There are many responsible. BP has taken most of the public blame so far.
Responsible parties include:
BP (operator and primary developer): not ensuring proper safety standards on the rig. Continual lying about the extent of the spill.
Transocean (personnel): ran the oil rig incorrectly. Workers either not trained effectively enough, were overworked or did not have the right expertise.
Halliburton (contractors): were in charge of cementing the Macondo well.
The government: for not having stringent enough safety laws.
Government inspectors: accused of being corrupt, and having taken bribes or 'gifts' to look the other way.
Coast Guard: understated or lied about the result of the accident, may have possibly delayed clean-up efforts.
The operator of a drilling operation, in this case, BP, has full responsibility for accidents occurring as a result of drilling and cementing. Generally, the operator is given all the information and has final approval of actions on the rig.
Now, there are a number of ongoing investigations which might find that the reasons for the blow out was in part due to a failed blow out preventer, which is manufactured by Cameron. Halliburton may be blamed in part, as they were completing a cementing operation before the accident.
The U.S. Government has named BP as the responsible party in the incident, and officials have said the company will be held accountable for all cleanup costs resulting from the oil spill.
The operator of the Deepwater Horizon Rig, was British Petroleum corporation, so they are responsible for stopping the leak and cleaning up the spill.
However, it is possible that others have some blame in causing the accident and so their employees, material or equipment may be in part to blame for the blow our. The oil rig was owned by Transcontinental, and they may be sued for making wrong decisions on the day of the blow out. The company in charge of cementing is Halliburton, and since investigations have indicated that the cement used to seal the last pipe (called casing tubing) likely failed, Halliburton may be sued.
No one is to blame. It was just something that happened. Yes, maybe it could have been prevented by proper checking and tests, but it wasn't. It was an accident of nature.
BP oil company
BP is responsible for the oil spill in the gulf
No, there was an oil spill in the Gulf of Mexico.
BP British Petroleum is responsible for the oil spill, which occurred when one of the oil rigs blew up and ripped open a pipe, which led to oil flowing into the Gulf of Mexico.
Which gulf and which oil spill? See related questions.
how would the oil spill in gulf Mexico affect the dolphins.
What caused the the oil spill in the Gulf of Mexico was an oil well blowout and explosion.
the last oil spill was the oil spill in the Gulf Of Mexico
The gulf oil spill started on the 20th April 2010.
In the gulf of mexico!
Of course. Haven't you heard about the BP oil spill in the Gulf of Mexico?
yes the oil spill was capped
The Gulf of Mexico.