One of the most popular pieces of equipment used during gold rush times in XIX century was a rocker box, sometimes called a cradle. Collier’s New Encyclopedia from 1921 defines this device as a mechanical contrivance used in placer mining, consisting of a box on rockers and moved by hand, used for washing out the gold-bearing soil. Rocker […]
Tag: metal deposits
Why does the meteorite impact create gold deposits?
Why rich metal ore deposits can be found in places of the meteorite impact? A large astronomical object almost always evaporates after an impact on the Earth’s surface and leaves nothing but an impact crater. Only parts of the meteorite, just small splinters, can be found in the surrounding area. So where do the metal deposits […]