Sarge, the project at Cangalli should certianly qualify as "in the last decade."
Ronald Atwood, Ph.D., Report of the Investigation on Cangalli, Bolivia Gold Deposit-Recovery of Fine Gold with a Mine Plan and Economic Projections, August 1999.
"the gold recoveries in the Chaco area can be expected to be in excess 95%, operating costs at the Cangalli site will range from $31 to $123 per ounce of gold produced."