On Fri, 08 Aug 2003 09:34:03 PDT, Aron Nimzovitch <[EMAIL PROTECTED]> said:
> Hehe, that is probably the same mechanical system that Feynman broke > over 50 years ago. Looks the same as what I once used and it is still > mechanical. Takes a couple of hours without any clues to the initial > number. Nope. The dial is only an input device, all it does is (a) provide initial power-up via a few spins to drive a generator, and (b) then the lockset just counts ticks left and right, it's actually microprocessor controlled. In any case, GSA specs for Class 5 require: 30 man-minutes against covert entry 10 man-minutes against forced entry 20 man-hours against surrepetitious entry (surrepetitious is what Feynman was doing - opening it without leaving noticable traces. Covert basically means with a minimum of tools and noise, and forced means blowtorches drills and all the rest). The general idea is that security is in layers - you presumably also have an armed Marine on patrol with orders "If you hear a noise, shoot (forced entry), and check every half hour and shoot any unauthorized activity (other 2 categories)", or other schemes to make sure you don't get the requisite amount of time alone with the container.
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