Puddling machines, or "puddlers" were pioneered on the Victorian goldfields in the early 1850s. This technology was developed as an affordable way of processing gold-bearing clay on a large scale.
Puddling machines are a very significant development in the history of Victorian gold mining, as they are the only technology or method developed entirely on the
Victorian Goldfields.
The characteristic clay earth of the goldfields region posed a problem to the 19th century miners - gold was trapped within the hard lumps of clay and in order to retrieve it, these lumps needed to be effectively broken up.
A circular trough in the ground, lined with wood or bark, was filled with clay and water. A horse circled the trough and dragged a harrow through the clay mixture, breaking up the lumps and turning it into a runny sludge. The gold released from the clay would sink to the bottom, and the watery clay would be drained off from the top. The residue at the bottom of the trough would then be cleaned up with a pan or cradle to collect the gold.
BBQ
Maryborough
