Placer mining is a method of extracting valuable minerals from alluvial deposits, which are materials that have been transported by water and deposited in riverbeds, beaches, or other sedimentary environments. This technique primarily targets precious metals like gold and silver, as well as gemstones. Miners use simple tools such as pans, sluices, and dredges to separate the desired materials from the surrounding sediment. The process begins with locating a suitable site, often indicated by the presence of placer deposits. Once identified, miners sift through the sediment to collect heavier particles, which typically contain the valuable minerals. Placer mining is often considered less invasive than other mining methods, as it can be done with minimal environmental disruption.