[en] The method is described of the many times scattered gamma-radiation spectra analysis from the point of view of obtaining information on such parameters of the medium measured as density; percentage of the heavy element content; borehole diameter and the heavy element's granulation. In the case, when there are two heavy elements in the ore, greatly differing by their atomic numbers, it is possible to interret the results simultaneously for determining concentrations of the both elements. The method described is based on the numeric analysis of the spectra registred by means of the 128-chanel analyser. Special software permits to introduce into a computer certain number of spectra, differing by the preset parameters. The computer program sorts the spectra by twelve constant and three variable energy limits, according to the first maximum, and determines, for different limits, the so colled spectra factors. All together, 175 spectra factors are determined, classified, classified according to decrease of the stability in the process of changes of the observed parameters. The final aim of the computer program is to separate 10 the most changing factors, serving for ploting curves. Comparing all 175 factors in the function of change of the modeling parameters, it is possible to separate some of them, distinguished by their high sensitivity to the changes of one of the parameters with simultaneous stability of the factor in the function of changes of the rest parameters. According to the results of the laboratory investigations, it has been established that use of different spectra factors permits to determine simultaneously such parameters as the changes of density; borehole's diameter; concentrations of the heavy elements and their granulation