Results: 1 - 2 of 2
Dec 31, 1979
Open File Report
… and availability of the resource. Seven weeks of field … the most important sources of granular material in the area are … deposits are the major source of granular material in the area. …
Dec 31, 1980
Open File Report
… and volume. The major sources of granular material in the area are … largest volume of good quality granular material that is closest …