Topic - Patterson - Uti

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FILE - In this Jan. 22, 2018, file photo from video by Tulsa's KOTV/NewsOn6.com, fires burn at an eastern Oklahoma drilling rig near Quinton, Okla. The family of one of five workers who were killed in the explosion says the drilling company didn't act upon multiple warnings that its safety equipment was in disrepair. Parker Waldridge's family alleges in a Dec. 4, 2018, amendment to their wrongful death lawsuit that a &quot;cascade of errors and multiple departures from safe drilling practices&quot; by drilling company Patterson-UTI Drilling led to the blowout. (Christina Goodvoice/KOTV/NewsOn6.com via AP, File)

Lawsuit: Gas company knew rig was unsafe before explosion

Associated Press

Lawsuits: Cheaper drilling plan used in gas rig explosion

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US agency cites 3 companies in Oklahoma rig explosion

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In this photo provided from a frame grab from Tulsa's KOTV/NewsOn6.com, fires burn at an eastern Oklahoma drilling rig near Quinton, Okla., Monday Jan. 22, 2018. Five people are missing after a fiery explosion ripped through a drilling rig, sending plumes of black smoke into the air and leaving a derrick crumpled on the ground, emergency officials said. (Christina Goodvoice, KOTV/NewsOn6.com via AP)

Driller in Oklahoma explosion has history of fatal accidents

By SEAN MURPHY - Associated Press