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
Apogee QAQC programs is of quality acceptable for resource estimation use. The Micon
report should be consulted if access to more detailed information pertaining to drilling
programs carried out by Apogee prior to January 2010 is required. QAQC discussions
presented below in this report pertain only to drilling carried out by Apogee since January
2010.
12.3.2 Certified Reference Material Programs
January 2010 to July 2011
The following description of certified reference material program results is taken from Cullen
et al (2012) with only minor local modification of text to match the current reporting context.
Apogee has used three certified reference standards since the Phase IV drilling program
commenced in January of 2010. These are CDN-SE-1, obtained from CDN Resource
Laboratories (CDN) of Burnaby, BC and PB128 and PB138, obtained from WCM Minerals
Ltd. (WCM) of Burnaby, BC. CDN-SE-1 has been used since the start of the Phase IV drill
program, beginning with drill hole PUD141, and remained in use at the effective date of this
report. PB128 was used in pre January 2010 programs, beginning with drill hole PUD061,
and was replaced by PB138 at drill hole PUD207. Descriptions for all certified reference
materials appear in the previously disclosed resource estimate technical report by Cullen et
al. (2012) and Table 12.1 presents their certified mean values.
In total, results for 178 certified reference samples submitted for analysis were reviewed for
this project period. This includes all certified reference samples used during the Apogee
Phase IV drilling program during the period plus those pertaining to Phase III drill holes
PUD134 through PUD138 for which assay results had not be received at the time of the
Micon PEA in 2010. Reference samples were systematically inserted into the laboratory
sample shipment sequence by Apogee staff that ensured that at least one standard was
submitted for every 50 samples. Records of reference standard insertion were maintained as
part of the core sampling and logging protocols.
Table 12.1: Certified Reference Materials Data for January 2010 to October 2011 Period
Certified Mean Value ±2 Standard Deviations
Reference Material Ag g/t Pb % Zn % Number
CDN-SE-1 712 ±57 1.92 ±0.09 2.65 ±0.20 82
PB128 181 ±16.41 4.43 ±0.342 2.25 ±0.18 91
PB138 199 ±8.958 2.04 ±0.149 2.08 ±0.124 5
The CDN-SE-1 standard was used exclusively during the Phase IV drill program initiated in
January 2010 and is still in use by Apogee. In total, 82 samples of the material were analyzed
during the drilling period covered in this report section, with samples submitted in association
with drill holes PUD141 through PUD214. Returned Ag values fall within a +15 g/t and -55 g/t
range of the 95% confidence interval certified mean range and the average value of 698.75
g/t falls within the mean ±2 standard deviations control limits. One sample value falls below
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