GoldFeverProspecting.com Tips Are Very Helpful Specifically With Dredging Gold

This is a good overview of how a gold suction dredger works. It begins with a diagram showing the parts to the cycle/ process. then there is text describing design and intake size of nozzles. Power source and compressed air are also covered. The issue of suction gravel and possible stoppage are dealt with. The power jets and the header box are of importance and described. Issues of dredge flotation are briefly covered. WARNING: There are links to commercials/ad information for possible purchase. This is worth a fast read for anybody starting out who wants to prospect/ dredge with the big boys right off. Gold Fever Prospecting holds number one position in Google search with regard to most gold prospecting topics - and with good reason. Disclaimer, I have never dredged.
http://www.goldfeverprospecting.com/howdosugodrw.html

                                                      1915 Gold Dredging in Canada
                                                      Thanks to Wikipedia
Of course this photo is of a huge turn of the century dredge, while the reference above is about a small individual floating dredge using something like an inner tube or larger, not made of steel and weighing tons.