Wellgreen Project Preliminary Economic Assessment ... - OTCIQ.com

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The feed to the secondary cleaner consists of the primary rougher concentrate and the primary cleaner concentrate. The secondary cleaner concentrate is the final concentrate that will be pumped to the concentrate thickener. The overflow from the concentrate thickener will be recycled as process water where needed. The underflow from the concentrate thickener will be pumped to a concentrate holding tank. The final concentrate will be pressure filtered and loaded out for sale and/or toll smelting. Load out will be done by conveyor directly into 50 t trucks. The secondary cleaner tail will be sent for magnetic separation prior to being fed to the primary cleaner. The primary cleaner feed consists of the secondary cleaner tail, the secondary rougher concentrate, and the scavenger concentrate. The primary cleaner feed will be subjected to a high-intensity magnetic separator which will be used to remove the magnetic pyrrhotite present in the primary cleaner feed. The magnetic pyrrhotite, if not separated out, would float with the valuable platinum, palladium, nickel and copper sulphide minerals and lower the grade of the subsequent concentrate. The magnetic material pulled off by the magnetic separator will be conveyed to the tailings thickener for disposal in the tailings impoundment. The non-magnetic material will be pumped as feed to the primary cleaner. The primary cleaner tail is subject to tertiary grinding in a vertimill. The product from the vertimill is 80% passing 45 µm. This becomes the feed to the scavenger along with the secondary rougher tail. The scavenger tail is the final tail which is thickened and disposed of in the TMF. The overflow from the tailings thickener will become process water where needed and the underflow will be pumped to the TMF. As mentioned previously, the primary rougher tail is pumped to a ball mill for secondary grinding. The ball mill is in closed circuit with a hydrocyclone cluster. The underflow from the hydrocyclones will be oversize material recycled back to the ball mill. The overflow will be the 80% passing 75 µm which will be pumped to the secondary rougher as flotation feed. Pyrrhotite depression will be used in the secondary rougher to try and create a high grade concentrate. The MF2 circuit has been used successfully in South African platinum mines (e.g. UG2 mineralized material) to generate PGE concentrates. Although developed primarily for UG2 mineralized material, the MF2 configuration offers certain advantages such as prevention of over-grinding and slimes generation, increased rejection of talc, chlorite and pyrrhotite and early recovery of PGM. The gradual size reduction will ensure that the quick floating valuable sulphide minerals are obtained in the primary rougher, and the secondary and tertiary stages of grinding should liberate the locked valuable minerals to be floated in later stage concentrates. Pyrrhotite depression and magnetic separation will be employed to remove some of the pyrrhotite and try to optimize the final concentrate grade. This is the proposed ciruit based on the available test work, however the final circuit configuration remains to be determined. Prophecy Platinum Corp. 17-3 1193460500-REP-R0001-02 Wellgreen Project Preliminary Economic Assessment, Yukon, Canada
17.2 P ROCESS D ESIGN C RITERIA The design criteria have been based on the previous laboratory work completed by Lakefield (et al.), G&T and the latest program at SGS (refer to Appendix C for SGS’s report). The key items have been listed in Table 17.1. Table 17.1 Process Design Criteria Criteria Measurement Throughput Mill Availability 95% Operating Days 350 Annual Throughput 11,200,000 t/a Daily Throughput 32,000 t/d Hourly Throughput 1,334 t/h Hourly Throughput per Train 667 t/h Feed Grade, Ni 0.32% Feed Grade, Cu 0.26% Feed Grade, Co 0.02% Feed Grade, Pt 0.41 g/t Feed Grade, Pd 0.35 g/t Feed Grade, Au 0.18 g/t Mineralized Material SG 3.22 t/m 3 Grind Abrasion Index (Ai) 0.088 SAG Recirculating Load 15% SAG Feed Size -340 mm SAG Transfer Size, T80 1,000 µm Ball Mill Work Index (BWi) 19.7 kWh/t Ball Mill Product Size, P80 74 µm Ball Mill Recirculating Load 250% Vertimill Product Size Float 45 µm Collector SIPX Frother MIBC Modifier CMC Note: SIPX = sodium isopropyl xanthate; MIBC = methyl isobutyl carbinol; CMC = carboxymethyl cellulose Prophecy Platinum Corp. 17-4 1193460500-REP-R0001-02 Wellgreen Project Preliminary Economic Assessment, Yukon, Canada
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Report to: Wellgreen Project Prelim
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TABLE OF CONTENTS 1.0 SUMMARY .....
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14.1.8 MINERAL RESOURCE TABULATION
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26.1.2 PHASE 2 - QUILL CREEK ULTRAM
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Table 19.2 Palladium Demand and Sup
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Figure 19.3 London Metals Exchange
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litres per minute .................
