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Industrial Sand Potential in Wisconsin: Sandstone at or near the Surface
Shows where sandstone can be found within 100 ft (30 m) of the surface.-
Industrial Sand Potential in Wisconsin: Sandstone at or Near the Surface
2013
Map: 21 in x 22.5 in, scale 1:1,000,000
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The Clays and Clay Industries of Wisconsin
Bulletin is titled Part 1; however, Part 2 was never published.