Yeah ill have to leave this one up to him because the only time we ever had heavy metal problems is when one of the counter weights flew off inside the crusher and there was lead in the samples as a result..
Them sob's make a heck of a racket when theyre off balance too.. :-)
That whole process is a joke. They show tailings in some of the diagrams and then say they don't generate any tailings. Unless the deposit contains free gold, there is no simple way to recover it without chemicals that disolve gold or concentrating sulfides for direct smelting. Don't you just love how this process can treat anything from gold ore to uranium waste and do it all environmentally safe? Why aren't Newmont and Barick all over them? If it sounds too good to be true......................