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Deepwater Horizon exploded
Deepwater Horizon exploded in the Gulf of Mexico, killing 11 workers and causing an oil spill that soon became the worst environmental disaster in US history. -
Static kill operation
BP reports progress with the "static kill" operation to plug the well with mud and seal with cement. -
Total cost of damage
BP announces the total cost of damage from the oil spill to be about $6.1bn. -
Undersea residue
BP oil spill leaves undersea residue. -
Blowout preventer failed
BP blowout preventer failed and is removed spilling 206m gallons of oil into the gulf. -
BP well leak
BP well leak poses "no further risk" to environment. -
Failures
BP had many failures and is responsible in part for the disaster, but also blames other companies working on the well. -
Sealing damaged well
BP pumped cement to seal damaged well. -
Ruptured well
The ruptured well is finally sealed and is "effectively dead". -
Oil washed ashore
BP has struggled to stem the leak and oil has washed ashore along the Gulf Coast.