A Filipino oil worker  died as a result of injuries sustained in the Nov. 16 explosion on an oil rig off the coast of Louisiana, the second fatality in the incident. One man is still missing and three remain in serious condition after suffering major burns in the blast.

The U.S. Department of Interior has called on Black Elk Energy Offshore Operations, which owns the rig, to take “immediate steps to improve its safety performance.”

“Black Elk has repeatedly failed to operate in a manner that is consistent with federal regulations,” said James A. Watson, director of the Bureau of Safety and Environmental Enforcement.

Federal investigators are still investigating the cause of the incident.

The drilling rig injury lawyers at Schechter, Shaffer & Harris, L.L.P., Accident & Injury Lawyers represent offshore workers and families of offshore workers killed in accidents.