Cleaning Up Chernobyl

After the accident there was an extensive cleanup project. This involved helicopters dumping tons and tons of concrete on top of the melting-down reactor. After a while this formed a concrete sarcophagus over the reactor. This has kept most of the radiation in but some is starting to leak out, and the sarcophagus is being damaged from exposure to the elements. All of the vehicles used during the cleanup became irradiated and there is now a “vehicle graveyard” containing irradiated helicopters, tanks, and trucks used during the cleanup. There is even a you-tube video of a helicopter falling apart in mid air while pouring concrete on the reactor. It isn't known whether the malfunctioning helicopter had anything to do with the radiation or not.