Jane - I'm sure that the suspicions reported are well-founded, but
radioactive releases can sometimes be due to plain ignorant stupidity - as
in London some years ago, when a radio-source used in some sort of checking
on a demolition site was taken away by the scrap merchant commissioned to
clear the site of waste metal. The source was kept in a lead castle in a
pit railed off and marked with the standard danger signs. The lead castle
was recovered from the scrap-yard only minutes before a worker there was
about to break it open. The man clearing the site claimed, apparently in
all honesty, that he had no idea what the radioactive danger sign meant and
that he'd been told he could take all the metal left there. Tony
N-S.
