
Mining operations dominate this high-altitude landscape where the Deerlodge National Forest and Helena National Forest meet. The map reveals a dense network of gulches and mineral claims, centered around the settlement of Comet and its associated Tailings. Significant extraction sites are scattered across the terrain, including the Eva May Mine in the northwest and the Free Enterprise Mine near the southern boundary. These labels reflect over a century of hard-rock mining activity in the region, punctuated by names like Boulder Chief Mine and the Washington Mine.
40 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1889 · Helena
USGS Topo · 1:250,000
1893 · Helena
USGS Topo · 1:250,000
1899 · Boulder
USGS Topo · 1:125,000
1899 · Helena
USGS Topo · 1:250,000
1903 · Helena
USGS Topo · 1:250,000
1947 · Butte
USGS Topo · 1:250,000
1950 · Jefferson City
USGS Topo · 1:62,500
1954 · Elk Park
USGS Topo · 1:62,500
1954 · Basin
USGS Topo · 1:62,500
1954 · Boulder
USGS Topo · 1:62,500