I know that this is a bit of an old hat, but for those who missed the NMeM's Niépce in England' Conference back in Oct 2010, the Royal Society now has both a video and audio podcast of Philippa Wright's talk where she announcd and shared with the photographic, conservation and scientific communities the ground breaking findings which had been discovered during the collaborative research partnership between the National Media Museum and the Getty Conservation Institute.
The audio podcast can be found here, and the video one here.
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I understand the conference proceedings are in the process of being prepared for publication. Watch this space for more news of this.