NEW ORLEANS (AP) -- Transocean Deepwater Drilling Corp. has lost a round in its fight to avoid handing over documents to a government board investigating the 2010 Deepwater Horizon explosion.
Transocean is appealing a federal court order enforcing a subpoena of the documents by the U.S. Chemical Safety and Hazard Investigation Board.
The 5th Circuit Court of Appeals on Tuesday refused to stay the document handover while the appeal is pending.
The documents were collected by a Transocean internal investigation team. The 5th Circuit said Transocean failed to justify action that would delay the safety board's report on the explosion, which killed 11 and spawned the nation's worst offshore oil spill.
Transocean owned the Deepwater Horizon drilling rig, which exploded and sank over BP's Macondo well. Transocean lawyers were not immediately available for comment.