The advice they recycled is now aimed at surviving a slightly less "End Of The World" scenario. All the advice is essentially the same, but it makes no mention of nukes, merely euphemistic "emergencies." As a group the authorities were and still are aware that this crap is merely a placebo, akin to giving people oxygen on a crashing plane. It's makework, designed to stop panic and running around. Our government has never made suitable arrangements for the general populace to survive any nuclear exchange, however limited. The last time we got any help with bombing was during the blitz, and even then everyone ended up in the subways, which are NOT nuclear hardened, its worth noting.
Threads itself makes several pertinent comments about this.. the fact that there is a hierarchy of emergency services for every major city and town, and that the members of that hierarchy are usually IN said city, and thus DEAD, because they have no more efficient shelter than the proles. All of the major plant and manpower needed for a significant emergency was (and still is) located IN the cities and are thus DEAD as well.
Having said that, a limited nuclear exchange IS survivable, so long as you dont live too close to a major target. Sadly, I do, so when the sirens sound, I'll call last orders at the bar, and then get shockingly drunk as fast as I humanely can.
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"There is a time when the operation of the machine becomes so odious, makes you so sick at heart,
that you can't take part" [Mario Savo, 1964]