Pulacayo Project Feasibility Study - Apogee Silver

Pulacayo 1 000 t/d Phase I Feasibility Study - NI 43-101 Technical Report
090644-3-0000-20-IFI-100
metals show an acceptable degree of consistency between the block model and the
independently derived interpretations of the deposit.
Figure 14.22: Isometric View of the Oxide Zone Block Silver Grade Distribution
Descriptive statistics were calculated for the drill hole composite values used in block model
grade interpolations and these were compared to values calculated for the individual blocks
in the block model (Table 14.8). The mean drill hole composite grades were found to
compare acceptably with corresponding grades of the block model, thereby providing a
general check on the model with respect to the underlying assay composite population.
Descriptive statistics for Ag grades show a decrease in mean grade between the block model
and the contributing sample dataset that is a result of the substantial number of low silver
grade blocks occurring along the western limit and along the top 100 m of the model
compared to the number of drill hole composites that represent these areas of the deposit.
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