Emerging oil rig evidence shows lack of regulation

Protesters hold their signs outside a Arco gas station during a rally against the Gulf oil rig disaster in Los Angeles, Wednesday, May 12, 2010. (AP Photo/Jae C. Hong) (AP Photo/Jae C. Hong)

May 13, 2010 7:28:57 AM PDT
The first firm evidence of what likely caused the disastrous Gulf of Mexico oil blowout - a devastating sequence of equipment failures - drives home a central unsettling point about America's oil industry: key safety features at tens of thousands of U.S. offshore rigs are barely regulated.

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