Placer mining (/ˈplæsər/) is the mining of stream bed deposits for minerals. This may be done by open-pit mining or by various surface excavating equipment...

Hydraulic mining is a form of mining that uses high-pressure jets of water to dislodge rock material or move sediment. In the placer mining of gold or...

sedimentary processes. The name is from the Spanish word placer, meaning "alluvial sand". Placer mining is an important source of gold, and was the main technique...

Recreational mining is typically small-scale placer mining but has been challenged for environmental reasons. The disruption of historic gold placer deposits...

Placer County (/ˈplæsər/ PLASS-ər; Placer, Spanish for "sand deposit"), officially the County of Placer, is a county located in the U.S. state of California...

population and Placer Dome, and also later Barrick Gold, once they bought Placer Dome. In August 2005 Placer Dome had interests in 16 mining operations in...

explorers discovered placer gold in the Kenai River in 1848, but no gold was produced. Gold mining started in 1870 from placers southeast of Juneau, Alaska...

Recreational mining is typically small-scale placer mining but has been challenged for environmental reasons. The disruption of historic gold placer deposits...

panning, or simply panning, is a form of placer mining and traditional mining that extracts gold from a placer deposit using a pan. The process is one...

upper Susitna River Valley in 1898, soon followed by claim staking. Placer mining was reported in the Cache Creek drainage of the Dutch Hills by 1906...

land after the mine is closed. Mining materials are often obtained from ore bodies, lodes, veins, seams, reefs, or placer deposits. The exploitation of...

placers. Other placer deposits on the west bank of the Colorado River were quickly found, including the Picacho and Cargo Muchacho districts. Placer gold...

and silver mining because of the convenience and the ease with which mercury and the precious metals will amalgamate. In gold placer mining, in which minute...

mountains, they used placer mining to extract gold from the local waterways. Placer mines began to appear all over Park County after 1861. Placer gold was found...

placer gold discovery, achieved fame as a silver-mining district, then relied on lead and zinc in its later days. Butte, Montana began mining placer gold...

its affiliates worldwide. The series follows the placer gold mining efforts of various family-run mining companies, initially in Alaska, but then mostly...

in a placer claim is almost always gold, although other nations mine placer deposits of platinum, tin, and diamonds. In the United States, a placer claim...

used by miners and prospectors to indicate the presence of a placer formation. Placer mining activities produce a concentrate that is composed mostly of...

explorer Pedro Sarmiento de Gamboa commented that placer likely originated as a term derived from placer mining in the Antilles, where pearl fishing was done...

and one of the largest in the world as of 2016. It was found at a placer mining factory in the area of the Lower Lena River (Yakutia, Far Eastern Federal...

Watercourses often concentrate nuggets and finer gold in placers. Nuggets are recovered by placer mining, but they are also found in residual deposits where...

A gold dredge is a placer mining machine that extracts gold from sand, gravel, and dirt using water and mechanical methods. Original gold dredges were...

strip mining is done on softer minerals such as clays and phosphate removed. Smoother coal seams can also be extracted this way. With placer mining, dredge...

ore can be done two ways: placer mining, which uses water and gravity to concentrate the valuable minerals, or hard rock mining, which pulverizes the rock...

Look up placer in Wiktionary, the free dictionary. Placer may refer to one of the following: Placer deposit Placer sheep Placer mining Placer (geography)...

extended similar rules to placer mining claims in the "placer law" signed into law on July 9, 1870. The Chaffee law of 1869 and the placer law of 1871 were combined...

River Canyon in Colorado. The Montrose Placer Mining Company built the flume in the 1880s to facilitate gold mining. Some sections of the flume remain attached...

Castleman), etc. Drift mining methods were used extensively to mine placer deposits during the early years (1899- ) of the Nome mining district. During summer...

form of placer mining. However, panning cannot take place on a large scale, and industrious miners and groups of miners graduated to placer mining "cradles"...

Diamonds were reported from numerous places across India, but most of the diamond mining took place by placer mining in the drainages of the Pannar River...