Scrap Iron was also metal detecting our yard while I crushed rock and found a 1959 silver dime with his Garrett AT Pro. This little rock crusher was attached to a small air chissel. The mortar was about 6" deep and the pestle was about 8" long.
We strive to keep gold mining and rock crushing accessible for small to medium size mining operations. Small to medium size miners know that affordable production equipment, such as jaw rock crushers, hammer mills, pulverizers, portable gold processing mills are incredibly difficult to find.
The average miner can instead purchase a CrazyCrusher manual rock crusher or an electric or gas powered rock crusher and get the gold out in smaller batches. Crushing rock to recover gold can be easier, faster, and much more profitable than prospecting in over-worked streams and rivers.