
The Colville River corridor serves as the industrial and transport spine of this 1920s landscape, where the Great Northern railroad links the settlements of Chewelah, Valley, and Springdale. This era marks a peak in mineral extraction across the mountains, evidenced by an extensive network of workings like the Amazon Mine, Blue Star Mine, and the Finch Magnesite Quarry. Near the town of Chewelah, the Northwestern Magnesite Plant stands as a focal point for the regional economy, processing materials drawn from the surrounding peaks.
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1901 · Spokane
USGS Topo · 1:125,000
1929 · Colville
USGS Topo · 1:125,000
1930 · Chewelah
USGS Topo · 1:125,000
1933 · Colville
USGS Topo · 1:125,000
1934 · Metaline
USGS Topo · 1:125,000
1936 · Marcus
USGS Topo · 1:96,000
1936 · Newport
USGS Topo · 1:96,000
1942 · Marcus
USGS Topo · 1:125,000
1942 · Metaline
USGS Topo · 1:125,000
1942 · Newport
USGS Topo · 1:125,000