Detailed text transcripts for TV channel - CNN - 20100502:22:47:00
Worked. and they simply haven't worked. officials say that they are frustrated. they don't know why the submersibles are not working. there's another backup system that could be in place and there's another control switch that could shut off the well head in the event that the rig is damaged. neither this rig nor any rig in the gulf of mexico has those because the u.s. law does not require them. other countries have them and some environmentalists believe that it could have happened. >> there are going to be a lot of changes and assessing to see how this could be corrected so it doesn't happen...
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