Results: 1 - 5 of 5
Dec 31, 1982
Open File Report
… Iron, Lead Zinc, Lightweight Aggregate, Limestone, Magnetite, …
Dec 31, 1981
Economic Geology Report
… used for production of expanded aggregate. Further testing of the …
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 …