Re: ...from my arm chair
in response to
by
posted on
May 26, 2011 01:47PM
San Gold Corporation - one of Canada's most exciting new exploration companies and gold producers.
The 2009 bulk sample milling at Hinge recovered 16,052 ounces of gold. Assuming 93% mill recovery, 95% mine recovery, and 20% dilution the bulk sample equates to an in-situ resource of 45,000 tonnes grading 0.38 ounces per ton. This reconciles well with the average grade of the Hinge uncapped measured plus indicated resources. Further, monthly average grade fed to the mill (based on hourly mill belt samples) ranged from 0.25 to 0.64 ounces per ton, which indicates the variability of average grades over an area approximately 400 feet high by 700 feet along strike. Reconciliation of Company’s diluted, recoverable reserve estimates based on assay data, underground face samples, and mill belt samples indicate that the sampling and assaying protocols are providing good quality data. GEOE
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San Gold Rice Lake Project, October 2010 Page 6
The Company monitors the QAQC information for the assaying process on a regular basis (standards and blanks sent to
assay laboratories and the duplicates and replicates done by the laboratories). The Author has reviewed this information
and found no serious discrepancies that had not been recognized and dealt with by the Company geologists.
The mineral resources are defined in terms of NI 43-101 regulations and their estimation was carried out using industry
standard polygonal longitudinal section methodology. The drill hole data was evaluated in plan and section in three
dimensional AutoCAD to determine continuity between holes. Vein structures in the RLM area have vertical extents
from 4 to 8 times their strike length. Because of this, areas of influence used around drill hole pierce points on the
longitudinal section for purposes of defining measured and indicated resources are ellipses, elongate down dip. For
measured resources an ellipse with short axis of 50 feet and long axis of 100 feet was used; and for indicated resources
an ellipse with short axis 75 feet and long axis 150 feet was used.
The Company’s production department uses Amine software for reserve estimation and mine planning. Amine is a 3D
AutoCAD based system that uses block modelling to determine reserve and resource estimates. The Author has crosschecked
the Amine methodology versus his polygonal longitudinal section methodology and has found no material
differences between the results of the two methodologies. Amine uses 3D modelling to determine volumetric
information for resources and beyond that step, the same tonnage factors are used to determine the tonnages. For
reserve estimation, the Author used the minimum mining width, recovery, and metal price criteria that are currently
used by the Production department. Cut-off grades were based upon current mining costs as presented in the economic
assessment of the Project.
The key assumptions used by the Author for conversion of measured and indicated resources to proven and probable
reserves are:
1) Resource tonnage factor 11.4 cubic feet per ton (equivalent to an average specific gravity of 2.8)
2) Minimum mining width 5 feet horizontal.
3) Mill Call Factor 95%
4) Mill Gold Recovery 93%
5) Gold price US$1200, Canadian$1260 at 1.05 exchange rate.
6) External cut-off grade 0.13 ounces per ton (based upon total operating costs of $165/ton and taking
into account mill gold recovery and the assumed price of gold).
7) Internal cut-off grade 0.10 ounces per ton (based upon total mining costs (ore delivered to mill) of
$123/ton and taking into account mill gold recovery and the assumed price of gold)..
The Author concludes that the work completed to date on the Property has demonstrated the presence of significant gold
reserves and resources that warrant additional surface and underground exploration and development programs with the
objective to confirm the geometry and continuity of the vein structures and to confirm sufficient measured and indicated
mineral resources to warrant completion of internal feasibility studies.
The economic assessment contained in this Report indicates that the Rice Lake Project is economically viable. The
following is a summary of key economic results.
SUMMARY OF KEY ECONOMIC RESULTS
(Canadian dollars unless indicated otherwise)
Life of Mine (“LOM”) 5.5 years
LOM Tons Mined 1,908,812
LOM Ounces Gold Produced 618,515
LOM Average Assumed Gold Price US$ 1200
LOM Average Breakeven Gold Price US$ 575
Total Revenue $778,898,235
Total Operating Costs $315,485,383
Cashflow from Operations (EBITDA) $463,412,852
Capital Costs $ 56,807,000
Cash Surplus before taxes $406,605,852
The economic assessment includes only measured and indicated resources, however, all of the development capital
required to convert the inferred resources to reserves and develop those resources has been included in the economic
assessment.
GEOE
X
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San Gold Rice Lake Project, October 2010 Page 7
Over a 5.5-year mine-life the project will generate $407 million cash surplus before taxes and cashflow from operations
(EBITDA) of $463 million (average EBITDA approximately $84 million per year). The breakeven life-of-mine gold
price is US$575 to allow for recovery of ongoing development capital expenses.
The project has positive cash flow from operations at gold prices in excess of US$575.
In Geoex’s opinion, given the current inventory of approximately 3.7 million tons of inferred resources and the long
operating history of the Rice Lake Project, it is probable that sufficient inferred resources will be converted to resources
to achieve a minimum of 10 years of mine life.
NI 43-101 Cautionary Note - Mineral resources that are not mineral reserves do not have demonstrated economic
viability and there is no certainty that the results of the economic assessment will be realized.
The capital development allocated in the model is sufficient to fund conversion of inferred resources to reserves and as
well has the capability to potentially add additional inferred resources to the current indicated resource inventory.
The Author concludes that the work completed to date on the Property has demonstrated the presence of significant gold
reserves that should, subject to the various economic risks of variation in gold prices, operating costs, and other
unforeseen economic factors, provide at least 7 years of mill feed at an average production rate of 400,000 tons milled
per year. The Property warrants additional surface and underground exploration and development programs with the
objective to confirm the geometry and continuity of the vein structures and to confirm sufficient measured and indicated
mineral resources to warrant completion of internal feasibility studies on new stoping areas and future discoveries.
The Author recommends the following:
1. The Company should continue funding an aggressive exploration program in the Rice Lake Area.
2. The Company should create a 3D model of the major shear structures and resource areas on the property to
provide a tool for use by its Exploration and Production Geologists as well as for use with third parties who
have an interest in the Property.
3. The Company should initiate underground bulk sampling programs on the L10, L13, and Cohiba exploration
targets.
4. As this Report will be made public it is inappropriate for the Author to provide other specific recommendations
relative to ongoing exploration concepts and targets.