So the Macondo well had kicks over 7,000 psi, which nearly overwhelmed the mud pumps. But BP figured that second rate cement and only 6 centralizers would be enough to shut in the well. When pressure tests came back ambiguous, management said "it's good. Let's get out of here." They sure saved a lot of money.
Every worker on the rig had STOP WORK rights but not a single fellow due to being fired did anything and believe me they are still taking chances in the Gulf!