The CAIB Report says he's wrong...
> If he was wrong (and that's still a matter for debate), then he was by no means the only one.
What's debatable?
From the CAIB report, Volume 1, Chapter 3, pg. 51:
"BX-250, a polyurethane foam applied with CFC-11 chlorofluorocarbon, was used on domes, ramps, and areas where the foam is applied by hand. The foam types changed on External Tanks built after External Tank 93, which was used on STS-107, but these changes are beyond the scope of this section."
Did NASA (or anyone else) rebut this?
ref:
http://caib.nasa.gov/news/report/pdf/vol1/chapters/chapter3.pdf
CAIB Report Volume 1:
http://caib.nasa.gov/news/report/volume1/chapters.html
Doug.