In view of the suggestion yesterday in a paper by Giorgio Bracaglia that The Raes samples that Rogers used had been switched it seems like a good time to examine the St. Louis presentation by Thibault Heimburger, The origin of Rogers’ Raes and C14 samples along with his PowerPoint Presentation.

Here is a chart that addresses that very point:

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Here is the concluding PP chart from Thibault’s talk:

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*The paper at HSG has been locked up with a password. Apparently and unfortunately, it was not supposed to have been released.