West Jefferson also played a major role in treating oil rig workers who were injured in the Deepwater Horizon Explosion on April 20, 2010. Two of the injured men were brought to the ER by ambulance around 3:20 a.m., and the other two were flown in by helicopter around 5:45 a.m. All four workers were treated and released by 11:15 on April 21, 2010.