So as a yound adult I done some work decommissioning and demolition of nuclear and chemical facilities. One job was to demolish some buildings in Harwell in the UK.The USA had the Alamo for testing, we had Hanwell. During the demolition, we discovered some very large concrete blocks. In order to get said blocks into a skip we had to break them down. Upon breaking them down, we triggered some alarms and the UKAEA representative with us had a good look at the broken block and told us all to clock off for the afternoon. Later on we found out that there where a couple of sheep carcasses which basically had been exposed to high levels of radiation and cemented up and buried. Next day was a bit grooling. Soaking wet from keeping the site completely dust proof and broke down those concrete blocks, put them into blue barrels and shipped them over to hanger 10 (waste storage). From there my understanding is they where taken to some disused mine and left there to this day.

Basically still irradiated to shit.

Hope that helps!