POSTED: Wednesday, April 20, 2011 - 11:13pm
UPDATED: Thursday, April 21, 2011 - 8:28am
Baton Rouge, La (NBC33) — The Crisis on the Coast started late on April 20, 2010 .
That's when the blowout preventer on BP's Macondo Well failed.
The explosion killed eleven workers on the Deepwater Horizon rig, and triggered the biggest environmental disaster in history.
Here's a look back on how events unfolded.