lake-bed placer

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• Placer mining — (pronounced plass er ) refers to the mining of alluvial deposits for minerals. This may be done by open pit (also called open cast mining) or by various forms of tunneling into ancient riverbeds. Excavation may be accomplished using water… …   Wikipedia

• placer — ► NOUN ▪ a deposit of sand or gravel in the bed of a river or lake, containing particles of valuable minerals. ORIGIN Latin American Spanish, deposit, shoal …   English terms dictionary

• placer — placer1 noun 1》 a person who places something. 2》 a person or animal gaining a specified place. 3》 Brit. informal a dealer in stolen goods. placer2 noun [often as modifier] a deposit of sand or gravel in the bed of a river or lake, containing… …   English new terms dictionary

• river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …   Universalium

• Confederate Gulch and Diamond City — Confederate Gulch is a steeply incised valley on the west facing slopes of the Big Belt Mountains. Its small stream drains westward into Canyon Ferry Lake, on the upper Missouri River Valley near present day Townsend, Montana. In 1864 Confederate …   Wikipedia

• literature — /lit euhr euh cheuhr, choor , li treuh /, n. 1. writings in which expression and form, in connection with ideas of permanent and universal interest, are characteristic or essential features, as poetry, novels, history, biography, and essays. 2.… …   Universalium

• California State Route 89 — State Route 89 Sierra Highway …   Wikipedia

• Helena, Montana — Infobox Settlement official name = Helena, Montana settlement type = City nickname = Queen City motto = imagesize = image caption = image mapsize = 250px map caption = Location in Lewis and Clark County, Montana mapsize1 = map caption1 =… …   Wikipedia

• Atlantic Ocean — an ocean bounded by North America and South America in the Western Hemisphere and by Europe and Africa in the Eastern Hemisphere. ab. 31,530,000 sq. mi. (81,663,000 sq. km); with connecting seas ab. 41,000,000 sq. mi. (106,100,000 sq. km);… …   Universalium

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• San Joaquin River — Coordinates: 38°04′00″N 121°51′04″W / 38.0666667°N 121.85111°W / 38.0666667; 121.85111 …   Wikipedia