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National Historic Landmark Photo Contest

by: Justin Gural, 2 years 6 months ago

9 of 13
National Historic Landmark Photo Contest

Kennicott Mines_AK, by Patrick.Gregerson. A vestige of an early 20th-century copper mining camp, Kennecott represents the mining techniques of the era. The mines here were among the nation's largest and contained the last of the great high-grade copper ore deposits of the American West. The world's first ammonia-leaching plant for extracting concentrations of ore from low-grade ores was designed and first successfully used on a commercial scale here. The camp is little changed since it closed in 1938. For more information about this NHL: www.nps.gov/wrst/historyculture/kennecot t.htm

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