Below pic is close up of the schist I have blasted clean & washed out. As you can see in the above pics this bedrock would be under water in a flood & the schist fingers trapping this gold in its cracks & cleverage. The fine gold would have tended to be carried on further down stream in a flood. The gold here was generally of a chunkier, coarse flat nature & not so much fine.

The gold in the pan in the above pic is the result from a couple of hours of doing that crevicing & cleaning out of the schist bedrock in the others pics from a river in Central Otago in the south island of NZ. Generally I just shovel straight in to it & hook the motor/pump up to the spray bars.

This was the first time I used it with the ply board on the front to take my 2' suction nozzle hose set up. Like the little high banker above & below. I am a fan of making as much of my own gear as possible. Always a pleasure to share what little I know & have learnt from others & also by experiance. I made it out of 2' PVC and the water supply at 1 1/4'. Now to the problem my DIY suction nozzle. It appears to be supplying more than enough pressure and flow. I have a 2' Briggs and Stratton 3.5 HP pump which delivers 150 GPM. G'day Hoser John, Yer mate.Kiwi as in NZ (New Zealand) Great site here. My idea is to set it next to a small creek and suck out from underneath the big boulders.

2 suction nozzle for gold dredge