Panning is a very simple but slow mining technique. Basically you have to place some gold bearing material like river gravel into a pan and add some water. Then, you swirl the mixture around for a while. The heavier material like the gold and gold dust will settle at the bottom of the pan due to its density.
Hydraulic mining is a very efficient way to find gold but it is very bad for the environment. Water under pressure is directed against a bank of gravel deposits and the hillside would then be washed away rapidly by the force of the water. The water sediment is directed into a series of sluice boxes that would remove the gold. The water sediment would then get washed into rivers and lakes which would pollute the rivers and lakes.
Now could you tell me about hydraulic mining?
Do you think that we should use the cradling method to mine the gold?
Maybe, the Cradle or Rocker technique is pretty useful technique. A rocker is simply a rectangular wooden box, that is set at a downward angle and mounted on a rocking mechanism. At the top is a sieve, and at the bottom is a series of cleats, or “riffles.” The dirt and rock would be dumped into the top, followed by a bucket of water. The cradle would then be rocked by hand to agitate the mixture. The big rocks will get caught in the sieve, the waste will exit the lower end with the water, and the heavy gold would fall to the bottom of the box and will be caught on the riffles.