 (CC) Photo: David Shankbone Petroleum refinery in Haifa, Israel |
 (PD) Photo: Reliance Industries, Ltd. Reliance Industries petroleum refinery in India |
 (PD) Photo: David Parsons, U.S. Department of Energy A part of the Diamond Shamrock refinery in Colorado |
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 (PD) Photo: United States Department of Agriculture Hydrocracking unit in a refinery |
 (CC) Photo: Valero Energy Corporation Fluid catalytic cracker in Valero Energy petroleum refinery in Tennessee |
 (GNU) Photo: U.K. Association for School Science Vacuum distillation column in Exxon-Mobil refinery in Fawley, England |
 (PD) Image: Milton Beychok Process drawing of a typical vacuum distillation column |
 (PD) Photo: U.S. Environmental Protection Agency Tosco refinery in Northern California |
 (PD) Photo: U.S. Energy Information Administration Chevron Oil's Pascagoula, Mississippi refinery (at night) |
 (CC) Photo: Walter Siegmund Anacortes, Washington refinery |
 (CC) Photo: Richard Saxon Portion of a petroleum refinery near Denver, Colorado |
 (PD) Photo: FEMA,Jacinta Quesada Murphy Oil refinery in St. Bernard Parish, Louisiana |
 (CC) Photo: Bill Lapp Part of refinery in St. John, New Brunswick |
 (CC) Photo: David B. King Large refinery on the Mississippi River |
 (CC) Photo: Taran Rampersad Petrotrin refinery at Point Lisas in Trinidad and Tobago |
 (CC) Photo: Eric Ishii Eckhardt Refinery in Minnesota |
 (CC) Photo: Richard Eriksson Chevron's Burnaby refinery in Vancouver, Canada. |
 (CC) Photo: Sebastiano Pitruzzello An oil refinery in Sicily, Italy. |
 (CC) Photo: Michael Renner OMV refinery in Schwechat, Austria |
 (CC) Photo: Ross Grady Oil refinery in Clavert City, Kentucky. |
 (PD) Photo: U.S. Security Exchange Commission A four-drum delayed coking unit. Each of the two derricks above the drums contains two drill stems. |
