Building a powered dredge is one of the most efficient ways to rapidly sift through large amounts of soil in search of solid gold nuggets. Dredges work by pumping water over soil to wash away lightweight.
This map shows the known gold deposits in Australia. Payable gold was first discovered in Australia in 1851 near Bathurst in New South Wales which triggered the beginning of the Australian gold rush. Gold was found 6 months later in Ballarat
Where to Find and What to Look for When Gold Prospecting and Panning