Proline dredge-highbanker combos have become the standard against which all other dual-purpose machines are measured. We feel the reason for this is simple.

All four sizes of our combos were designed with one goal in mind: build a machine that can actually do both of its intended jobs well, yet remain lightweight and simple in design.

Take a close look at comparable machines on the market today, and you're likely to find a highbanker which over the years was retrofit with a “kit” to make it possible to dredge with. This system unfortunately doesn’t address the many trade-offs encountered when trying to perform two functions with one unit.

Every Proline combo was designed from the ground up to be both a dredge and a highbanker. As a result, it performs and looks totally different from anything else on the market.

All Proline combos use a power jet for developing the vacuum used when dredging, rather than the suction nozzle which is inherently less efficient and more cumbersome to dredge with. We have developed a unique system in which all dredged material enters the unit under the grizzley, rather than above. This is a much more efficient means of processing dredged material for two reasons.

First, depositing this material above the grizzley would require the dredge to lift the gravels much higher above the water level to process them. This will decrease the dredge’s suction power considerably, as well as make it less stable, and increase the rock jams encountered when dredging.

More importantly, however, is this fact: If the material is deposited on top of the grizzley (such as with other combos), then the grizzley has to be mounted at a very steep angle to allow the rocks to slide off on their own in order to prevent the hopper from quickly loading up. If the rocks will slide off, so will the gold bearing moss, roots, clays, etc., without being thoroughly washed first

The highbanker portion, often referred to as a power sluice, is different as well. The hoppers on our combos are considerably larger, and receive a dual spray manifold with the proper size and number of spray holes to closely match the performance of their respective pumps.

As previously mentioned, because our dredge runs intact, this allows the grizzley to be mounted at a much flatter angle. Simply feed bank run material into the hopper and let the washing action do its job until it has completely dissolved all of the gold-bearing clays or washed off all the roots. This is quicker and certainly more efficient than shoveling the material through several times.

Keep in mind as well that all powered Proline equipment receives "Nomad" matting (also known as miners' moss) as the standard matting to work in conjunction with our triple classification for unequaled fine gold recovery.

The construction of these units is different as well. Our unique "delta box" style sluice box is much more rigid and mounts the hopper into the unit at the correct location for highbanking as well as making the unit easier to transport. The spray manifold is actually designed to be a balanced handle.

Our stands are TIG welded (as is everything else) and are solidly bolted to the bottom of the sluice box. This also adds rigidity to the entire unit, and makes for a more solid base when dredging or highbanking.

Please take a look at our comprehensive listing of dual-purpose units. If you have any questions regarding our combos, don't hesitate to contact us. We'll take the time necessary to help make your purchase the right one for you.