cement's

BP said in its internal report on the disaster that it released last month that its centralizer decision probably did not contribute to the cement's failure.

Doug Martin: BP Interfered With Critical Efforts To Stop Gulf Oil Spill AP 2010

BP and others have said the cement's failure to keep oil and gas from entering the well was one of the causes of the accident.

Halliburton: BP Contract Offers Gulf Oil Spill Liability Protection, Analysts Say AP 2010

The independent investigators do not address other decisions that could have contributed to the cement's failure and the eventual blowout, such as BP's decision to use fewer centralizers than recommended by Halliburton.

Halliburton Cited By Oil Spill Commission For Deepwater Horizon Oil Spill Blowout AP 2010

BP said in its internal report on the disaster that it released last month that its centralizer decision probably did not contribute to the cement's failure.

Doug Martin: BP Interfered With Critical Efforts To Stop Gulf Oil Spill AP 2010

BP and others have said the cement's failure to keep oil and gas from entering the well was one of the causes of the accident.

Halliburton: BP Contract Offers Gulf Oil Spill Liability Protection, Analysts Say AP 2010

BP and others have said the cement's failure to keep oil and gas from entering the well was one of the causes of the accident.

Halliburton: BP Contract Offers Gulf Oil Spill Liability Protection, Analysts Say AP 2010

The independent investigators do not address other decisions that could have contributed to the cement's failure and the eventual blowout, such as BP's decision to use fewer centralizers than recommended by Halliburton.

Halliburton's Gulf Oil Spill Admission: Critical Test Skipped On Deepwater Horizon Before BP Oil Spill AP 2010

BP and others have said the cement's failure to keep oil and gas from entering the well was one of the causes of the accident.

Halliburton: BP Contract Offers Gulf Oil Spill Liability Protection, Analysts Say AP 2010

The commission then turned and asked Halliburton to provide its own test results and those haven't been released to the public as yet, but the spill commission says Halliburton's own tests were casting doubt on the cement's ability to set and harden at the bottom of the oil well.

Panel: Tests Warned Of Cement Flaws Before Blowout 2010

Newman also said BP's contractor, Halliburton Inc., was responsible for encasing the well in cement, putting a temporary plug in the top of the well and ensuring the cement's integrity.

BP Points Fingers Ahead Of U.S. Hearing 2010