I have some friends with a couple pretty good claims in Nevada about 45 miles from the nearest main road, trouble is the gold on the claims is 100-400 mesh, is there any way to recover this gold on site with a small production operation? Is there a drywasher that will recover to this mesh? Or can one be modified to recover this fine gold? Or how about the gold cube with a recirculator? There is a creek running thru part of the claims but not a lot of water in it and not real close to the rich paydirt areas. The gold is so fine they have been screening to 100 mesh to start with then bucketing the dirt home to work with it. Any suggestions? Thanks.