Results: 1 - 4 of 4
Dec 31, 1977
Open File Report
… m) or greater in thickness and aggregate thicknesses of all seams … greater in thickness but with an aggregate thickness of 5 ft (1.5 m) …
Dec 31, 1981
Economic Geology Report
… used for production of expanded aggregate. Further testing of the …
Mar 07, 2011
Open File Report
… groundwater studies, aggregate resource assessments, …
Dec 31, 1979
Earth Sciences Note
… use as raw material for expanded aggregate production. Structural …