Posted by Jock on October 23, 2007 at 16:37:53 from 87.105.81.146 user Jock.
In Reply to: Re: Prospecting - Here's to Copper! posted by Peter H on October 23, 2007 at 15:37:50:
...traces of a copper compound in the effluent will prevent tree root invasion? How?
Copper II ions (such as can be found in a solution of copper sulphate) are a powerful herbicide
which inhibit photosynthesis and plant growth. In high enough concentrations copper is toxic to
animals and humans.