Report of the PRESIDENTIAL COMMISSION on the Space Shuttle Challenger Accident

This memorandum, also written by Leon Ray and signed by John Q. Miller, strongly questions the clevis joint design. It is the earliest known official document which questions the redundancy of the seal.

This memorandum, also written by Leon Ray and signed by John Q. Miller, strongly questions the clevis joint design. It is the earliest known official document which questions the redundancy of the seal.

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