Officials gather at the site of an explosion and fire at a natural gas processing facility and major national pipeline hub, Wednesday, April 23, 2014, in Opal, Wyo.   (Rachel Anderson/AP)

Small Wyoming town evacuated after natural gas explosion

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A small town in southwest Wyoming was evacuated Wednesday after an explosion and fire at a natural gas processing facility and major national pipeline hub. There were no reports of injuries.
A man stands on the scene after a rig carrying diesel fuel was involved in a crash on Route 18 in Washington, Pa., Monday, April 21, 2014. The intersection was shut down after the crash involving a tractor trailer carrying diesel fuel and two trucks carrying water for natural gas drilling operations. (AP Photo/Pittsburgh Post-Gazette, Darrell Sapp)

Shale gas trucks crash in Pennsylvania

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A western Pennsylvania intersection was shut down after crash involving a tractor trailer carrying diesel fuel and two trucks carrying water for natural gas drilling operations.
Mickal Vogt of Covington, La., uses a stick to place tar balls in a jar that washed up on the shore in Orange Beach, Ala., Saturday, June 12, 2010. Large amounts of the oil battered the Alabama coast, leaving deposits of the slick mess some 4-6 inches thick on the beach in some parts. (AP Photo/Dave Martin)

Coast Guard: Gulf Coast cleanup efforts ‘far from over’

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The Coast Guard is crying foul at BP’s statement this week that active cleanup efforts to remove oil along the Gulf Coast shorelines have ended.
(Mathew Sumner/San Francisco Chronicle)

Drilling suspended after waves strike rig

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Anadarko Petroleum suspended drilling while it evaluates the status of a Gulf of Mexico drilling rig hit by heavy waves Tuesday morning.
(AP Photo/Skagit Valley Herald, Scott Terrell)

Cleanup to begin at site of Pennsylvania derailment

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Cleanup is scheduled to begin Tuesday at the site of a train derailment in northeastern Pennsylvania.
(Kamil Porembinski/Flickr)

Feds: Pipe tear caused oil refinery blast

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A 2009 explosion at a northern Utah oil refinery that knocked a neighboring home off its foundation and singed dozens of others began with a corroded pipe that went years without proper inspection, federal investigators say.
(John Davenport/San Antonio Express-News)

Pipeline violation penalties break record in 2013

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The Pipeline and Hazardous Materials Safety Administration proposed $9.78 million in civil penalties against pipeline operators for alleged violations of federal law in 2013, the agency announced this week.
(AP Photo/U.S. Coast Guard)

Coast Guard blames 2012 Arctic rig grounding on bad decisions

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Coast Guard investigators on Thursday rapped Shell Oil Co. and its contractors for failing to heed the dangers of towing a drilling rig across stormy Alaska waters in late 2012 — a voyage that ended when it ran aground on New Year’s Eve.
Emergency vehicles line a roadway in sight of the Williams Northwest Pipeline plant in the distance, Monday, March 31, 2014, in Plymouth, Wash.  All employees were evacuated and accounted for after an explosion Monday morning at the plant, where liquefied natural gas is converted into vapor. (AP Photo/Tri-City Herald, Bob Brawdy)

Officials seek clues in natural gas facility blast

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State and federal regulators looking for what caused an explosion at a liquefied natural gas facility on the Washington-Oregon border began interviewing injured workers Tuesday as an evacuation order covering hundreds of nearby residents was lifted.
A massive fire from a PG&E pipeline explosion roars through a mostly residential neighborhood in San Bruno, Calif. in Sept. 2010. (AP Photo/Paul Sakuma, File)

Utility criminally charged in fatal pipeline blast

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Pacific Gas and Electric Co. was charged on Tuesday with federal felony counts involving safety violations linked to a deadly 2010 natural gas pipeline explosion in the San Francisco Bay Area.