Placers
The placer comprises two beds: a lower bed of 25–45 m thickness consisting of pebble-boulder material; the upper bed is 5–20 m thick and is made of sandy loam material. The …
Placer Definition & Meaning
Noun. The timberlands here are rich and varied: maple, oak, beech, birch, mountain ash, and the placer gold of timber, red spruce, prized by the lumber mills for its grain, strength, and beauty.
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Placer mining | Techniques, Processes & Equipment | Britannica
Placer mining, ancient method of using water to excavate, transport, concentrate, and recover heavy minerals from alluvial or placer deposits. Examples of deposits mined by …
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PLACER Definition & Usage Examples | Dictionary
show ipa. See synonyms for: placer placers on Thesaurus. nounMining. a surficial mineral deposit formed by the concentration of small particles of heavy minerals, as gold, …
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Zhongyuan District
Zhongyuan District Overview. Zhongyuan District (simplified Chinese: ; traditional Chinese: ; pinyin: Zhōngyuán Qū; literally: 'central plain') is one of 6 urban districts …
Placer
plac•er 1. n. 1. a natural concentration of heavy metal particles, as gold or platinum, in sand or gravel deposited by rivers or glaciers. 2. the site of a form of mining (plac′er min`ing) in …