Anatomy Of A Disaster
FILE - In this undated file photo released by Transocean, the ultra-deepwater semi-submersible rig Deepwater Horizon is shown operating in the U.S. Gulf of Mexico. The cause of the April 20 explosion that killed 11 people and caused the worst offshore oil spill in U.S. history remains a mystery. But as more information trickles out, the image of a high-stages, high seas venture collapsing in disarray is sharpening. (AP Photo/Transocean)
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