
Coal mining operations and intensive agricultural irrigation define this section of Weld County as it appeared at mid-century. A cluster of settlements including Firestone, Frederick, and Dacono are concentrated along the Union Pacific railroad line, showing a landscape built on the extraction of coal. This industrial focus is evidenced by the numerous named shafts and pits scattered across the quadrangle, such as the Shamrock Mine, Boulder Valley Mine, and Imperial Mine, as well as the State Coal Mine Junction.
36 named features on this map. Tap any name to fly to it.
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7 editions found
1890 · East Denver
USGS Topo · 1:125,000
1899 · West Denver
USGS Topo · 1:125,000
1902 · Greeley
USGS Topo · 1:125,000
1904 · Niwot
USGS Topo · 1:62,500
1940 · Brighton
USGS Topo · 1:31,680
1940 · Eastlake
USGS Topo · 1:31,680
1940 · Lafayette
USGS Topo · 1:31,680
1944 · Lafayette
USGS Topo · 1:31,680
1944 · Brighton
USGS Topo · 1:31,680
1944 · Eastlake
USGS Topo · 1:31,680