Homebrew PCBs

On Mon, 7 Dec 2009 07:54:29 +0100, you wrote:

>They do let copper salts go into the environment at times. Someone
>found copper chloride firebox cleaning sticks, and copper sulphate was
>(is?) used as pesticide. Fireworks also use metal salts for color. I
>think copper sulphate is even naturally occuring as a mineral.
>
Go to your local hardware and look for sewer root killer. I've got
a bottle down in the basement.
Keith Bowers WB4LSJ- Thomasville, NC