Prospecting Angus Mackirk Predator 3

I ran a test of the Angus Mackirk Predator 3 cleanup sluice by running 4 gallons of material that was classified down to 8 mesh (1/8 inch). I got 20-30 colors. I then took the tailings and classified them down with 20, 30, 50 and 100 mesh screens. I ran the +30 material through the Predator 3 again and the -30 ran through the Blue Bowl. I found the Predator 3 on the first run got all but 3 colors which were smaller than 30 mesh. The Predator 3 does a very good job as a cleanup sluice.