Western States Atomic Vault Company was formed in 1954 and built a secure "atomic bomb proof" storage area in a former curved railroad tunnel near Glenwood, California. Ownership has changed a few times; I believe the facility is now owned by Iron Mountain, a document storage (and document destruction) company.

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The same company (which was originally Iron Mountain Atomic Storage Corporation) owns a storage facility in an old iron mine near Linlithgo, New York). Aside from its unusual location, the door has a bit of history. According to the company, a "28-ton, triple-time lock vault door seals off the entrance to the records facility. Knaust [the founder] paid $1 to obtain the door from a bankrupted Ohio bank, but paid more than $20,000 to have it shipped.”

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