Cementing Operation News Today : Breaking News, Live Updates & Top Stories | Vimarsana

It's been tough all along to get answers on the cause of this blast. we still don't have them. one reason why, there are three powerful companies in charge of this operation. the drilling rig is owned by transocean. the blowout preventer that failed owned by transocean, made by someone else. the cementing operation, which looks increasingly crucial in this equation, run by halliburton. but the overall operation, the decisions, the key decisions, bp was in charge of that. today, all three companies tried to deflect responsibility on each other. as the leaders of the three key companies involved...

Permanent holder and bp have the relationship with the mms, if there was a discussion between somebody and the mms about whether or not it was appropriate to proceed in a particular fashion, that conversation would have taken place between bp and the mms. >> reporter: halliburton was in charge of the cementing operation, but halliburton's executives also deflected. >> if a discussion took place, it would be with the leaseholder and the -- >> what knowledge do you have about a decision being made to remove the mud before the plug was finished? >> the only information that we have that it was pa...

>> you mentioned a moment ago, the government is wanting answers from hal burtliburton f capping this leak. what can we expect there? >> reporter: henry waxman asked halliburton for all of the documents relating what it is doing in the cementing operation. the cementing operation essentially encloses the casing and prevents leaks, prevents -- it fastens the casing on to the hole at the bottom of the ocean to prevent gas and fuel from spewing upward and causing an explosion like this. halliburton, they had personnel on the rig at the time this he were doing cementing operations, halliburton sai...