Using a sluice box to extract gold from placer deposits has long been a very common practice in prospecting and small scale mining. A sluice box is essentially a man made channel with riffles set in the bottom.
Earth Science Geochemistry Engineering amp; Materials Other Engineering DisciplinesMining engineering Geochemical prospecting he use of chemical properties of naturally occurring substances (including rocks,
Mining Mining, process of extracting useful minerals from the surface of the Earth, including the seas. A mineral, with a few exceptions, is an inorganic substance occurring in nature that has a definite chemical composition and distinctive physical properties or molecular structure.