Cheryl Anderson took oil spill data analysis to a level worthy of a world class offshore program. In my opinion, Cheryl was the top analyst in the history of the OCS program, a true Hall of Famer. Regardless of the politics of the day, she always stuck to the facts and resisted “spin,” and that was a trait her colleagues greatly admired.
Cheryl retired at the end of 2010 and her final update, with assistance from 2 other OCS program icons, Melinda Mayes and Bob LaBelle, was published in June 2012. That update is attached.
ITOPF also deserves mention for their comprehensive tanker spill data. A recent chart is pasted below. ITOPF’s data are nicely presented on their website. No such data are available for international offshore production.

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