On Sat, 16 Feb 2013 01:07:32 GMT, Windmill wrote:

But also do frequent widespread checks for the presence of a wide range
of noxious substances. Iodine 131 from Chernobyl (or Japan?), ...

Iodine 131 has a half life of about 8 days. There will be bugger all
Iodine 131 from Fukishima still about let alone Chernobyl.

... growth hormones, antibiotics fed to cattle, etc.

Those and pesticide residues or break down products of any of them, are
far, far greater risk.

--
Cheers
Dave.