largest oil spill
An investigation by the United States Coast Guard has concluded the 
 in the history of the petroleum industry was partly the result of a "poor safety culture" aboard the "Deepwater Horizon" oil rig. The April 2010 explosion aboard the rig, which is located in the Gulf of Mexico, triggered a disaster that led to widespread environmental damage.
U.S. Coast Guard investigation finds 'poor safety culture' contributed to Deepwater Horizon disaster