Oil gushed from the Macondo well thousands of feet below the surface for most of the summer of 2010 before crews were finally able to control the spill. Fishing lanes were closed and the coastal tourism sector, still recovering from Hurricane Katrina, suffered dearly. Eleven rig workers were killed.
A federal report determined a faulty cement barrier was at least one of the underlying causes of the accident. In October, the government outlined seven different violations for operator BP, four for rig-owner Transocean and four for Halliburton, which worked on the cement barrier. BP sued Halliburton, which said it was looking forward to court.