Results: 1 - 2 of 2
Dec 31, 1979
Open File Report
… km 2 . A study of the sand and gravel resources of the area was … of these rivers contain coarse gravel and coarse sandy gravel which is as much as 20 m …
Dec 31, 1968
Earth Sciences Report
… Formation are beds of marl, gravel, sand, and conglomerate. The …