The U.S. official said two further Americans survived the four-day crisis at an insecure oil rig at the facility.
The US Department of Justice is looking into safety failures at one rig.
Mr Osborne made the announcement at a former oil rig construction yard at Nigg which is set to become a service hub for the energy industry, employing an estimated 2, 000 people by 2015.
This design tackles current environmental issues, specifically at abandoned oil rig structures all around the world.
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And the Coast Guard will also hear from BP and Transocean managers who were on the rig at the time of the blast.
The risks of a spill are lower because the target is primarily gas, and the shallow water depth (approx. 100 ft) allows the blowout preventer to be located on the rig at the surface.
The company's case is hardly helped by the fact that Robert Kaluza, BP's well manager on board the rig at the time of the disaster, has declined to testify in front of an investigation into it, pleading his fifth-amendment right to avoid self-incrimination.
The barbecue rig now at San Antonio would be dispatched to Texas City.
Repsol will be drilling in waters that are deeper than those in which the Deepwater Horizon rig operated at the time it exploded last year.
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The Norwegian company, Statoil, says it will not accept delivery of a rig built at the yard because the work has not been completed to its satisfaction.
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The Baker Hughes March 22 weekly report put the natural gas rig count at 418 down 13 on the week and just above the recent 13 year low.
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According to the ETF Finder at ETF Channel, RIG makes up 5.32% of the Oil Services ETF ( AMEX: OIH )which is trading lower by about 3.3% on the day Tuesday.
According to the ETF Finder at ETF Channel, RIG makes up 5.32% of the Oil Services ETF ( AMEX: OIH )which is trading up by about 1.7% on the day Wednesday.
And just think about this: Sometime down the line, you could potentially live in a converted oil silo as your primary residence and keep a waterfront vacation property at a retrofitted oil rig.
According to the ETF Finder at ETF Channel, RIG makes up 10.24% of the Oil Services HOLDRS ETF ( AMEX: OIH) which is trading lower by about 2.4% on the day Monday.
According to the ETF Finder at ETF Channel, RIG makes up 8.16% of the Oil Services HOLDRS ETF ( AMEX: OIH) which is trading lower by about 3.1% on the day Wednesday.
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Oil continued flowing at the rate of about 5, 000 barrels per day into the Gulf of Mexico on May 3, following the April 20 explosion at the Deepwater Horizon rig south of the Mississippi Delta that caused it to sink and left its well leaking oil.
Over the past week damning evidence has emerged, in documents detailing a settlement between Barclays and regulators in America and Britain, that employees at the bank and at several other unnamed banks tried to rig the number time and again over a period of at least five years.
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The voice and gesture-controlled rig is targeted at maintenance engineers, the emergency services and other organisations.
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At that point, the rig calculates where light entered the polymer by measuring how much it has diminished during its travel time, and then composes an image from that data.
This is what this data is supposed to monitor, but the well flow evidence would appear to have been ignored, because at this point the BP rig supervisors should have gone to a well kill operation and started to pump heavy mud back into the well bore to restore the primary control mechanism.
In its plea, Transocean admitted that its crew on the Deepwater Horizon rig was acting at the direction of BP's well site leaders and were "negligent in failing to investigate fully clear indications that the Macondo well was not secure and that oil and gas were flowing into the well, " the Justice Department said.
At least two workers have died in an explosion on an oil rig in the Gulf of Mexico, and at least four others are injured.
But the project has caused anxiety in the US, particularly following the 2010 leak at BP's Deepwater Horizon rig, which dumped millions of barrels of oil into the Gulf of Mexico.
Still, the starboard touchpad takes some getting used to -- more than once we found ourselves brushing up against the area below the keyboard, staring in bewilderment at the unmoving cursor on the rig's screen.
In a letter to Steven Newman, CEO of Transocean, Rahall said records from the rig indicate 18 people at work on the second shift with "zero engineers, electricians, mechanics or subsea supervisors" on duty the night of the explosion.
The decision came in a case concerning the physical and verbal abuse directed at Joseph Oncale, an oil-rig roustabout, by fellow male workers.
Plus the rig also must be kept at the same position, so energy must be expended fighting the ocean currents, and mud must be pumped, workers helicoptered on and off the rig, drilling materials delivered, etc.
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