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Keene 3" Suction Gold Dredge

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Keene 3" gold dredges are a great place to start for those thinking of their first gold dredge. These units are relatively affordable and easily transported but large enough to move enough gravel to have some impact. Where a 2" gold dredge can be expected to move about 1/2 yard per hour* of gravel and a 2.5" dredge up to a yard an hour*, a 3" dredge can be expected to process up to 1.5 - 2 yards of gold bearing gravel per hour*. Portability is always important but once you are into the gold it is the volume of gold bearing gravel processed that decides whether an operation is profitable or not. Keene 3" dredges feature their oversize powerjet with quick coupling system. This dramatically reduces clogging and in the rare event of a clog, allows for quick and easy access to the hose.
Keene 3" Suction Gold Dredge
Keene 3" Suction Gold Dredge
This 3" dredge is equipped with all the latest innovations in dredge design similar to the larger dredges. This is an extremely versatile dredge that can be used as a standard floating dredge with an optional air compressor for deeper dredging.

Our 3" dredges all now come standard with 20 feet of suction hose so you can reach farther and move the dredge less often.


Features for the 3" Dredges
bulletThe flotation is extremely light and compact and can be assembled or dismantled in a matter of a minutes. The floats have built in storage indentures providing a place for your tools, mask, rock pick etc. The floats have stringers, or "runner bottoms" for fast water and rock laden bottoms.
bulletThe dredge is equipped with Keene's powerful new PHP160 160 gpm pump with oversized pressure hose. This motor and pump combination is ideal for the 3" dredge offering the best combination of power and portability.
bulletThe 14" X 40" sluice box has rolled top edges, tapered sluice design, longer classifier screen and improved riffle design for superior recovery. Equipped with ribbed black rubber matting, for quick identification of values, under a longer classifier screen. This 3 inch sluice box surpasses all previous designs for both fine gold recovery and ease of use.
bulletThe Marlex Jet flare is built with a longer straight section and flare making it possible to use a shorter power jet to reduce weight. The jet flare design also improves fine gold recovery and increases suction power. The jet flare also makes the dredge easier to set up in shallow water conditions. The sluice box can also be set independently on a flat area next to the water.
Part Number Engine Type Compressor Weight
KE3400PH 3.5 hp Honda GX120 None 159 lbs.
KE3405PH 3.5 hp Honda GX120 T80 169 lbs.
Keene Oversize Powerjet with Quick Coupler System
Keene Oversize Power Jet with Quick Coupler System
We have taken the standard Power Jet and created a more efficient, easy to use and overall superior jet! The new design involves a slight enlargement of the jet tube, making it a bit larger than the interior of the suction hose. The result of this modification is a smooth, seamless flow from hose to jet. Rock jams and other obstructions are virtually eliminating downtime. The quick coupling features two side mounted snap levers for quick and easy joining.
*Yards per hour are estimates only and can vary depending on the size and shape of the rocks and gravel and how hard the material is packed. Operator expertise has a large impact on the amount of gravel a dredge can process due to more experienced operators being more efficient and less prone to clogging the dredge.
AMDS has Keene suction dredges for gold and other valuable minerals. The suction dredge is the best method for the small miner to recover gold from underwater deposits. Gold dredging is a relatively inexpensive method of mining for small one or two man mining operations, and can provide reasonable returns for the hard-working miner. Keene Engineering is the oldest and largest manufacturer of portable suction gold dredging equipment. Note: the State of Alaska requires a permit for all suction dredges operating in the State of Alaska. See our Suction Dredging Regulations page for details.
Alaska Mining & Diving Supply is a dealer for Keene gold dredges. Contact Us! for more information on how to purchase your new Keene gold dredge.


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