Radiation in uranium mines A manual of radon gas emission characteristics and techniques for estimating ventilating air requirements PART 3

CIM Bulletin, Vol. 75, No. 847, 1982

R.W. THOMPKINS, Emeritus Professor of Mining Engineering, Queen's University, Kingston, Ontario, and Registered Specialist, Mine Environmental Engineering, Association of Professional Engineers of Ontario

Part 1 of this paper, published in the September issue, covered the occurrence of uranium, radiation from uranium ores, the uranium series, radioactive theory, radioactive equilibrium and application to the radon series, the working level, the theory of emanation and diffusion, transport by thermal diffusion of radon emanating from porous rocks, and definitions. The October issue carried Part 2, which dealt with radiation theory applied to uranium ores, other radon migration factors, factors affecting the radon gas release rate, the measurement of radon gas emanation rates, the tunnel concept, variation of emanation rate with grade and estimating radioactivity from grade analysis. Part 3, in this issue, concludes the series by discussing the techniques for controlling radiation and providing some example calculations.