CAIB Final Report question re. vol 5

I'm trying to close out my STS-107/Columbia archive to CDs and I ran
into a couple of problems with getting the whole CAIB report. The CAIB
website which was supposed to be taken down on 2/1/2004 is still up, and
http://www.caib.us/news/report/volume5/default.html lets me download the
CAIB Report Volume 5, Book 1, Part 4. The part04.pdf file is
116,917,489 bytes long, consists of 212 pages and is titled: "Volume V,
Appendix G.4, Group 1 Matrix Brief on Maintenance, Material and
Management". So far so good.

The report is also available from the NASA history website at
http://history.nasa.gov/columbia/CAIB_reportindex.html

Vol 5, Book 1, Part 4 from that page downloads as part04.pdf and is
22,093,824 bytes. The size difference is significant, but more
importantly this 22 MB file fails to open in Acrobat 6. Acrobat says
the file is damaged, attempts to repair it, and then gives up saying the
file could not be repaired.

From the same NASA history page, Volume 2, Part 00a says on page 5 that
Volume 5, Appendix G.4 is titled "Aero/Aerothermal/Thermal/Structures
Team Final Report, Aug 6, 2003".

Does "Aero/Aerothermal/Thermal/Structures Team Final Report, Aug 6,
2003" equal "Group 1 Matrix Brief on Maintenance, Material and
Management"? Is this a simple mistake or is the _real_ part4 of Volume
5 missing?

--
bp
Proud Member of the Human O-Ring Society Since 2003