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2017-03-31-Scrofty-Pea-C84ol6.Pdf TECHNICAL REPORT AND PRELIMINARY ECONOMIC ASSESSMENT ON THE SOUTH CROFTY TIN PROJECT, CORNWALL, UNITED KINGDOM FOR STRONGBOW EXPLORATION INC. LATITUDE 50o 13’ 21” N LONGITUDE 5o 16’ 32” W 30U 337,679 mE 5,565,836 mN NI 43-101 & 43-101F1 Technical Report No. 320 Eugene Puritch, P.Eng., FEC Andrew Bradfield, P.Eng. Alexandru Veresezan, P.Eng. Richard Routledge, P.Geo. Jarita Barry, P.Geo. Yungang Wu, P.Geo. David Burga, P.Geo. Alfred Hayden, P.Eng. Ernest Burga, P.Eng. Effective Date: February 16, 2017 Signing Date: March 31, 2017 TABLE OF CONTENTS 1.0 SUMMARY ............................................................................................................................1 1.1 INTRODUCTION ......................................................................................................1 1.2 RELIANCE ON OTHER EXPERTS .........................................................................4 1.3 HISTORY ...................................................................................................................4 1.4 GEOLOGICAL SETTING AND MINERALIZATION ............................................5 1.5 DEPOSIT TYPES .......................................................................................................5 1.6 EXPLORATION.........................................................................................................5 1.7 DRILLING ..................................................................................................................5 1.8 SAMPLE PREPARATION, ANALYSIS, SECURITY AND DATA VERIFICATION......................................................................................................6 1.9 MINERAL PROCESSING AND METALLURGICAL TESTING ..........................6 1.10 MINERAL RESOURCE ESTIMATE ......................................................................6 1.11 MINING METHODS .............................................................................................10 1.12 RECOVERY METHODS .......................................................................................14 1.13 PROJECT INFRASTRUCTURE ...........................................................................15 1.14 MARKET STUDIES AND CONTRACTS ............................................................15 1.15 ENVIRONMENTAL ..............................................................................................15 1.16 CAPITAL AND OPERATING COSTS .................................................................16 1.16.1 Capital Costs ..............................................................................................16 1.16.2 Operating Costs ..........................................................................................17 1.17 ECONOMIC ANALYSIS ......................................................................................19 1.17.1 Revenue......................................................................................................20 1.17.2 Costs ...........................................................................................................20 1.17.3 Net Present Value ......................................................................................20 1.17.4 Sensitivity Analysis ...................................................................................21 1.18 ADJACENT PROPERTIES ...................................................................................22 1.19 INTERPRETATION AND CONCLUSIONS ........................................................22 1.20 RECOMMENDATIONS ........................................................................................25 2.0 INTRODUCTION AND TERMS OF REFERENCE ..........................................................27 2.1 TERMS OF REFERENCE .......................................................................................27 2.2 SOURCES OF INFORMATION .............................................................................27 2.3 UNITS AND CURRENCY ......................................................................................28 3.0 RELIANCE ON OTHER EXPERTS ...................................................................................30 4.0 PROPERTY DESCRIPTION AND LOCATION ................................................................31 4.1 PROPERTY LOCATION .........................................................................................31 4.2 PROPERTY DESCRIPTION AND TENURE .........................................................31 4.3 PERMITS ..................................................................................................................34 5.0 ACCESSIBILITY, CLIMATE, LOCAL RESOURCES, INFRASTRUCTURE AND PHYSIOGRAPHY .............................................................................................................37 5.1 ACCESS ...................................................................................................................37 5.2 CLIMATE .................................................................................................................37 5.3 LOCAL RESOURCES .............................................................................................38 5.4 INFRASTRUCTURE ...............................................................................................38 5.5 PHYSIOGRAPHY ....................................................................................................39 6.0 HISTORY .............................................................................................................................41 6.1 SOUTH CROFTY MINE HISTORY .......................................................................41 6.1.1 Early History ..............................................................................................41 6.1.2 South Crofty Mine History 19th Century to Closure in 1998 ....................42 6.1.3 South Crofty Mine History and Ownership after 1998 Mine Closure .......43 6.2 HISTORIC EXPLORATION ...................................................................................44 6.3 HISTORIC PRODUCTION .....................................................................................45 6.4 HISTORICAL ESTIMATES ....................................................................................46 6.4.1 Owen and Leboutillier (1998) Closure Estimate .......................................46 6.4.2 Additional Historic Estimates ....................................................................47 6.5 PREVIOUS NI 43-101 RESOURCE ESTIMATES ................................................48 7.0 GEOLOGICAL SETTING AND MINERALIZATION ......................................................50 7.1 REGIONAL GEOLOGY ..........................................................................................50 7.2 LOCAL GEOLOGY .................................................................................................51 7.3 DEPOSIT GEOLOGY ..............................................................................................53 7.4 MINERALIZATION ................................................................................................54 8.0 DEPOSIT TYPES .................................................................................................................57 9.0 EXPLORATION...................................................................................................................59 9.1 WUM PROGRAM 2008-2013 .................................................................................59 9.2 TIN SHIELD PROGRAM ........................................................................................59 10.0 DRILLING ..........................................................................................................................60 11.0 SAMPLE PREPARATION, ANALYSES AND SECURITY ...........................................62 11.1 SAMPLE PREPARATION AND SECURITY ......................................................62 11.2 ANALYSES ............................................................................................................63 11.2.1 WAI Laboratory/ X-Ray Minerals Laboratory ..........................................63 11.2.2 AGAT Laboratory ......................................................................................64 11.2.3 SGS Laboratory .........................................................................................65 12.0 DATA VERIFICATION ....................................................................................................66 12.1 SITE VISIT AND INDEPENDENT SAMPLING .................................................66 12.2 QUALITY ASSURANCE/QUALITY CONTROL PROGRAM ..........................68 12.2.1 2010 – 2011 (Batches SD01-47): WAI Prep / X-Ray Minerals Analysis .68 12.2.2 2012 (Pre-August) (Batches SD48-104): AGAT Lab ...............................69 12.2.3 2012 (Post-August) (Batches SD105-135): SGS Lab ................................70 12.3 CHECK ASSAYS ...................................................................................................71 12.4 DATA VERIFICATION RECOMMENDATIONS AND CONCLUSIONS ........72 13.0 MINERAL PROCESSING AND METALLURGICAL TESTING ..................................73 14.0 RESOURCE ESTIMATE ...................................................................................................74 14.1 SUMMARY ............................................................................................................74 14.2 SOURCE OF DATA...............................................................................................76
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