A number of charges filed against companies and employees following a 2012 oil platform blaze have been thrown out.
Three people were killed after a fire which broke out on a platform owned by Black Elk Energy Offshore Operations.
According to reports, serious charges remain for some in connection to the fire, four years ago.
Criminal charges involving safety and inspection requirements were dismissed earlier this month against two companies that did contract work on the platform, Grand Isle Shipyards and Wood Group PSN, as well as two people who worked on the platform Don Moss and Curtis Dantin.
Black Elk and Grand Isle Shipyards remain charged with involuntary manslaughter.
All of the defendants were charged with Clean Water Violations.
Black Elk also faces charges involving safety requirements, as does platform workers Christopher Srubar.
Black Elk Energy’s platform was located about 17 miles from Grand Isle, Louisiana, in 52feet of water.
It had been “shut in” and wasn’t producing oil at the time of the explosion.