TIL Grand Central Station in NYC is radioactive due to the natural radioactive elements found in the granite used in its construction. If Grand Central Station were a nuclear power plant, it would be shut down for exceeding the maximum allowable annual dose of radiation for employees.

http://io9.com/grand-central-station-is-radioactive-1689028425



Submitted April 20, 2015 at 02:01AM by DEDson http://www.reddit.com/r/todayilearned/comments/335rmv/til_grand_central_station_in_nyc_is_radioactive/