| Title | Date | Type | Setname | ||
|---|---|---|---|---|---|
| 1 |
 | 1000 foot level of Ontario #3 | 1880; 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; 1919 | Image | pc_hsm |
| 2 |
 | 5 miners working in mill | 1900; 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; 1940 | Image | pc_hsm |
| 3 |
 | 600 Station Ontario #3, miners and ore car | 1880; 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; 1919 | Image | pc_hsm |
| 4 |
 | Abandoned mine at Treasure Mountain Resort | 1961; 1962 | Image | pc_hsm |
| 5 |
 | Alta, Utah p.10 | Image | dha_cp | |
| 6 |
 | Alta, Utah p.11 | Image | dha_cp | |
| 7 |
 | Alta, Utah p.13 | Image | dha_cp | |
| 8 |
 | Alta, Utah p.21 | Image | dha_cp | |
| 9 |
 | Alta, Utah p.3 | Image | dha_cp | |
| 10 |
 | Alta, Utah p.4 | Image | dha_cp | |
| 11 |
 | American Flag Mine | 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969 | Image | pc_hsm |
| 12 |
 | American Gilsonite - Bonanza | 1955 | Image | ucl_tp |
| 13 |
 | American Gilsonite - Bonanza | 1955 | Image | ucl_tp |
| 14 |
 | Arthur, Utah p.1 | 1914-02 | Image | dha_cp |
| 15 |
 | Arthur, Utah p.2 | 1914-02 | Image | dha_cp |
| 16 |
 | Asphalt Mining P.1 | 1907-04-21 | Image | dha_cp |
| 17 |
 | Asphalt Mining P.2 | 1907-04 | Image | dha_cp |
| 18 |
 | Asphalt Mining P.3 | 1907-04 | Image | dha_cp |
| 19 |
 | Asphalt Mining P.4 | 1907-04 | Image | dha_cp |
| 20 |
 | Asphalt Mining P.5 | 1907-04 | Image | dha_cp |
| 21 |
 | Assay office laboratory | 1880; 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; 1919 | Image | pc_hsm |
| 22 |
 | Atlas Corporation P.1 | Image | dha_cp | |
| 23 |
 | Atlas Corporation P.2 | Image | dha_cp | |
| 24 |
 | Atlas Corporation P.3 | Image | dha_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. | Image | uum_map |