New File Added: Plan to build a Prospecting DRY WASHER
Downloads: A new file has been added by Herne:
Plan to build a Prospecting DRY WASHER
This is a plan for building your own Gold mining 'rocker box'. This version is engine=driven, but you can also power it by hand if you're a purist or don't have a small petrol/diesel engine to hand. TRy it out arounf old gold mine 'tailings'; there still might be some 'color' around!
The drywasher is nothing more than a motorized
sifter which jiggles vigorously to separate
the gold from the sand and gravel you shovel
into it. In actual operation, the earth being tested
is shoveled onto a slanting screen-covered tray
called a trommel, where it sifts through onto a
canvas chute and flows into a hopper.
When the hopper and chute are full right up
to the trommel, the engine is started and the gate
in the hopper is opened about 3/4 in. The material
in the hopper flows onto an inclined tray which is
fitted with cross cleats called riffles. Rapid air
pulsations, produced by a bellows mounted below
the tray and operated by a crankshaft,
bounce the screenings 2 to 3 in. above the cloth
bottom of the tray. This jiggling action causes the
heavier part of the material (the gold) to settle
to the bottom of the tray and collect behind the
beveled riffles, while the lighter portion flows
over the cleats and off onto the ground as waste.
Thank you for posting the plans. Everyone should give gold prospecting at try,more gold prospectors are always welcomed and you will meet some very good people as a bonus. I've been a gold prospector most of my life and many times it has put a big smile on my face. Finding and recovering gold takes a lot of hard work,knowledge and the will to stick with it during your learning stage.
Try to find a sucessfull prospector to teach you the methods of prospecting in your intended area of search. Most prospectors are happy to help and may even show you some finds that will give you the gold fever. Learning from those who have already made the mistakes and wasted their energy get you off to a better start.