Excerpt from Radiological Applications Program: Annual Report for Fy 1968-69 Rapid, precise, portable, nondestructive these are the characteristics of the radiation scattering technique for soil moisture and density determination that make it valuable for a number of water resources-related applications. The nuclear method is admirably suited to determining rate of water use by a crop or compaction in an earth fill. This is because it permits repeated accurate measurements of moisture content or density changes over a long period of time to virtually unlimited depths of soil. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.