The Frederick, Maryland campus of the National Cancer Institute used to be the site of biological weapons research in the 1950s and 1960s and until 2003 there w

The Frederick, Maryland campus of the National Cancer Institute used to be the site of biological weapons research in the 1950s and 1960s and until 2003 there was a building that was off limits because it was contaminated with anthrax spores. https://en.wikipedia.org/wiki/Building_470 https://en.wikipedia.org/wiki/Building_470