Report of the PRESIDENTIAL COMMISSION
on the Space Shuttle Challenger Accident
Volume 4 Index
Hearings of the Presidential
Commission on the Space Shuttle Challenger Accident: February 6, 1986
to February 25, 1986
FEBRUARY 14, 1986 SESSION
 [Ref. 2/14-17 21 of 22] Interoffice Memo, Morton Thiokol, Inc.; From: R.
Boisjoly to R.K. Lund. Subject: SRM O-Ring Erosion/Potential Failure
Criticality. Dated: 31 July 1985. - continued.