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Riddle is a city in Douglas County, Oregon, United States. The population was 1,185 at the 2010 census. The population was 1,185 at the 2010 census. The Brown House, built in 1894, is listed on the US National Register of Historic Places.
In the US, the only lucrative nickel mine in Riddle, Oregon ceased operation in 1987 due to pollution concerns, but some sites are now actively re-explored as the federal government considers these deposits of strategic importance due to the increased domestic demand for electric vehicles.
This list of mines in Oregon summarizes the mines listed by the Geographic Names Information System. As of January 7, 2014, there are 595 entries. ... Nickel Mountain ...
King was left unable to walk, talk, or feed herself when she was shot execution-style by gunman Charles Carl Roberts IV inside an Old Order Amish schoolhouse in Nickel Mines on Oct. 2, 2006.
The one place in the United States where nickel has been profitably mined is Riddle, Oregon, with several square miles of nickel-bearing garnierite surface deposits. The mine closed in 1987. [81] [82] The Eagle mine project is a new nickel mine in Michigan's Upper Peninsula.
Garnierite in the nickel-silicate deposit near Riddle, Oregon, had three modes of occurrence, reflecting an orderly variation in color, specific gravity, and nickel content, which serve as useful guides for economic geologists. Pecora married Ethelwyn Elizabeth Carter of Franklin County, Kentucky, on April 7, 1947. They had two children ...
Mount Hood, which is located about 70 miles east of Portland, is Oregon's tallest peak at approximately 11,240 feet, according to the U.S. Forest Service. It attracts more than 10,000 climbers ...
Garnierite is a general name for a green nickel ore which is found in pockets and veins within weathered and serpentinized ultramafic rocks. It forms by lateritic weathering of ultramafic rocks and occurs in many nickel laterite deposits in the world. It is an important nickel ore, having a large weight percent NiO.