Petroleum Refineries in the U.S.This feature layer, utilizing data from the Energy Information Administration (EIA), displays the locations of all the petroleum refineries in the U.S.  Per EIA , "Petroleum refineries change crude oil into petroleum products for use as fuels for transportation, heating, paving roads, and generating electricity and as feedstocks for making chemicals. Refining breaks crude oil down into its various components, which are then selectively reconfigured into new products. Petroleum refineries are complex and expensive industrial facilities. All refineries have three basic steps: separation, conversion and treatment.Chevron USA RefineryData currency: This cached Esri service is checked monthly for updates from its federal source (Petroleum Refineries)Data modification: None For more information, please visit: Oil and petroleum products explainedFor feedback: ArcGIScomNationalMaps@esri.comEnergy Information AdministrationPer EIA, "The U.S. Energy Information Administration (EIA) collects, analyzes, and disseminates independent and impartial energy information to promote sound policymaking, efficient markets, and public understanding of energy and its interaction with the economy and the environment."