Results: 1 - 4 of 4
Feb 29, 1980
Open File Report
… deposit in the area is fine and fine to medium grained sand unsuitable for the aggregate … sand with the content of gravel between 15 and 20 percent. …
Nov 30, 1979
Open File Report
… delineates areas containing sand and gravel in the St. Paul area, and …
Dec 31, 1974
Earth Sciences Report
… … Increasing demands for quality gravel prompted an investigation … 23 west of the fourth meridian and range 3 west of the fifth … tills, lacustrine materials and sand dunes which yield little or no …
Dec 31, 1982
Open File Report
… is continually being updated and this report will be recompiled … Phosphate Rock, Potash, Salt, Sand and Gravel, Sandstone-Siltstone, Silica …