A couple showed signs of leakage(black gooey stuff leaking out, or bulging outwards under pressure)...
Ah, yeah. Both clear indications of botulism. Mmmm mmm good!
I can never eat expired food, ever, ever, ever. If the milk's expiry date is today, I won't drink it (or let me kid.) I know, I know, I am over the top, but it just takes one little botuli or one little salmonelli to ruin your day/week/life.
And that shit in the artic. I am guessing it was... frozen? Perhaps that had something to do with the longevity of said beans more than the canning process... just a thought.