David Simms wrote:
David, It's in the same category as lead, mercury and cadmium, but so are copper and zinc. Almost everything is toxic at some exposure time and dose. In the environmental movement in the 70s it was thought of as similar to mercury if not worse. There is almost no data to support or refute this, possibly because it's a less abundant industrial pollutant because it's expensive. On the other hand huge numbers of Aerospace processes are being revised to eliminate Cadmium, which is being replaced largely by At very low concentrations silver is safe and is used as a biocide. This has been known for hundreds of years. There is about 1ppm in Astronauts' drinking water. Some quacks on the Internet have been pushing it as a cure all at much higher doses, and there's plenty of data that this has nasty side effects, including turning blue. For myself I like to avoid becoming data if I can. I should maybe just do silver recovery and not worry about it, but that doesn't get it all, and the groundwater here as it is is quite clean. It's been rural forever and we're a thousand feet above sea level, and I'd hate to knowingly ruin that and poison myself in the process. Referring to your wash technique, do you circulate each batch of fresh water through a washer, or let it stand between changes of water? --
Charlie Falke _____ /\
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"One test result is worth | |/ `o
one thousand expert opinions" - Wernher Von Braun 0 N4003M
"Imagination is more important than knowledge" - Albert Einstein
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