Results: 1 - 6 of 6
Dec 31, 1981
Economic Geology Report
… used for production of expanded aggregate. Further testing of the …
Oct 16, 2005
Map
… and gas activities. Minerals and aggregate resource information data …
Oct 16, 2005
Map
… and gas activities. Minerals and aggregate resource information data …
Dec 31, 1977
Open File Report
… the best seam thickness and the aggregate footages of all seams 3 …
Dec 31, 1975
Open File Report
… 5 feet thick are outlined. Aggregate thicknesses of coal are …
Dec 31, 1979
Earth Sciences Note
… use as raw material for expanded aggregate production. Structural …