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
Figure 12.37: Pulp Splits and Reject Duplicate Samples – Zn% (N=524)
12.3.5 Mercator Program
August 2011 Site Visit Program
During the August 2011 site visit by Mercator, quarter core samples were obtained from
Apogee drill core for purposes of independent check sample analysis. In total, 9 quarter core
samples were collected to provide sample coverage across the Ag, Pb and Zn grade ranges
represented in the deposit. Sample record details pertaining to the program appear in
Appendix 1. The quarter core samples were collected from drill holes PUD111, PUD134,
PUD140, PUD144, PUD175, PUD188, and PUD203 and were submitted for analysis to SGS
del Peru S.A.C. A sample of certified reference material CDN-SE-1, a commercial blank
sample, and 4 reject samples were added to the batch of core samples submitted by
Mercator for quality control and quality assurance purposes.
Sample intervals of archived drill core were selected and marked by Mercator and then
photographed prior to being placed in labeled plastic bags for shipment to the laboratory.
Core intervals taken for check sample purposes were clearly identified by explanatory tags
secured in the core boxes for archival reference purposes. All core sampling work was
carried out at the Apogee core logging facility on the Pulacayo property by Mercator and
Apogee field staff carried out sample cutting and bagging activities under Mercator
supervision.
After standard crushing and pulverization, Ag, Pb, Zn and Cu levels were determined using
SGS code ASS11B element analysis, which incorporates Aqua Regia digestion followed by
AAS determination, and a Fire Assay – FAG313 finish for samples with Ag values greater
than 300 g/t. Specific gravity measurements for all prepared sample pulps were also
completed using pycnometer instrumentation (PHY03V Code).
TWP Sudamérica S.A. Av. Encalada 1257 Of. 801, Santiago de Surco Lima 33, Perú (51-1) 4377473
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