What is placer mines

Answer 1

Placer mines are a type of mining operation where precious metals, such as gold, silver, or platinum, are extracted from loose sediment or gravel deposits that are found in rivers, streams, or other water bodies. The precious metals are usually concentrated in these deposits through natural erosion processes over time. Placer mining involves techniques such as panning, sluicing, and dredging to extract the valuable minerals from the sediment.