Modern explosives are reasonably safe without a detonator. Most bridges in Europe had/have those shafts. The Swiss removed the explosive charges from some brid

Modern explosives are reasonably safe without a detonator. Most bridges in Europe had/have those shafts. The Swiss removed the explosive charges from some bridges in 2014 [1]. It's perfectly possible that the TSMC "explosives in walls" thing is an urban legend, but I don't think it'd be impractical. [1] https://www.thelocal.ch/20150113/tons-of-tnt-finally-removed-from-swiss-sites https://www.thelocal.ch/20150113/tons-of-tnt-finally-removed...