Results: 1 - 5 of 5
Oct 15, 2020
Map
… for management of groundwater, aggregate, and energy resources, as …
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, 1977
Open File Report
… the best seam thickness and the aggregate footages of all seams 3 …
Jul 05, 2015
Data
… provide any direct assessment of aggregate quality or thickness, and …
Dec 31, 1987
Open File Report
… man-made excavations such as aggregate quarries. Samples of the …