Cameron International Corp. could not remove the blowout preventer machine from the sunken Deepwater Horizon rig on time. And because of the delay, it lost a bid.

Unified Command, which is a joint oil-spill response attempt of the U.S. Coast Guard and BP Plc, has delayed the retrieval plans because of the fear of losing important evidences.

Cameron, which is the maker of the blowout preventer equipment, has requested U.S. District Judge, Carl Barbier to push back the retrieval program in order to collect more photographs and other evidences from the machine.

The preventer was supposed to prevent the leakage of the natural gas, but it stopped working and could not stop the surge of the gas. The gas caught fire and damaged the Deepwater Horizon. By coming in contact with the gas, at least 11 workers were killed.

This is considered one of the world’s biggest accidents in the history of offshore oil spill.

Thad W. Allen, the retired Coast Guard Admiral said the due to bad weather conditions, replacing the equipment with a new one is quite difficult. He also said that it may delay the job by two to three days, which means that the relief process will end by the next week.