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“McDonald testified that Thiacal was pressured by NASA to…” — Up First from NPR at 21:11

Up First from NPR Challenger at 40: Lessons from a tragedy

“McDonald testified that Thiacal was pressured by NASA to approve the launch. Bojole told the commission he'd been part of a special task force at Thiacal that was focused on the O-ring problem for a long time in advance of Challenger.”

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