As Kevin said, two "open" areas around Colfax (Bear and the Auburn Rec. Area on NF American), also SF Yuba River Rec. Area about ten miles NE of Grass Valley. Further up hwy49 is Indian Valley campground (very convenient place to pan) about 15 miles dowstream from Downieville(NF Yuba). Yes, a smaller
mesh will get gold faster(less material to work), pry bar is good, if you make to the Yuba watershed, I suggest you try a little mossing on the shady side(usually
south side) the higher, drier, brown colored moss is best. Its suprising how much flood, fine gold gets trapped there. I like that you have tried to research
claims, but its just too complex an issue for a guy just starting out. After ten years of experience, when prospecting new areas, I always took Joyce along
as a "shill" to break the ice with claimowners - woman had the "gift of gab" - know what I mean? Good luck and you can never take enough pics!