Halliburton and BP knew weeks before the fatal explosion of
the Macondo well in the Gulf of Mexico that the cement
mixture they planned to use to seal the bottom of the well
was unstable but still went ahead with the job, the
presidential commission investigating the accident said on
Thursday.
In the first official finding of responsibility for the
blowout, which killed 11 workers and led to the largest
offshore oil spill in American history, the commission staff
determined that Halliburton had conducted three laboratory
tests that indicated that the cement mixture did not meet
industry standards.
The result of at least one of those tests was given on March
8 to BP, which failed to act upon it, the panel's lead
investigator, Fred H. Bartlit Jr., said in a letter delivered
to the commissioners on Thursday.
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