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
14.3.4.11 Resource Category Parameters Used in Current Estimate
Mineral resources presented in the current updated estimate have been assigned to Inferred
and Indicated resource categories that reflect increasing levels of confidence with respect to
spatial configuration of resources and corresponding grade assignment within the deposit.
Several factors were considered in defining resource category assignments, including drill
hole spacing, geological interpretations, and number and range of informing composites.
Apogee has significantly improved the quality of the underground workings model since the
previous resource estimate by Mercator that incorporated an Inferred category buffer zone
around the digital workings model. A similar Inferred category envelope was not included in
the current estimate
Additional specific definition parameters for each resource category applied in the current
estimate are set out below and Figure 14.15 through Figure 14.18 illustrate spatial
distribution of these categories and the underground workings within the block model.
Measured Resource: There are no interpolated resource blocks with the certainty of definition
suitable for classification in this category present in the current estimate.
Indicated Resources: All interpolated blocks that occur within the peripheral deposit
constraint with one or more of the interpolated metals qualifying to have at least 7
contributing assay composites with a maximum average distance of 70 m to a block centroid
and the nearest contributing composite at 60 m or less from a block centroid are categorized
as Indicated mineral resources.
Inferred Resources: All interpolated blocks that occur within the peripheral deposit constraint
that do not meet Indicated resource category requirements, or for which grades were
interpolated through drill intervals without sampling are categorized as Inferred mineral
resources.
Figure 14.15: Isometric View of the Mineral Resource Categories – View to NW
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