Tintic Standard Reduction Mill

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Tintic Standard Reduction Mill
Tintic Standard Reduction Mill.jpeg
Tintic Standard Reduction Mill, June 2009
Tintic Standard Reduction Mill is located in Utah
Tintic Standard Reduction Mill
Tintic Standard Reduction Mill is located in the United States
Tintic Standard Reduction Mill
Nearest cityGenola, Utah
United States
Coordinates39°57′26″N 111°51′10″W / 39.95722°N 111.85278°W / 39.95722; -111.85278Coordinates: 39°57′26″N 111°51′10″W / 39.95722°N 111.85278°W / 39.95722; -111.85278
Area0.1 acres (0.040 ha)
Built byMadge, W.C.
NRHP reference #78002700[1]
Added to NRHPSeptember 13, 1978

The Tintic Standard Reduction Mill—also known as the Tintic Mill or Harold Mill—built in 1920, and only operating from 1921 to 1925, is an abandoned refinery or concentrator located on the west slope of Warm Springs Mountain on the southern edge of Genola, Utah, United States.


Looking down on the Warm Springs in Genola, May 2008

The mill was designed and built by W. C. Madge. It is significant as the only American mill using the Augustin process during the early 1920s.[2]. Metals processed at the mill included copper, gold, silver, and lead, all of which were received from another mill near Eureka. The metal content of ore was increased through the process to make transportation less expensive. The reducing process used was an acid-brine chloridizing and leaching process which became outdated, leading to the abandonment of the site in 1925. At the mill's highest productivity it processed 200 tons of ore yearly from the Tintic Mining District.

What remains of the mill are foundations for water tanks, crushers, roasters, iron boxes, leaching tanks, and drain boxes. The site dominates the surrounding landscape with its size and unique colors and shapes. It has been speculated that the mill may be the contributor of heavy metal pollution in the Warm Springs which lie below it.

It was listed on the National Register of Historic Places in 1978.[1]

See also[edit]


  1. ^ a b National Park Service (2010-07-09). "National Register Information System". National Register of Historic Places. National Park Service.
  2. ^ Philip F. Notarianni (January 30, 1978). "National Register of Historic Places Inventory/Nomination: Tintic Standard Reduction Mill". National Park Service. and accompanying two photos from 1977

External links[edit]