Browsing by Author "Warner, RK"

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    Australian uranium resources, development and supply
    (Australian Atomic Energy Commission, 1978-09-25) Battey, GC; Warner, RK
    The geologically favourable areas for the occurrence of uranium in Australia and the geology of major deposits are discussed as well as exploration programs and expenditures. Australia has no short-term requirement for nuclear power generation and its reserves of 289.000 tonnes uranium, together with the prospects for further discoveries indicate that the country is destined to become a major exporter of uranium. The Government's decisions on the development of the uranium miming and milling industry are outlined and information is given on the plans to bring new projects into operation.
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    Graphite fuel studies, Part 2: fine grinding of artificial graphite
    (Australian Atomic Energy Commission, 1959-03) May, JR; Warner, RK
    Homogeneous dispersions of fissile and fertile material in graphite are being currently considered as fuel for high-temperature, gas-cooled nuclear reactors. A possible method of fuel preparation involves compaction of finely ground artificial graphite with U and Th metal powders. Size reduction of artificial graphite is therefore of interest in the preparation of graphite-fuel compacts. Reactor graphite has been successively size reduced in a jaw crusher, pin disc mill and ball mill to give material 50% finer than 9 microns, and with a B.E.T. nitrogen adsorption surface area ranging up to 18.4 m2/g. This variables in ball milling have been studied, and in particular it was found that Ni-hard balls gave a faster grinding rate, but a higher contamination than was obtained with steel balls. Leaching with boiling HCI was effective in removing contamination introduced by these grinding media. The Rosin-Rammler function, R = 100e - (x/x)n applied to the size distributions of the ground graphite. In the size range 70-1000 microns the distribution constant "n" equaled 1, which is consistent with publishing data for other materials. However, above and below this size range, the distribution constant approximated 2. This high value of n for the sub-sieve range has not been previously reported, but is not peculiar to artificial graphite as other materials were found to have a similar value of n.
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    Proceedings of the AAEC symposium on environmental and radiological safety aspects of the mining and processing of uranium, Lucas Heights, 9-10 December 1971.
    (Australian Atomic Energy Commission, 1973-04) Warner, RK; Watson, GM; Davy, DR; Hardy, CJ; Button, JCE; Cook, JE; Conway, NF
    Review of world trends in the uranium industry (a summary); Philosophy of environmental protection and control; Sources of pollution in uranium mining and processing activities (a summary); Environmental studies for uranium provinces - aims and methods; Methods of control of potential pollutants (a summary); Introduction to radiological safety; Radiological health and safety aspects of uranium mining and ore treatment; Biological effects of radiation; History of radiation effects and control in uranium mining; The nature of the dosimetry problem; Practical dosimetry in uranium mining; Prospects for control of radiological hazards in uranium mining.