G - Physics – 01 – V
Patent
G - Physics
01
V
358/1, 358/5
G01V 5/00 (2006.01)
Patent
CA 1145067
FIELD METHOD FOR DETECTING DEPOSITS CONTAINING URANIUM AND THORIUM ABSTRACT OF THE DISCLOSURE Locations of buried deposits are determined by detecting the presence of Pb214, Bi214, Po214, Pb210, Bi210 and Po210 in solutions obtained by chemically leaching these elements from rocks and soil. Alpha sensitive, nuclear emulsions and films are exposed to the alpha decay of Po214 and Po210. The films, when etched, will reveal the damage caused by the passage of the high energy alpha particles. The photographic emulsions are developed to display alpha tracks. Alpha track population as a function of sample size, volume of solution used, emulsion area and exposure measures con- centration of Po214 and Po210 in the sample. Anomalous concentrations suggest presence of buried deposits containing uranium. Similar anomalous concentrations of alpha tracks from Bi212 and Po212 formed in emulsions exposed to leach solutions containing Pb212, Bi212 and Po212 suggest deposits containing thorium. Plotting normalized alpha track population (numbers of alpha tracks per gram, per square mm., per hour) and sample locations suggest mineral deposit locations. - 1 -
321940
R. William Wray & Associates
Stieff Lorin R.
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