Deal with some clay and crumbling shale, thats where I find the good stuff. But your right a good day I usually spend about 4 to 5 hours and I'm lucky to run 15 gal of material. Digging ,classifying, runnin it thru the sluice and panning it out right there. Gotta change things up. As long as I'm on the spot, I need to run material and pan at home. It's just sometimes ya gotta see that yeller stuff, Like a drugy gettin his fix.