No PDAC !?! Probably because it would place them at great risk of ridicule from the Majors who would poke holes in their freeze ring technology for starters, followed by the water-table porosity problems that caused Cominco to pull the plug after 23 years and bank on Red Dog...funny how RB dodges questions on that issue. Then again, when he and PK aren't even in Washington State, who really cares at all...