Abstract
A newly developed spectrometric borehole logging tool (ZERO PROBE) has undergone several field tests on black coal deposits in Queensland and New South Wales. The results of these tests are presented in the paper. The ZERO PROBE utilizes a137Cs gamma-ray source with a strength of only 1.1. MBq, which is three orders of magnitudes less than the source activities applied in standard commercial beforehole logging tools. The field tests have proved high bed resolution of the ZERO PROBE for coal seam delineation, and also, the probe's suitability for quantitative coal ash determination.
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References
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Charbucinski, J., Ceravolo, C. & Tchen, T. Ultra-low activity spectrometric probe for the coal mining industry. Journal of Radioanalytical and Nuclear Chemistry, Articles 206, 311–319 (1996). https://doi.org/10.1007/BF02039658
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DOI: https://doi.org/10.1007/BF02039658