1954 年 70 巻 788 号 p. 59-62
The auther made a trial of mine water leak at Ogoya Mine (Nihon Kogyo Co., Ltd.) by using isotope P32 and other inorganic reagents. Its results are as follows:
1. At first, it isnecessary, on such a test, to eiamine the character of adsorptivity of the reagents and for the geological structure and the nature of soil.
2. By using isotope P32, different from general reagent, the relation of time of leak and volume of water is made clear precisely with geological structure.