396 (PLT) of decimeter DDH core pieces of "intact rock"; which are reported in megapascals (MPa). In addition, should be also considered "Rock Quality Designation" (RQD), that together with fracture density and fracture type, obtained from the geometallurgical logging, are the main parameters that allow the optimization of primary crushing and blasting. On the other hand, mechanical resistance of intact rock, that is, point load test (PLT), serves to design and management of secondary and tertiary crushing comminution circuits. 3.5. Discussion Looking at Table 1 (modified after Canchaya 2016), it is very clear that the FTNIR method is the most appropriate for the implementation of a geometallurgical mineralogical database and consequently for generating a GMBM, because it is fast, cheap and does not require additional sample preparation, since it can measure up to -10 mesh particles or smaller. Currently there is a wide range of methods of instrumental analysis that allow global Geo-Metallurgical Characterization (GMC). However, to be aligned with the TRC, the GMC should be carried out, preferably, using those analyses that are "bulk" or global in nature, such as for example: whole chemistry analysis, microscopic studies of polished-thin sections, bulk mineralogical XRD analysis, whole mineralogical analysis by near infrared spectrometers (FTNIR), etc.
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