The amended alleges gross negligence, willful misconduct and other claims in the design, construction and operation of the rig, as well as in the response to the disaster.
The defendants include various divisions of oil giant BP (formerly British Petroleum), Transocean, Ltd. (the owners/operators of the Deepwater Horizon), Halliburton Energy (which was involved in "cementing" operations to cap the oil rig when the explosion occurred) and Cameron International Corporation (manufacturers of the rig's blow-out-preventers, which failed to operate properly and prevent the oil spill).
Similar lawsuits are planned for Texas, Alabama and Mississippi, as the devastation from the oil rig disaster continues to grow.


