The Deepwater Horizon rig disaster caused the deaths of 11 crew and a massive oil spill in the Gulf of Mexico.
Since the 20 April catastrophe there has been much discussion in US Congressional hearings and the media about the sequence of events that led up to it.
Here is a summary of what...
The Gulf of Mexico oil spill is the worst environmental disaster the US has faced, a senior official has said.
White House energy adviser Carol Browner also said the US was "prepared for the worst scenario" that the leak might not be stopped before August.
BP is to try a new tactic after its...