Mercur. hard rock mining ghost town in Tooele County, Utah,

[jeff of pa]

In 1891, it became the site of the first successful use of the cyanide process of gold extraction in the United States, the dominant metallurgy today.

The Salt Lake herald. [volume] (Salt Lake City [Utah]), 31 Dec. 1899.


https://chroniclingamerica.loc.gov/...xt=&andtext=&dateFilterType=yearRange&page=74

 

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