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TitleDateTypeSetname
1 1000 foot level of Ontario #31880; 1881; 1882; 1883; 1884; 1885; 1886; 1887; 1888; 1889; 1890; 1891; 1892; 1893; 1894; 1895; 1896; 1897; 1898; 1899; 1900; 1901; 1902; 1903; 1904; 1905; 1906; 1907; 1908; 1909; 1910; 1911; 1912; 1913; 1914; 1915; 1916; 1917; 1918; 1919Imagepc_hsm
2 5 miners working in mill1900; 1901; 1902; 1903; 1904; 1905; 1906; 1907; 1908; 1909; 1910; 1911; 1912; 1913; 1914; 1915; 1916; 1917; 1918; 1919; 1920; 1921; 1922; 1923; 1924; 1925; 1926; 1927; 1928; 1929; 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940Imagepc_hsm
3 600 Station Ontario #3, miners and ore car1880; 1881; 1882; 1883; 1884; 1885; 1886; 1887; 1888; 1889; 1890; 1891; 1892; 1893; 1894; 1895; 1896; 1897; 1898; 1899; 1900; 1901; 1902; 1903; 1904; 1905; 1906; 1907; 1908; 1909; 1910; 1911; 1912; 1913; 1914; 1915; 1916; 1917; 1918; 1919Imagepc_hsm
4 Abandoned mine at Treasure Mountain Resort1961; 1962Imagepc_hsm
5 Alta, Utah p.10Imagedha_cp
6 Alta, Utah p.11Imagedha_cp
7 Alta, Utah p.13Imagedha_cp
8 Alta, Utah p.21Imagedha_cp
9 Alta, Utah p.3Imagedha_cp
10 Alta, Utah p.4Imagedha_cp
11 American Flag Mine1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969Imagepc_hsm
12 American Gilsonite - Bonanza1955Imageucl_tp
13 American Gilsonite - Bonanza1955Imageucl_tp
14 Arthur, Utah p.11914-02Imagedha_cp
15 Arthur, Utah p.21914-02Imagedha_cp
16 Asphalt Mining P.11907-04-21Imagedha_cp
17 Asphalt Mining P.21907-04Imagedha_cp
18 Asphalt Mining P.31907-04Imagedha_cp
19 Asphalt Mining P.41907-04Imagedha_cp
20 Asphalt Mining P.51907-04Imagedha_cp
21 Assay office laboratory1880; 1881; 1882; 1883; 1884; 1885; 1886; 1887; 1888; 1889; 1890; 1891; 1892; 1893; 1894; 1895; 1896; 1897; 1898; 1899; 1900; 1901; 1902; 1903; 1904; 1905; 1906; 1907; 1908; 1909; 1910; 1911; 1912; 1913; 1914; 1915; 1916; 1917; 1918; 1919Imagepc_hsm
22 Atlas Corporation P.1Imagedha_cp
23 Atlas Corporation P.2Imagedha_cp
24 Atlas Corporation P.3Imagedha_cp
25 Ball mills at the Magna mill. Each cylinder contains about sixty tons of steel balls, which roll as the cylinder turns, grinding the ore between the balls.Imageuum_map
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