Over here in Scotland, there has been at least a couple of real scary occurances, The first one to spring to mind was in the late 1960 period, when a firm who manufactured instrumentation equipment with luminous dials closed down, Then began a horror story, from the little snippets i have heard, this particular works was buldozed, and all the debris put in a deep landfill, The site where the factory was situated, was dug down & at least two feet of whinstone was compacted in place,
I do not know if it is true but according to a rumour, the site is still monitored 50 years later
I wonder should this be true what was the fate of the workforce?
The second situation which is still ongoing, was an ex Naval aircraft servicing depot 1939-45 war establishment was closed in the late 1940/s, & the aircraft & spare stuff was trashed, Old instrument dials cockpit display stuff etc, taken down to the sea, & dumped slightly out in the bay, Now in these more enlightened days they have found the beach is full of hot spots,of radiation,in this particular bay Now it is cordoned off & a massive clean up looks to be underway
Sometimes i wonder if Homer Simpson is alive &well with his bright green radioactive billet!