Downloaded document (Thanks Chappy) and searched for CESL (Teck Lab or for those oldtimers (Cominco Engineering Services Ltd))
Interesting that the Richmond plants proprietary leaching technology yielded a 96 to 98% recovery along with higher Au (89 to 92%),Ag (81 to 88%) recoveries with a retention time of 50% to 75% of typical time. Wasn't that one of the recommendations...guess Teck will take care of that themselves
Polysius did some work, RE High Pressure Grinding mills which is the new rage in processing more economically
AMEC original 2011 RE closely matched TTWEI for confirmation/verification (Page 1-4,1-5)
Flowsheet is almost exactly the same as New Afton (Kamloops)