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Suction Dredge Permits - California Department of Fish and ...

The use of vacuum or suction dredge equipment, otherwise known as suction dredging, is currently prohibited and unlawful throughout California. Under new state law effective January 1, 2016, the use of vacuum or suction dredge equipment is defined to mean the use of a mechanized or motorized system for removing or assisting in the removal of ...

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Suction Gold Dredge Operation & Components

A suction gold dredge is basically an underwater vacuum cleaner. Material is transported from underwater to the surface and run through a sluice box to capture the gold. A sluice box works because gold is 15 times heavier than sand and gravel and so is easily trapped by the riffles and carpet in the sluice …

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Sluice Boxes: Online

Since 1955, has been providing the very best in mining and prospecting equipment. Whatever you need, we're here to help!

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Dahlke Dredge MFG - Gold Dredges

Here at Dahlke Dredge we offer state of the art gold mining equipment at competitive prices. Whether you are planning an epic gold dredge outing, looking for a custom sluice box, venturi eductor, pump or air compressor, we are here to help you! We manufacture all of our gold dredges in house, in the USA.

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Dredge Questions - Gold Panning, Sluicing, Dredging ...

Nov 09, 2018· Just one other little tid bit, the 4" mini is a great little portable dredge, however since it does have a smaller sluice box and flare, I would get it with a suction nozzle and have the lower half the sluice box replaced with #3 expanded metal for better gold recovery.. again.. just my 2 cents.

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DredgeNZ shop - Gold Panning & Gold Dredge Supplies

DredgeNZ online shop sources and supplies mining products and accessories from overseas manufacturers. Buy online - Gold Panning & Gold Dredge Supplies. Gold Dredge Specialists in New Zealand – Gold Panning, Detecting and Mining Equipment for Beginners and Professionals.

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Gold Dredges at Kellyco | Gold Prospecting Equipment

Gold Dredges & Dredge Parts ... Oversized Power Jet with 2" Jet Log from Keene – engineered for durability with its contemporary non-clogging/jamming design . SKU: PJ32O . Add to Cart ... Keene Backpack Dredge with Power Sluice Conversion and Suction Nozzle

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Plan and design your own home made suction dredge for gold ...

Sep 1, 2013 - Plan and design your own home made suction dredge for gold mining Stay safe and healthy. Please practice hand-washing and social distancing, and …

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Dredge Nozzles & Power Jets | Pro Music

Pro Music is proud to offer Hydro Force, Jobe, Keene, and Proline gold dredge nozzles and power jets including dry land suction nozzles with free shipping! Music Gear And Mining Equipment • 300 Front St Fairbanks, AK 99701 • (800) 478-1994 • Free Shipping!!

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Master the Art of Suction Dredging ... - RareGoldNuggets.com

Mar 26, 2016· When set up properly, a suction dredge will capture a good amount of the fine gold while still allowing for good amounts of material to be processed. The benefit of a good dredging operation is that there is a continuous supply of gold-bearing material to being supplied to the sluice.

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Proline Gold Mining and Prospecting Equipment/Gold Dredges

2.5" Dredge. This machine was a trend setter when it first came on the market and it continues to be one of our best sellers many years later. When other 2.5" dredges were floating on inner-tubes, required a suction nozzle for producing dredge vacuum, and had limited depth capabilities, the Proline 2.5" dredge sat on sturdy pontoons and used a power jet for dredge vacuum.

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Suction nozzle and power jet design? - GOLD PROSPECTING ...

Apr 16, 2014· I have the basic design figured out, can anyone give me the ratio of the size of thewater inlet line to the suction line size? Also pressure/gpm needed to be effective?Ive got a 40 drop and going from 3 to 1 1/2 line size to run my Simple Simon.Im hoping to run a 2 suction nozzle/power jet. :hmmm...

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Why Are Dredge Sluices So Short? - Sluicing, Highbanking ...

Apr 12, 2013· When we crank up the 3" pump our waterflow seems to fast for a single Keene A52 sluice, but have to keep the pump pumping to obtain the suction we need. We were thinking about a long slick plate running to twin Keene A52's side by side or end to end, or even drop stacked.

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Martin Prospecting

Martin Prospecting 2-1/2-inch Suction Nozzle for Gold Dredge Sluice Box / Hi Banker. Powder coated green for added durability. Total length: 20-1/2-inch; Inlet: 1 1/4-inch. Made of aluminized steel. $110.00 Martin Prospecting Dredge Suction Nozzle Item #: 1005 Your choice of 2-inch, 2-1/2-inch or 3-inch. ...

