The radiometric data have not been corrected for height or stripping. There is no complete record of the parameters that should be used with the system but the following have been supplied by Zoltan Beldi as the best available knowledge. alpha, beta and gamma were determined on the actual system using hand sample and the chart recorder - Zoltan thinks that the numbers reflect calculator accuracy rather than measurement accuracy. The height coefficients are for a similar system but may well be wrong. alpha 0.26142 beta 0.471 gamma 0.721 TC 0.0069/m K 0.00908/m U 0.0055/m Th 0.00715/m 2 February 1999 a number of tests showed that 0.75 of the height factors and clipping of the radalt was required 19 May 1999