Quote Originally Posted by Ross Chambers View Post
"Overexposure - Health Hazards in Photography" Susan D Shaw & Monona Rossol Allworth Press New York ISBN 0-9607118-6-4

They don't cover back pains from hulking heavy cameras about, but for all chemistry issues they are thorough.
You can't trust this source either. The edition I looked in was way off on the properties and therefore the hazards of ferricyanide - it had way over stated the hazard.

By the way, do you all know that sodium is considered a heavy metal? And oral exposure of too much sodium will kill you too.