Reclamation of areas damaged by oil spills or natural calamitiesĪlthough dredging can have very harmful effects on the marine and aquatic environment, in some situations it may be the only option available.Removal of contaminants from the sea bed.for replenishing the sand on public beaches which might have undergone severe coastal erosion.making the water navigation or fishing easier in shallow waters.If you want to learn more about how suction dredges work and how they find gold, check out our infographic below. It also requires a large investment upfront, with the cost of equipment averaging several thousand dollars. The process involves hauling heavy equipment, lifting and moving stones too wide for the suction nozzle, fighting against the water’s current, and lots of swimming. While it may sound easy, suction dredging is much more difficult than vacuuming coins out of your couch cushions (or gold flakes out of your carpeting). In a way, the process is like a combination of the best parts of gold panning and gold dredging. These materials pass into a floating sluice, which filters and recovers the gold.

It sucks up rocks, gravel, silt, and anything else at the bottom of a streambed using a gas-powered pump and suction hose. For the amateur prospector who wants to take their hobby to the next level but doesn’t want to work in a mine, upgrading to suction dredge can be a great way to find more gold while still enjoying the great outdoors.Ī suction dredge essentially works like a heavy-duty underwater vacuum cleaner.

How does suction dredging work?