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 12.43 : Mercator Reject Check Samples - Zn % (N=4)
April 2012 Site Visit Program
During the April 2012 one site visit by Mercator, quarter core samples were obtained from
Apogee oxide zone drill core for purposes of independent check sample analysis. In total,
23 quarter core samples were collected to provide sample coverage across the Ag, Pb and
Zn grade ranges represented in the oxide zone. The quarter core samples were collected
from drill holes PUD266, PUD230, PUD220, PUD251 and PUD256 and were submitted for
analysis to SGS del Peru S.A.C.. A sample of certified reference material CDN-SE-1 and a
commercial blank sample 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 (Figure 12.44). 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
the same preparation and analytical methods that were used in the previous Mercator
program described above.
Mercator core check sample results are compared to original Apogee results in Figure 12.45,
Figure 12.46 and Figure 12.47 for Ag, Pb and Zn respectively. Results are interpreted as
showing that acceptable correlation exists between the original oxide zone analyses and the
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