BP is reported to be funnelling about 6,000 barrels of oil per day from Deepwater Horizon following the initial qualified success of its top hat emergency containment procedure - up to one half of the estimated rate of spill. Whilst cautioning against over-optimism I would estimate that further improvement is possible over the next few days as vents on the containment cap are closed down. I'd like to take this opportunity to thank BP for its skill, determination and professionalism in obviating the worst effects of the spill pending a complete solution to the problem in due course.