Today, a majority of the items stored are in the form of paper documents or tapes. In the '70s and '80s, however, the space hosted more interesting valuables, including musical instruments, antiques, and celebrity memorabilia. An art collector even stored many of her paintings here. At the same time, executives from some major companies — Exxon and Shell, for example — built sometimes elaborate fallout shelters in the mine, where they would stay in the event a nuclear war broke out.
"Get Yamamoto. The wreck of the Mitsubishi Model 11 bomber which was shot down over Bougainville in April, killing Imperial Japanese Navy Admiral Isoroku Yamamoto. The US knew of his itinerary and specifically targeted him for assassination.