"Richard Casady" wrote in message
...
On Wed, 20 Aug 2008 23:07:51 -0700, "Calif Bill"
wrote:


"Eisboch" wrote in message
om...

"Calif Bill" wrote in message
m...



And you forgot about the old Silicon Rectifiers.


You probably mean the old Selenium Rectifiers. The ones that stunk like
rotten eggs when they went bad.

Eisboch


Damn senior moments. Should not forget Selenium as it is a major toxin in
the Central Valley of Calif.

Plants pick it up and concentrate it. Problem is, livestock eat the
plants. At least half the elements are toxic, nearly everything
heavier than iron. Silver is toxic. They can only use it for skull
plates, pins in bones etc, because it is insoluble. You are not
allowed to dump spent photo fixer in commercial quantities into the
sewers, because of the silver.

Casady

The coastal hills in Calif have lots of selenium and the irrigation
practices tend to bring lots of salts and the included selenium to the
farms. The use drains in the fields to remove the salts and the
concentration ponds are extremely toxic. They now do not allow anything to
grow around the pond, to keep the birds from nesting there.