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Rio Tinto Borax mine and plant, 2012 Rio Tinto Borax mine from ISS, 2013 Borax crystals, Boron Mine. Scale is one inch, ruled at one cm. The Rio Tinto Boron Mine (formerly the U.S. Borax Boron Mine) in Boron, California is California's largest open-pit mine and the largest borax mine in the world, producing nearly half the world's
The area was an important part of what became known as the North Arkansas Lead and Zinc District, and played a role in the development of railroads and modern infrastructure in the area. During World War I the Rush Creek mines were the center of the zinc industry in Arkansas. Ten mining companies operated 13 developed mines within the district ...
In 1883, prospectors discovered a rich vein of colemanite borax in the Calico Mountains 4 miles east from the silver mining town of Calico. The claim was bought by mining tycoon William Tell Coleman, who owned and worked several borax mines in Death Valley, including the Harmony Borax Works, famous for the Twenty-mule teams which were used to haul borax to the railroads at Mojave, California.
This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Craighead County, Arkansas, United States. The locations of National Register properties and districts for which the latitude and longitude coordinates are included below, may be seen in a map.
Location of Boone County in Arkansas. This is a list of the National Register of Historic Places listings in Boone County, Arkansas. This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Boone County, Arkansas, United States. The locations of National Register properties and ...
View history; Tools. Tools. move to ... Pages in category "Mining in Arkansas" ... This list may not reflect recent changes. 0–9. 1915–1917 Wheelbarrow Mine ...
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In 1956, the Pacific Coast Borax Company merged with United States Potash Corporation to form U.S. Borax, which itself was acquired by Rio Tinto Minerals (Rio Tinto Group) in 1967. As a wholly owned subsidiary , the company now is called Rio Tinto Borax and continues to supply nearly half the world's borates.