43-101 2008 Technical Report On The La Fortuna Project, Durango ...

14.0 MINERAL RESOURCE AND MINERAL RESERVE ESTIMATES
14.1 HISTORICAL MINERAL RESOURCE RESERVE ESTIMATES
Several mineral resource and reserve estimates have been produced for the Property.
• The first estimate was completed by Battle Mountain in 1999 (Schumacher, 1999);
• A second resource estimate was prepared by Howe in 2002 (Howe 2002) followed by two reserve
statements (Howe, 2002 and 2003);
• Two subsequent resource estimates were prepared by Arizona-based Resource Modeling
Incorporated (RMI, 2004b and 2004c).
The above mentioned historical mineral resource-reserve estimates have been previously disclosed in the
following NI 43-101 technical reports:
A. C. A. Howe International Limited (2002), Prefeasibility Report, El Cairo Gold Project, State of
Durango, Mexico, for Castle Gold Minerals Limited, Toronto, Canada; Howe Report 845,
available for public viewing on the TSX Sedar Filing website at http://www.sedar.com/.
A. C. A. Howe International Limited (2003), Revised Prefeasibility Report, El Cairo Gold Project,
State of Durango, Mexico, for Castle Gold Minerals Limited, Toronto, Canada; Howe Report
850, available for public viewing on the TSX Sedar Filing website at http://www.sedar.com/.
A. C. A. Howe International Limited (2004), Technical Report on the 2003 Diamond Drill Program, El
Cairo Gold Project, State of Durango, Mexico, for Castle Gold Minerals Limited, Toronto,
Canada; Howe Report 861, 59 p.
A. C. A. Howe International Limited (2006), Pre-Feasibility Report El Castillo Project, Durango,
Mexico, for Castle Gold Minerals Limited, Toronto, Canada; Howe Report 897, 143 p.
The Battle Mountain and Resource Modeling Incorporated (“RMI”) estimates are not NI 43-101-
compliant and are therefore treated herein by Howe as “historic estimates”. Prior to the completion of
this report, the 2002 Howe resource estimate was considered the current estimate for the Property since
the estimate is CIM-based and NI 43-101-compliant and has not been superseded by a more recent NI 43-
101-compliant estimate. It should be noted that the authors of this report were not involved in the
preparation of the 2002 Howe estimate.
14.2 2008 HOWE RESOURCE AND RESERVE ESTIMATE
In 2008, at the request of Castle Gold, Howe has revised the 2002 pre-feasibility study for an operational
scenario which reviewed an increase annual production to 4,000,000 tpy at a higher average gold price
compared to the 4,000,000 tpy scenario that was the operational criteria in the 2002 report.
Howe’s methodology for the revised resource estimate remains the same (refer to Howe report No. 845,
896) except for some adjustments made to the topographic data as well as account for material mined to
date by Castle Gold during their pre-production stage of development work at El Castillo.
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