Quote Originally Posted by gustavus View Post
Hmm when a laboratory can assay gold in parts per million from a ton of ore not much if any loss there if any at all.



Greenwood B.C. ran a large gold smelter early 1900's, there are huge slag piles everywhere and not a gram of gold to be found in the slag, someone must have been doing something right.

https://maps.google.ca/maps?q=greenw...en&sa=N&tab=wl
Gus come one you and I both know mining and smelting scrap are two completely different animals. I have never seen acids and incineration used in any mines I have ever cut scrap in. I never knew they were mining pcb boards up there.