TSR2 - materials?
I recall working for someone who had been around at BAC during the TSR2 years. His take - from a production engineering/materials point of view - was that they were pushing the boundaries on the materials side, including proposed use of exotic flavours of aluminium alloys (including an early Al-Li, IIRC?), driven mainly by the need to save weight, which given the problems we were having with Al-Li alloys at the time of the conversation (mid-80s) was a bit sobering. He felt that there were going to be big, and costly, problems to be overcome in getting production aircraft out of the door and into full service. With regards to the destruction of the jigs etc, his point of view was this: if ANY components, tools or jigs were left on the shop floor, the work force would've carried on working on it, regardless of instructions (there was no other immediate work), and so it was necessary not just to remove said items but also to destroy them.
PBW