NI 43-101 Independent Technical Report Mount ... - Adex Mining Inc.

NI 43-101 Independent Technical Report Rev 02 January 22 nd , 2010
Mount Pleasant North Zone Preliminary Assessment (Project 6526-03) 12-1
SECTION 12.0 SAMPLING METHOD AND APPROACH
The reader is directed to Watts, Griffis and McOuat (2008 and 2009) for details regarding the
results of the Fire Tower Zone and North Zone sampling methodology and approach. Information
regarding the sampling methodology and approach was obtained through discussions by WGM
personnel with G. Kooiman during the Mount Pleasant field visits and from previous geological
reports and papers provided by Adex.
All assay results reported in this document have been obtained from previous Adex reports and
from reports from previous operators that have worked on the Property. The practice of reporting
exploration results to the public has changed dramatically over the last decade. In the past, it was
largely up to the company as to what results they wished to report to the public. For example, an
acceptable practice was to only report the best assay results. Many did not choose to disclose
their sampling techniques, the name of the laboratory to which samples were dispatched or
include copies of the original assay report certificates in their final report. The best records have
been kept since Brunswick Tin Mine’s arrival on the Property in 1969 to present. The authors
have no reason or evidence to question the validity of the data presented in the historical reports.
It is the authors' opinion that all sampling methods disclosed conform to generally accepted
Canadian mining industry practice.
Since the early 1980s, there has been good ongoing continuity to the project through the
utilization of standardized log sheets, having the same personnel running the drill programs and
conducting the logging and sampling. For example, Mr. Kooiman has been associated with the
project for some 25 years, working as a geologist for Billiton, LAC, Novagold and Piskahegan and
now as a geological consultant for Adex.
The reader is directed to the WGM technical report describing the sampling methods and
approach taken by the various operators prior to June, 2006 (Watts, Griffis and McOuat Limited,
2006 and 2008, Section 12. Sampling Method and Approach). In 1986, LAC collected 74 face,
selective wall and muck samples of the North Zone Access Decline following the following
sampling method according to Gustaaf Kooiman (not previously reported in the 2006, 2008 WGM
Technical Reports):
"A face sample consisted of 20-25 fist sized samples collected at breast height across the
face. None of these samples were continuous channel samples but, instead, represented
different alteration styles and mineralization. These samples were taken to the core shack,
washed and then inspected under the microscope. The same procedure was undertaken for
the wall samples."
The various Adex sampling methods and approaches with reference to the 2008 diamond drill
program and historical core re-sampling programs is summarized below.
The 2008 drill core was logged and split in half using a hydraulic core splitter. Samples were
sealed in plastic bags, the sample tag placed in the bag and sample numbers written on the
outside of the bag using a permanent magic marker pen. The bags were then sealed and shipped
in batches by a bonded carrier to the SGS laboratory. A pulp (or reject) duplicate, unknown to the
laboratory is submitted for every batch of 10 samples as part of Adex’s quality control procedures.
A certified polymetallic standard, unknown to the laboratory, is also included with each shipment
of duplicate samples. Samples submitted to the laboratory in batches of 100 samples. One Mount
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