On 20 April 2010 BP 's offshore Deepwater Horizon oil rig exploded killing eleven workers and precipitating the largest accidental offshore oil spill in the history of the petroleum industry . On 3 May the Louisiana Bucket Brigade ( LABB ) publicly released the Oil Spill Crisis Map , the first application of the Ushahidi platform in a humanitarian response in the United States
largest accidental offshore oil spill
Deepwater Horizon oil spill
Ushahidi