These cylinders, over which there was a rubber belt, rolled and shook the 300 Stamp Mill’s crushed rock in a constant flow of water, causing the waste rock to go over the top and the gold-bearing rock to remain at the bottom – a very efficient system. A total of 120 Frue Vanners, arranged in four rows of 30, were housed in a 340 foot by 85 foot single story wooden structure just below the 300 stamp mill building.
