The "Earthquake" will classify a 5 gal. bucket of dry or wet material in 3 to 5 minutes, and no stooping, bending or bucket shakin'! ... Mobile Placer Plants. ProGold Prospecting Equipment Supplies. Box 9303. Surprise, AZ 85374. ph: . ... It will extract clean gold from 12 to under 50 microns with no chemicals, Mercury or ...