Putting it in writing and having bcsc approval are all that matters...and bloom I am not sure,and I bet dkolish is also not sure...of exactly the percentages involved..but it's common sense..why an open pit design if vein chasing...remember when you got mad at me for keyboard jokes?...that's when I put it together..111111111111111111 111111111111111111 111111111111111111 111111111111111111...me and my buddies in Toronto have been pumped for weeks!!!!!!!.....dkolish in the contest what are the classifications..indicated..inferred..anything else??????