Yeah, the AT case is a brute. Could probably take an attack from a sledgehammer with just a few scuffs and scratches, MS-DOS still running fine on the inside, hehe.
Who will invest in some birdshots (or buckshots) and see how much an IBM AT case can take? As I've posted before, similar experiements have been done with XTerms and Sun 3-series. I'm sure IBM would approve it, just to brag about how much better their solutions are compared to Sun.