Thibault writes in a comment to 50/50 : Colin Berry’s Most Outlandish Proposal. Comments follow by anoxie, Charles Freeman and Colin Berry. Join in there or here. This was just too important a comment to not be at the posting level:
. . . Actually, all of Rogers’ discoveries (the strongly anomalous cotton content, the dye and, last but not least, the vanillin tests) were performed on several threads coming from the Raes sample adjacent to the C14 samples. Those Raes threads were given to STURP (in fact Rogers) on the order of Card. Ballestrero himself. No secret here.
Since the Raes sample and the C14 samples necessarily shared at least some threads, Rogers thought that the entire Raes/C14 corner was not representative of the bulk of the TS. However, as a true scientist, he wanted to verify specifically this point.
Later, he could obtain 2 tiny pieces of threads coming from the center of the C14 dated sample. He could confirm the presence of dye as well as the very high amount of cotton in these 2 threads. To my knowledge, for some reasons (lack of time or smallness of the samples or..) he did not perform the test for the vanillin on these C14 pieces of thread.
Shortly, Rogers’s discoveries re the anomalous characteristics of the Raes/C14 corner came from the detailed study of an arguably representative genuine sample (Raes piece 1). He confirmed them on 2 small pieces from the center of the C14 sample. Those pieces were truly from the center of the C14 sample and there is a clear “chain of custody”, although unpublished for understandable reasons.
One can discuss endless each of his observations but taking them together they point to the only scientifically acceptable contestation of the C14 results.
I agree that it’s difficult to accept knowing the opposite conclusions of the textile experts (F.Testore, G. Vial and M. Flury-Lemberg).
But read carefully what follows:
My friend journalist Brice Perrier, after a detailed investigation wrote a book in 2011: “Qui a peur du Saint Suaire ?” (in French, Ed. Florent Massot, 2011). This is simply the best serious investigation that includes many interviews of most people (pro and cons) involved in the TS.
He wrote (p.126):
“I went to see one who was recommended to me by both archaeologists and Lyon textile museum experts as the best expert in ancient fabrics, Christophe Moulherat.”
Brice told me that, at the time, Moulherat did not know that the C14 samples came from a single location rather than from three different locations as he thought. He was shocked and added (p.242): “for this kind of fabric, I would have at least chosen to test separately warp and weft threads coming from at least two different locations”
Brice: “I asked him if there were actually invisible repairs.
‘No, they can be seen if you have the means to see them. Just do a thorough analysis. But for that, you must have access to the fabric and do not look to the naked eye because there you’ll see nothing (..).You need microscopes.
If one has tampered threads with the desire to hide something, you have to think about that before and you have to be equipped to see that. Otherwise, if the repair is well done you can miss it. You really need a detailed analysis’.
G. Vial and F. Testore are/were beyond any doubt competent textile experts but the conditions of the C14 sampling were far from those necessary to detect a repair.