If the material drops down out of the hopper too fast, it can overwhelm the riffles and you can blow the gold right out. If it runs too slowly, the riffles can clog up and the process is too slow.

Most of the commercial mineral deposits are on the south and southwest part of the range between Minersville and Milford, though small amounts of gold and silver have also been found in iron-rich outcrops in the basalt to the south of Milford.

When we got set up and I started to swing the coil over a small mound, I got a good signal, faint but repeatable.

As I arrived at my detecting location, I got all my gear and headed up the trail. I had to stop and take in the devastation all around me.

There is a material processing principle widely used in large milling operations to improve recovery that is poorly understood by most of the micro-mining and prospecting community...