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cyanide process
(Encyclopedia)cyanide process or cyanidation, method for extracting gold from its ore. The ore is first finely ground and may be concentrated by flotation; if it contains certain impurities, it may be roasted. It i...East Coolgardie Goldfield
(Encyclopedia)East Coolgardie Goldfield ko͞olgärˈdē [key], Western Australia, SW Australia. It is the richest gold field in Australia. The chief mining center is the town of Kalgoorlie. Coolgardie, of little im...Obuasi
(Encyclopedia)Obuasi ōbwäˈsē [key], town (1984 pop. 60,617), S central Ghana. Highly concentrated gold ore is mined, and there are gold-extraction plants. Gold was mined in Obuasi by indigenous peoples as early...Goldfield
(Encyclopedia)Goldfield, small town, SW Nev., a former gold-mining center. Gold was discovered there in 1902, and after an early period of disappointment, large yields of high quality gold were extracted. A rush in...Mother Lode
(Encyclopedia)Mother Lode, belt of gold-bearing quartz veins, central Calif., along the western foothills of the Sierra Nevada. The term is sometimes limited to a strip c.70 mi (110 km) long and from 1 to 61⁄2 mi...Au
(Encyclopedia)Au, symbol for the element gold.Joyner-Kersee, Jackie
(Encyclopedia)Joyner-Kersee, Jackie joiˈnər-kûrˈzē [key], 1962–, American track and field athlete, b. East St. Louis, Ill. One of the world's best all-around women athletes, she won the silver medal in the h...Biles, Simone Arianne
(Encyclopedia)Biles, Simone Arianne, 1997–, American gymnast, b. Columbus, Ohio. Known for her consistency and the high degree of difficulty of her routines, she was the first gymnast to win three consecutive wor...Kirkland Lake
(Encyclopedia)Kirkland Lake, mining town, E Ont., Canada. An important gold-mining center, gold was discovered there in 1911 and again in the 1980s at Harker. The mining of iron ore and tourism are two other import...Clearwater, river, United States
(Encyclopedia)Clearwater, river, c.190 mi (305 km) long, rising in several branches in the Bitterroot Range, N Idaho, and flowing west to join the Snake River at Lewiston, Idaho. The gold-mining era in Idaho began ...Browse by Subject
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