Utah's major mining areas were West Mountain (Bingham), Park City, and the Tintic District. Park City flourished with the Ontario, Silver King, Daly-West, Daly-Judge, and Silver King Consolidated mines, among others. From these holdings came mining millionaires such as David Keith, Thomas Kearns, John Judge, and Susanna Emery Holmes (known as the Silver Queen). This newly acquired mining wealth substantially helped to change Salt Lake City's economic base and its agrarian, rural village character. Palatial mansions began to line South Temple (Brigham Street).
Samuel Newhouse, mining entrepreneur of the West Mountain and Beaver County (Newhouse) areas in the 1910s, engineered the construction of what was planned as the "Wall Street of the West." His Exchange Place development on Main Street in Salt Lake City, highlighted by the gateway formed by the Boston and Newhouse buildings, ran perpendicular to the Federal building and signified the presence of non-Mormon influence in the city. The Salt Lake Stock and Mining Exchange (founded in 1908) was located there. Salt Lake City became a regional center for foodstuffs as well as mining implements and machinery. With growth came secondary and tertiary businesses.
Metal mining also sparked population growth in Utah. In addition to introducing new industries and technology, a large amount of labor was needed to work in the mines, mills, and smelters. Mining companies sought this labor at a time when southern and eastern Europeans as well as Japanese were immigrating into the United States as part of the mass migration of the period from the 1890s to the 1920s. The social dynamics associated with immigrant peoples, their interactions, and the communities they formed were crucial accompaniments to mining and as such cannot be separated from the industry itself.