Results: 1 - 7 of 7
Dec 31, 1974
Earth Sciences Report
… … Increasing demands for quality gravel prompted an investigation … in figure 2. Investigations for gravel during the summer of 1973 … outwash, deltaic, esker and lag gravel deposits), and recent …
Jan 23, 2020
Data
… peat, humalite, and sand and gravel, as well as minerals that … rare earth elements, salt, sand/gravel, silica sand, silver, stone, … such as peat, stone, sand and gravel, bromine, iodine, and marl …
Jan 23, 2020
Map
… rare earth elements, salt, sand/gravel, shale, silica sand, stone, …
Dec 31, 1970
Earth Sciences Report
… include sand and sand and gravel lenses within the drift. …
Dec 31, 1974
Earth Sciences Report
Dec 31, 1973
Earth Sciences Report