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Harmony Borax Works
Furnace Creek Harmony Borax Works 8-10-2012 9-07-04.JPG
Harmony Borax Works is located in California
Harmony Borax Works
Location in California
Harmony Borax Works is located in the United States
Harmony Borax Works
Location in the United States
Nearest city Stovepipe Wells, California
Built 1883
NRHP reference No. 74000339
Added to NRHP December 31, 1974

The Harmony Borax Works is located in Death Valley at Furnace Creek Springs, then called Greenland. It is now located within Death Valley National Park in Inyo County, California. It is on the National Register of Historic Places.

Origin and Twenty-mule teams

Twenty mule team wagon Harmony Borax Works sw
A twenty-mule team wagon.

After discovery of Borax deposits here by Aaron and Rosie Winters in 1881, business associates William Tell Coleman and Francis Marion Smith subsequently obtained claims to these deposits, opening the way for "large-scale" borax mining in Death Valley. The Harmony operation became famous through the use, from 1883 to 1889, of large Twenty-mule teams and double wagons which hauled borax the long overland route to the closest railroad in Mojave, California.

20 Mule Team Terminus-Mojave
20 Mule Team Terminus: Sign in Mojave,CA

During the summer months, when it was too hot to crystallize borax in Death Valley, a smaller borax mining operation shifted to his Amargosa Borax Plant in Amargosa, near the present community of Tecopa, California. The Harmony Works remained under Coleman's operation until 1888, when his business collapsed.

Frank M. "Borax" Smith

William Coleman's original holdings in the works were subsequently acquired by Frank M. "Borax" Smith in 1890, to become the Pacific Coast Borax Company with the 20 Mule Team Borax brand. Activity at Harmony Borax Works ceased with the development of the richer Colemanite borax deposits at Borate in the Calico Mountains, where they continued until 1907.

The Harmony Borax Works was placed on the National Register of Historic Places on December 31, 1974. They are part of the National Park Service historical site preservation program in Death Valley National Park.

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