates Petróleos Mexicanos (PEMEX)Jun 7, 1938Labels: Petr leos, Presidential decreePEMEX HistoryBritannica
PEMEX begins operations in the expropriated industryJun 20, 1938Labels: PEMEX, Operations takeoverState DeptOil Exprop
International pressure and marketing difficulties follow expropriationJan 1, 1939Labels: International pressure, Market accessState DeptTIME
Mexican Supreme Court upholds legality of expropriationDec 2, 1939Labels: Mexican Supreme, Judicial rulingState DeptOil Exprop
U.S.–Mexico claims settlement framework advances compensation processNov 19, 1940Labels: U S, Claims frameworkState DeptState Dept
New petroleum law reinforces federal control of the industryJun 18, 1941Labels: Petroleum Law, Federal jurisdictionAntorchaOil Exprop
PEMEX starts building new state-owned refining capacityJan 1, 1943Labels: Refining expansion, Salamanca projectRIAMA
Salamanca refinery begins operations under PEMEXJul 30, 1950Labels: Salamanca refinery, PEMEX-builtRIAMA
State oil control becomes durable national economic institutionJan 1, 1960Labels: State oil, Economic institutionBritannicaPEMEX Context