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Leaked Shell Sigma3 document may hold clue to cause of Gannet oil spill

By John Donovan

We are in possession of a 30 page plus Sigma3 document prepared for Shell U.K. Exploration and Production in relation to Gannet. It may hold a clue to the cause of the recent Shell Gannet oil spill into the North Sea, the largest for a decade.

Sigma3 is a consortium comprising Amec, Petroleum Services Network and Wood Group, which maintains Shell’s North Sea platforms.

According to Shell:

“Sigma 3 team is based inside the Shell organisation gives us a seamless alignment and insight into the real problems being addressed daily in keeping the assets running safely and efficiently.” read more and its sister websites,,,,, and are all owned by John Donovan. There is also a Wikipedia article.
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