No, Bragalia is making his own (faulty) interpretation of letters and memos. I am too lazy to really do my own research right now, but I will see if I can find some of the central letters and memos that Bragalia is using. In the meantime I will allow myself to quote one of the comments on the The UFO Iconoclast(s) website linked to at the Front Page news here at UM (comment by CDA):
My conclusion is that Battelle had no such data in their hands, and never had.
[Stan Friedman's response would be that Cross did not mention Roswell in his memo as the
latter was only 'secret' and therefore could not contain any reference to top secret matters!]
Titanium research by Battelle? Naturally. But again, there is no established connection with Roswell, whether ET or otherwise.
Still, let us await further revelations.
Emphasis mine. Thus according to the commenter here the very central letter to Bragalia's case specifically states that no physical data actually existed. In other words, they could obviously not have any ET material on their hands as that would constitute "reliable physical data". Thus Dr. Cross could never have verified that as according to the letter he had nothing to work with.
We are back to nothing and hot air. So I gather you have no reference to any solid data, but only hearsay and unsubstantiated claims?