I wonder how many more of these there are lying around:

New York workers have discovered a trove of Cold War-era supplies within the masonry of the Brooklyn Bridge, a cache meant to aid in survival efforts in the event of nuclear attack.

City Department of Transportation employees were conducting maintenance on the structure Wednesday when they found the cache on the top floor of a three-floor space inside the bridge's base, agency spokeswoman Kay Sarlin said.

Typical of the Big Apple, the "shelter" was actually a well-ventilated storage area, not the typical sealed area you'd normally expect. Hey, woulda been expensive to do it any other way!