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Keene's 2.5" Highbanker and Dredge Combo – Sunny Mountain ...

If you want to move dirt, then look no further than Keene's 2.5" highbanker and suction dredge combo. This unit is based off the A52 sluice box with hopper and leg kit. It's powered by the lightweight Honda GX50 and P90 pump. This unit is capable of processing yards of …

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2" Suction Nozzle for Gold Dredge Highbanker Sluice for ...

Find many great new & used options and get the best deals for 2" Suction Nozzle for Gold Dredge Highbanker Sluice at the best online prices at eBay! Free shipping for many products!

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Suction Gold Dredge Basics - Steve's Guides ...

Jun 13, 2018· A suction gold dredge is basically an underwater vacuum cleaner. Material is transported from underwater to the surface and run through a sluice box to capture the gold. A sluice box works because gold is 15 times heavier than sand and gravel and so is easily trapped by the riffles and carpet in the sluice …

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What is a suction dredge? - YouTube

Feb 25, 2017· AMRA presented this video to the California Water Board on SB637, a scheme to further regulate suction dredges. Suction dredges create fish habitat, clean the environment from mercury and lead ...

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Plan and design your own home made suction dredge for gold ...

Home Made Suction Dredge. ... A power jet puts the high-pressure water in just before the sluice box. A suction nozzle is best in very shallow water; a power jet produces better overall suction. ... gold dredge plans, gold dredge design, build your own gold dredge, consider buying a used gold dredge, suction dredge, dredge equipment, small gold ...

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MODULAR APPROACH IN CUTTER SUCTION DREDGE …

in the design of a smaller dredge based on both the IHC standard Beaver cutter suction dredges and the above mentioned custom built cutter suction dredge. Till the end of 2006, this led to contracts for in total twelve (12) cutter suction dredges derived from this design to be constructed in co-operation with local yards in China.

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43 Best Sluice Box images | Gold prospecting, Gold sluice ...

Jun 8, 2017 - Explore dawnpetifer's board "Sluice Box" on Pinterest. See more ideas about Gold prospecting, Gold sluice, Gold mining.

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Proline Mining Equipment Dredge/Highbanker Combo 2"

2" Dredge/Highbanker Combo. Beginners love our 2" machines because they are small, lightweight and very affordable. The Proline 2" combo offers the versatility of being operated as either a 2" dredge or a small highbanker which can be fed continuously with a small shovel.

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Gould Engineering Bazooka Dredge

The suction dredge required only a centrifugal pump and gas motor, a float pontoon system, a sluice box, a venturi jet generator, a dredge hose, and a nozzle. This discussion involves the venturi jet generator that provides the suction for the dredge to operate. The Venturi principle is the key to making the suction generator work and the ...

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The Gold Dredge - , Inc.

The Surface Dredge: As the heading ofthis section implies, surface dredge floats on the surface of the water. The material is pumped to the surface through a suction hose into an efficient sluice box that is capable of recovering extremely fine particles of fine gold.

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Suction Dredges – Pro-Mack Mining Supplies

4-inch – GX200 Honda Jet Flare Dredge Call for Price Read more; 5-inch, 10 HP Deisel Dredge With 3 Stage Sluice Call for Price Read more; 5-inch, 10 HP Diesel Dredge with 3 Stage Sluice Call for Price Read more; 5-inch, 13 HP Honda Dredge With 3 Stage Sluice Call for Price Read more; 5-inch, Dual 6.5 HP Honda Dredge With 3 Stage Sluice Call ...

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A Gold Fever Experience - Gravity Dredge Plans - Olympic ...

The gravity powered dredge works on the same principle as a syphon, that is, that the weight of water in the pipe down hill (at a height below the suction end) creates a negative pressure in the pipe that pulls the water and the gold bearing sand a gravel through the nozzle, down the tube, and delivers it to the sluice.

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Keene 3 Stage Sluice Box - 4" High Performance

3 stage sluice FAQ Info on 's newest dredge 3 stage sluice box design. Keene dredges are available by special order. FOR CURRENT PRICING AND AVAILABILITY ON KEENE DREDGES AND DRY-WASHERS PLEASE CONTACT US AT: 1-760-948-3333 ..

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» Double-screen Classification System in Dredging

Conventional Suction Dredges do not allow for Much Classification. I am not sure what the exact formula is, but I know from long experience that every inch you lift the feed of a suction dredge above the surface of the water, you lose a considerable amount of suction-power at the dredge nozzle. Therefore, since we have to accomplish both ...

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