Well, we are Area 52 afterall
There are a lot of odd things there. One of the buildings that a company I contracted inhabits, you're not allowed on the lower floors because they're supposedly contaminated.
There is a building at Fort Detrick, MD that has had all of the windows and doors bricked up and is "off limits" for 100 years since 1960's. Also, a bunker underground at Point Loma, CA (San Diego bay), that dates back to WW2 and is permanently sealed with reinforced concrete including the air vents to the surface due to contamination from nerve gas leaks in the 1950's.
Nerve gas...friend who regularly goes to Dugway Proving Grounds says that there's so much chemical nerve agent in the soil that you need to be really careful about dust.
In some cases, I wouldn't be surprised; others, it's easier to nod and smile. There are some neat things though, most certainly.
I think these really are, there was a lot of post WWII nuclear work done there. It's hard to tell what they were handling in those shielded rooms.
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