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Global Comparison
The global block model statistics for the OK model were compared to the global ID 2
and NN model values as well as the composite capped drillhole data. Table 14.14
shows this comparison of the global estimates for the three estimation method
calculations. In general, there is agreement between the OK model and ID 2 model
and NN model. Larger discrepancies are reflected as a result of lower drill density in
some portions of the model. There is a degree of smoothing apparent when
compared to the diamond drill statistics. Comparisons were made using all blocks at
a 0% cut-off.
Table 14.14 Global Comparison Statistics
DDH Capped
Composite
NN
Grade
ID 2
Grade
OK
Grade
Ni East 0.484 0.357 0.338 0.347
West 0.254 0.281 0.266 0.282
Co East 0.024 0.024 0.023 0.024
West 0.018 0.018 0.018 0.019
Pt East 0.530 0.449 0.413 0.428
West 0.471 0.448 0.446 0.451
Cu East 0.400 0.252 0.256 0.266
West 0.277 0.331 0.288 0.310
Au East 0.119 0.175 0.167 0.179
West 0.122 0.134 0.104 0.111
Pd East 0.453 0.355 0.339 0.347
West 0.317 0.305 0.302 0.306
Note: DDH = diamond drillhole
Swath Plots
Swath plots were generated for nickel, copper, cobalt, gold, platinum and palladium
for eastings and elevations, at 20 m intervals. These plots compare the OK
estimates with the NN and ID 2 estimates, and are illustrated below in Figure 14.10 to
Figure 14.21.
Prophecy Platinum Corp. 14-24 1193460500-REP-R0001-02
Wellgreen Project Preliminary Economic Assessment,
Yukon, Canada