Stephen Tyng Mather

Historical marker location:

Promontory, Utah

( Marker can be reached from the intersection of Golden Spike Road (22000 West Road) and 6400 North Road.)

July 4, 1867 Jan. 22, 1930.

Utah is home to the world's largest man-made excavation, the Kennecott Copper Mine. The mine produces copper, gold, silver, and other minerals and is located southwest of Salt Lake City.