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International All-North Resources L
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1.0 S UMMARY 1.1 I NTRODUCTION Tetr
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This PEA has been prepared by Tetra
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Numerous operators have worked on t
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1.6 M INING M ETHODS The Project is
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Figure 1.2 Wellgreen Project Overal
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Table 1.6 Capital Cost Summary (US$
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The following financial results wer
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Figure 1.3 illustrates that the Pro
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Figure 1.5 Project Execution Plan P
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2.0 INTRODUCTION Tetra Tech was com
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3.0 RELIANCE ON OTHER EXPERTS Tetra
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Figure 4.1 Location Map Prophecy Pl
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All work undertaken on the surface
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Figure 4.3 Wellgreen Surface Lease
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Other than those liabilities set fo
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5.3 C LIMATE The climate is alpine,
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Year Company Activities 1970 Hudson
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Year Company Activities 2008 Corona
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6.2.3 NORTHERN P LATINUM 2009 PROGR
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Figure 7.1 Regional Geology Map Pro
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Figure 7.3 Property Geology Prophec
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Longitudinal faults and/or shears a
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Figure 7.4 Wellgreen Plan View Prop
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7.2.3 NORTH ZONE The North Zone is
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Table 7.3 PGE-Bearing Minerals in t
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Gabbroid-associated Nickel, Copper,
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10.0 DRILLING 10.1 H ISTORICAL D RI
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Figure 10.1 Prophecy Platinum Drill
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Table 10.4 Prophecy Platinum 2011 D
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• The course rejects returned fro
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Figure 10.4 Core Storage Facility P
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11.0 SAMPLE PREPARATION, ANALYSES,
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12.0 DATA VERIFICATION Tetra Tech
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Table 12.2 Check Assays Prophecy Pl
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13.0 MINERAL PROCESSING AND METALLU
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An elemental analysis of typical co
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Minerals Peridotite Composite 1 Min
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Ni Deposits” shows that the grade
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13.3 SGS V ANCOUVER - J UNE 2012 A
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14.0 MINERAL RESOURCE ESTIMATES 14.
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Table 14.3 summarizes the grade cap
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The NiEq value was assigned to all
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Page 103 and 104: Table 14.9 Estimation Criteria Zone
Page 105 and 106: Table 14.10 Search Parameters Zone
Page 107 and 108: NiEq Cut-off Tonnes NiEq (%) Ni (%)
Page 109 and 110: Figure 14.2 Wellgreen Platinum, Pal
Page 111 and 112: Figure 14.4 Wellgreen Platinum, Pal
Page 113 and 114: Figure 14.6 Wellgreen Pit Resource
Page 115 and 116: 14.1.9 VALIDATION The Wellgreen mod
Page 117 and 118: Figure 14.9 East Zone Cross Section
Page 119 and 120: Figure 14.10 Wellgreen Nickel Secti
Page 121 and 122: Figure 14.14 Wellgreen Platinum Sec
Page 123 and 124: Figure 14.18 Wellgreen Cobalt Eleva
Page 125 and 126: 14.2 P REVIOUS E STIMATES Table 14.
Page 127 and 128: 15.0 MINERAL RESERVE ESTIMATES A mi
Page 129 and 130: The selected base case pit contains
Page 131 and 132: OVERALL O PEN P IT SLOPE ANGLE Tetr
Page 133 and 134: Table 16.4 Pit Optimization Results
Page 135 and 136: The pit optimization process includ
Page 137 and 138: 16.4 P RODUCTION S CHDULE Using Pit
Page 139 and 140: Year Waste (t) Total (t) Strip Rati
Page 141 and 142: Figure 16.5 Sequence of Development
Page 143 and 144: PHASE III During Phase III, the pit
Page 145 and 146: 16.5.4 EXPLOSIVES A contractor will
Page 147 and 148: Table 16.9 Pit Design Criteria Item
Page 149 and 150: Equipment Fleet Size Units Crew Bus
Page 151: Figure 17.1 Overall Wellgreen Proce
Page 155 and 156: 17.5 P ROCESS P LANT The process pl
Page 157 and 158: Figure 18.1 Wellgreen Project Overa
Page 159 and 160: ultimate impoundment surface area o
Page 161 and 162: Table 19.2 Palladium Demand and Sup
Page 163 and 164: Figure 19.3 London Metals Exchange
Page 165 and 166: Figure 19.5 Nickel Demand (2009 to
Page 167 and 168: 20.0 ENVIRONMENTAL STUDIES, PERMITT
Page 169 and 170: Tailings and mill concentrate sampl
Page 171 and 172: 20.2.4 AQUATIC RESOURCES The Proper
Page 173 and 174: Figure 20.2 Wildlife Ranges-Woodlan
Page 175 and 176: Figure 20.4 Wildlife Ranges-Mountai
Page 177 and 178: Figure 20.6 Wildlife Ranges-Grizzly
Page 179 and 180: Figure 20.8 Aquatic Resources Proph
Page 181 and 182: 20.3.2 LICENSING The Project will b
Page 183 and 184: (Transport Canada 2010). New constr
Page 185 and 186: Table 20.1 Applicable Legislation,
Page 187 and 188: 20.4 M I NE C LOSURE AND R ECLAMATI
Page 189 and 190: Umbrella Final Agreement, the White
Page 191 and 192: 20.5.2 NON-ABORIGINAL COMMUNITIES T
Page 193 and 194: 21.0 C APITAL AND O PERATING C OSTS
Page 195 and 196: Mine Equipment 21.2.2 SUSTAINING 20
Page 197 and 198: Table 21.7 Contingency (US$ million
Page 199 and 200: • mobilization and demobilization
Page 201 and 202: Spares • safety including safety
