A frequently recurring problem in the extraction of mineral resources (especially
heterogeneous mineral resources) is the rapid operative determination of the extracted
quantity of raw material in a surface quarry. This paper deals with testing and analyzing the
possibility of using unconventional methods such as digital close-range photogrammetry
and terrestrial laser scanning in the process of determining the bulk density of raw material
under in situ conditions. A model example of a heterogeneous deposit is the perlite deposit …