Halliburton and BP Knowingly Used Shoddy Concrete on Oil Well 3.23K Jeff Neumann 10/29/10 04:04AM Filed to: Investigations Investigations oil spill Bp Halliburton Disasters gulf of mexico Liars Business Macondo deepwater horizon Gettypic A presidential commission yesterday found that BP and Halliburton knew that the cement mixture used to seal the Macondo well before the oil spill had "repeatedly failed lab tests." You should probably grab some Halliburton shares while they're hot.