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

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10.0 SAMPLE PREPARATION, ANALYSIS AND SECURITY 10.1 SAMPLE PREPARATION AND ANALYTICAL PROCEDURES ON CORE SAMPLES Since the completion of the last NI 43-101 compliant technical report by Howe on the El Castillo Gold Project, there has been no material changes to the sample preparation, analysis and security procedures. The sample preparation, analysis and security procedures 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. 28
11.0 DATA VERIFICATION 11.1 INTRODUCTION A quality assurance and quality control program (“QA/QC”) covering the database management and sampling programs of Castle Gold’s hole twinning diamond drill program was administered and monitored on a number of levels throughout the program. A strict adherence to the data management procedures and geological administrative framework facilitated Castle Gold and Howe’s internal due diligence program. The aims of the review procedures of data collection, input, and ultimately data validation, seek to illustrate the quality of data handling achieved on the project. Where errors were identified in the database, Howe staff reviewed the erroneous data, verified the hardcopy records (i.e.; sample tag booklets, digital data files, etc.) and made the amendments if the data was incorrect. An analytical QA/QC program was not implemented by Castle Gold during this program since no local or commercial standard reference materials were available. However, Howe used blank material and initiated a particle size analysis study for monitoring ALS-Chemex’s sample preparation protocols. 11.2 ANALYTICAL DATA CORROBORATION AND QUALITY ASSURANCE AND QUALITY CONTROL PROGRAM 11.2.1 Laboratories Used By Castle Gold for the Twin Drilling Program Samples collected during Castle Gold’s twin diamond drill program were submitted to the following laboratory: • ALS-Chemex Laboratories (“ALS”), Hermosillo, Mexico (sample preparation); • ALS-Chemex Laboratories (“ALS”), Vancouver, British Columbia (sample analysis). ALS-Chemex employs a procedure of internal submission of standards and blanks as well as carrying out repeat assays on approximately 10% of the client submitted samples. ALS provides an electronic QA/QC file with the results of their internal blanks and standards analyses. ALS-Chemex’s internal QA/QC was reviewed by Castle Gold and Howe staff upon reception in order to compare ALS-Chemex’s results to Castle Gold’s QA/QC blanks. Howe has not carried out an audit of the ALS-Chemex sample preparation laboratory in Hermosillo. 11.2.2 PQ Hole Twinning Quality Assurance and Quality Control Program Castle Gold’s hole twinning diamond drill QA/QC program consisted of the following stages/steps: • Data acquisition and validation; and, • Sampling Quality Assurance and Quality Control. 11.2.2.1 Data Acquisition and Validation The following steps were carried out during the data acquisition and validation of the lithological and collar and assay data: • For the core logs, all data was recorded on hardcopy core log sheets; • The hardcopy of the core logs was reviewed by Howe’s geologist in order to verify that the number and insertion sequence of blanks was correct, and; • The geological information for each core log was then drafted onto cross-sectional maps. The lithology from the completed drillhole was then cross-referenced with the lithologies of the 29
Page 1 and 2: TECHNICAL REPORT ON THE EL CASTILLO
Page 3 and 4: SUMMARY Introduction At the request
Page 5 and 6: Castillo Remaining Mineral Resource
Page 7 and 8: Undiluted Reserves at $550 per Ounc
Page 9 and 10: epresent an incremental increase in
Page 11 and 12: TABLE OF CONTENTS 1.0 INTRODUCTION
Page 13 and 14: Table 4. Driving distances from Dur
Page 15 and 16: Castle Gold has accepted that the q
Page 17 and 18: 2.0 PROPERTY DESCRIPTION, LOCATION,
Page 19 and 20: Figure 2. Map showing mining conces
Page 21 and 22: 2.1.2.3 Property Taxes The property
Page 23 and 24: Table 5. Maximum precipitation in a
Page 25 and 26: 3.0 HISTORY The El Castillo Project
Page 27 and 28: commonly reach elevations of 2,500
Page 29 and 30: Figure 4. Cross-section through the
Page 31 and 32: At El Castillo, the presence of cha
Page 33 and 34: Toward the center of the mineralize
Page 35 and 36: 7.0 EXPLORATION In 2006, Castle Gol
Page 37: 9.0 SAMPLING METHOD AND APPROACH Th
Page 41 and 42: Morgain Minerals Inc. El Cairo Gold
Page 43 and 44: 13.0 MINERAL PROCESSING AND METALLU
Page 45 and 46: Table 9. Castle Gold test heap leac
Page 47 and 48: material is relatively consistent a
Page 49 and 50: Plate 6. View of the El Castillo si
Page 51 and 52: 14.2.1 Methods A shift of -500,000
Page 53 and 54: 14.2.4 Pit Optimization Parameters
Page 55 and 56: Undiluted Reserves at $600 per Ounc
Page 57 and 58: Table 13. Comparison of Howe 2003 a
Page 59 and 60: 15.2.2 Change of Land Use The Compa
Page 61 and 62: 16.2.1 Capital and Operating Cost E
Page 63 and 64: Table 15. Operating Cost Summary (U
Page 65 and 66: will be operating the mine indirect
Page 67: Table 17. Sensitivity Analysis - Gr
Page 70 and 71: 16.2.2 Economic Evaluation The Base
Page 72 and 73: Table 23. US$ - Mexican Peso Exchan
Page 74 and 75: • Castle Gold should complete geo
Page 76 and 77: Panteleyev, A., 1996, Epithermal Au
Page 78 and 79: 9. To the best of my knowledge, inf
Page 80 and 81: CERTIFICATE OF AUTHOR dated July 31
Page 82 and 83: Appendix A Pit Optimization Level P

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