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Mason -
• aware that primary O-ring was crit 1
• aware of concerns?
• agree with NO-60 recommendation
initially?

Boisjoly(?): does refurbishments on SRB
cases, joints. (Has done presentation)
• asked to quantify concerns
• data not available: data to characterize joint?
• squeeze not an issue - timing
function is an issue
• increased # of cases of erosion after SRM 8.
Why? (change of putty?)

ASK MSFC → •  DID NOT KNOW WHAT CIL WAS (!)

Thompton: AUG 85 memo recommending 
we stop flying until we double 
squeeze on O-ring.

night of launch: had no putty data
below 40°F