Results: 1 - 6 of 6
Apr 30, 2007
Special Report
… rare diamonds have been found in gravel deposits on the northern … worked for their cobble and gravel components, but test … recover heavy minerals from the gravel washings. These minerals are …
Jan 23, 2020
Map
… rare earth elements, salt, sand/gravel, shale, silica sand, stone, …
Dec 31, 1964
Earth Sciences Report
… deposits of sand and gravel, in the form of outwash … of sand with minor amounts of gravel, are confined to Glacial …
Dec 31, 1982
Open File Report
… Rock, Potash, Salt, Sand and Gravel, Sandstone-Siltstone, Silica …
Dec 31, 1957
Earth Sciences Report
… program and a description of gravel deposits of the district are …
Oct 31, 1965
Open File Report
… panning several cubic feet of gravel from the top foot or so of …