A massive machine used to collect gold ore from water filled pits. The machine was built like a boat, with a long chainsaw like arm, with Dredge Buckets attached. These buckets are larger than car seats, made of iron. The arm scoops up the ore and deposits it on a long sifter, built into the machine. The machine is about size of a large house, built like a barge. The sifted ore is then taken to a larger refinery, where the gold is more precisely taken out.

These Dredges were used commonly in Alaska (esp. Nome) during the gold rush, and many of them can still be found, lying decrepid in random ponds in the country side. The dredge buckets have been removed in some cases and used for other tasks, such as a flower bed.