Mining history and ranching define the upper Blackfoot River corridor in this Montana landscape. The area is marked by a dense concentration of mineral extraction sites, particularly in the southeastern reaches where the Seven Up Pete Mine, Swansea Mine, and Silver Bell Mine are located alongside the Swansea Tailings. These sites, clustered near Davis Gulch and Poorman Creek, suggest a legacy of hard-rock mining that shaped local development.
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1889 · Helena
USGS Topo · 1:250,000
1893 · Helena
USGS Topo · 1:250,000
1899 · Helena
USGS Topo · 1:250,000
1903 · Coopers Lake
USGS Topo · 1:125,000
1903 · Helena
USGS Topo · 1:250,000
1943 · Hogan
USGS Topo · 1:125,000
1947 · Butte
USGS Topo · 1:250,000
1955 · Choteau
USGS Topo · 1:250,000
1957 · Choteau
USGS Topo · 1:250,000
1958 · Butte
USGS Topo · 1:250,000