Have had this conversation with lost and Boardsort. For reference:
viewtopic.php?f=3&t=19554&p=35735&hilit=Blanks#p35735viewtopic.php?f=4&t=19617&p=35966&hilit=Blanks#p35966Basically blanks will all be low grade unless Chris sees something to know he can get something out of them. Or if you can find someone else set up to recover the material that's there, there is potential the boards are worth more than low grade. Also, gold is much higher than it was for those conversations so possibly worth the effort currently.