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21.3 O PERATING C OSTS 21.3.1 GENER
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Table 21.11 Summary of Mining Opera
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Mine Operations Position No. Annual
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22.0 ECONOMIC A NALYSIS 22.1 I NTRO
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Table 22.3 Metal Production from th
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Table 22.4 Summary of Pre-tax Finan
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22.4 M ETAL P RICE S CENARIOS The L
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Figure 22.3 IRR Sensitivity Analysi
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Figure 23.1 Adjacent Properties Pro
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Figure 24.1 Wellgreen Project Execu
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25.2 M INING Table 25.1 Wellgreen R
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Table 25.4 Process Capital Cost Sum
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Table 26.1 Wellgreen Expansion Budg
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26.2 M INING sample selection shoul
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Trade-off studies should be complet
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• develop a negotiation strategy
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METALLURGY Davis, David and Bruwer,
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Yukon Environmental and Socio-econo
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TODD MCCRACKEN, P.GEO. I, Todd McCr
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PHILIP BRIDSON, P.ENG. I, Philip Br
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APPENDIX A L IST OF C LAIMS
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District GrantNumber RegType ClaimN
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Certificate of Analysis First issue
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Hf µg/g 0.5 4 / 20 Ho µg/g 0.2 3
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assess laboratory results, users ar
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Constituent Unit Mean Table 2 - Pro
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Table 3 - Informational Values Cons
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CERTIFYING OFFICER ________________
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An Investigation into METALLURGICAL
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Prophecy Platinum Corporation - Wel
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Sample Fraction Mass Size Distribut
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Mass (% Chalcopyrite) Prophecy Plat
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Mass (% Pentlandite) Prophecy Plati
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Mass (% Pyrrhotite) Prophecy Platin
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Pyrrhotite Recovery % Prophecy Plat
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Cu Rec, % Ni Rec, % Gng Rec, % 100
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Grade (%) Cu + Ni Grade (g/t) PGE G
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Prophecy, Wellgreen samples 50149-0
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OnLine LIMS SGS Lakefield Research
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Certificate of Analysis Work Order:
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Final : VC120756 Revision REVISED O
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Final : VC120590A Revision REVISED
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SGS Minerals Services Standard Bond
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Project No.: 50149-001 Test No.: MC
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SGS Minerals Services STANDARD BOND
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SGS Minerals Services Project No. D
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Test No.: F1 Project No.: 50149-001
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Test No.: Sep-F1 Project No.: 50149
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Test: F30 Project: 11603-005 50149-
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Test: F32 Project: 11603-005 50149-
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Test: F34 Project: 11603-005 50149-
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Test: F36 Project: 11603-005 50149-
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Test: F38 Project: 11603-005 50149-
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Test No.: HNI-F1 Project No.: 50149
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Test: HNI-F3 Project: 11603-005 501
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Test: HNI-F5 Project: 11603-005 501
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Test: LCT-1 Project: 50149-001 Date
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Test: LCT-1 Overall Stability Total
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Test: LCT-2 Metallurgical Predictio
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Test: LCT-4 Project: 50149-001 Date
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Test: LCT-4 Overall Stability Total
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Prophecy Platinum Corp 50149-101 MI
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Mineral Abundance (wt.%) 100 90 80
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CAVM-50149-101 MI7018-MAR12 Sample
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CAVM-50149-101 MI7018-MAR12 Sample
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erra Mineralogical Services Inc. Mi
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TerraMS-12JUL-001 Wellgreen - Pt-Pd
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APPENDIX D M INING
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LG Phase Revenue Factor (%) Mineral
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Figure 3 Overall Ultimate Pit Produ
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Table 3 Penetration and Drilling Ra
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HAULAGE General Hauling Conditions
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Year Mechanical Availability (%) Us
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