Feasibility Study and Technical Report - Pretivm

More documents

Recommendations

Info

5.0 ACCESSIBILITY, CLIMATE, LOCAL RESOURCES, INFRASTRUCTURE ANDPHYSIOGRAPHY ............................................................................................... 5-15.1 ACCESSIBILITY ....................................................................................................... 5-15.2 CLIMATE AND PHYSIOGRAPHY ................................................................................. 5-35.2.1 VEGETATION .......................................................................................... 5-35.3 INFRASTRUCTURE AND LOCAL RESOURCES ............................................................... 5-36.0 HISTORY .......................................................................................................... 6-16.1 WORK COMPLETED BY SILVER STANDARD ................................................................ 6-56.2 PREVIOUS FEASIBILITY STUDIES AT THE PROPERTY .................................................... 6-56.3 PRIOR MINERAL PRODUCTION................................................................................. 6-66.4 PRELIMINARY ECONOMIC ASSESSMENT 2010 ......................................................... 6-67.0 GEOLOGICAL SETTING AND MINERALIZATION ................................................ 7-17.1 REGIONAL GEOLOGICAL SETTING ............................................................................. 7-17.2 LOCAL GEOLOGY - SULPHURETS MINING CAMP......................................................... 7-57.2.1 STRATIGRAPHIC SETTING AND MAJOR MINERAL DEPOSITS ......................... 7-57.2.2 ALTERATION AND MINERALIZATION ........................................................... 7-67.2.3 STRUCTURAL SETTING AND METAMORPHISM ............................................ 7-77.3 PROPERTY GEOLOGY ............................................................................................ 7-117.3.1 LITHOLOGY AND STRATIGRAPHY ............................................................. 7-127.3.2 ALTERATION AND MINERALIZATION ......................................................... 7-177.3.3 STRUCTURE AND METAMORPHISM ......................................................... 7-327.3.4 GEOCHRONOLOGY ................................................................................ 7-368.0 DEPOSIT TYPES ............................................................................................... 8-19.0 EXPLORATION .................................................................................................. 9-110.0 DRILLING ....................................................................................................... 10-110.1 HISTORICAL DRILLING .......................................................................................... 10-110.2 SILVER STANDARD DRILLING ................................................................................ 10-110.3 PRETIVM DRILLING .............................................................................................. 10-211.0 SAMPLE PREPARATION, ANALYSES, AND SECURITY .................................... 11-111.1 SAMPLE PREPARATION BEFORE DISPATCH OF SAMPLES .......................................... 11-111.2 ANALYTICAL LABORATORY ..................................................................................... 11-211.2.1 METHOD ............................................................................................. 11-211.2.2 DENSITY DETERMINATIONS ................................................................... 11-211.3 QUALITY ASSURANCE AND QUALITY CONTROL ......................................................... 11-311.3.1 DATA – 2011 ..................................................................................... 11-311.3.2 DATA – 2012 ..................................................................................... 11-411.3.3 2012 QA/QC .................................................................................... 11-511.4 AUTHOR’S OPINION ON DATE SAMPLE PREPARATION, SECURITY AND ANALYTICALPROCEDURES ...................................................................................................... 11-612.0 DATA VERIFICATION ...................................................................................... 12-112.1 SITE VERIFICATION AND INDEPENDENT SAMPLING BY P&E ...................................... 12-1v1291990200-REP-R0012-02
12.2 DATA VERIFICATION BY SNOWDEN ......................................................................... 12-313.0 MINERAL PROCESSING AND METALLURICAL TESTING ................................ 13-113.1 INTRODUCTION .................................................................................................... 13-113.2 HISTORICAL TEST WORK ...................................................................................... 13-213.3 2009 TO 2013 TEST WORK ............................................................................... 13-313.3.1 SAMPLE DESCRIPTION .......................................................................... 13-313.3.2 2012 TO 2013 TEST SAMPLES ........................................................... 13-413.3.3 2010 TO 2011 TESTS SAMPLES ......................................................... 13-513.3.4 2009 TO 2010 TEST SAMPLES ........................................................... 13-713.3.5 SAMPLE HEAD ANALYSES ..................................................................... 13-713.3.6 ORE HARDNESS TEST WORK .............................................................. 13-1013.3.7 SAMPLE SPECIFIC GRAVITY ................................................................. 13-1113.3.8 FLOTATION TEST WORK ...................................................................... 13-1213.3.9 LOCKED CYCLE TEST (2012 AND 2013) ............................................ 13-4713.3.10 SOLIDS LIQUID SEPARATION TESTS WORK ............................................ 13-5013.3.11 CONCLUSIONS ................................................................................... 13-5313.3.12 RECOMMENDATIONS .......................................................................... 13-5313.4 METALLURGICAL PERFORMANCE PROJECTION ...................................................... 13-5314.0 MINERAL RESOURCE ESTIMATES ................................................................. 14-114.1 DISCLOSURE ....................................................................................................... 14-114.2 KNOWN ISSUES THAT MATERIALLY AFFECT MINERAL RESOURCES ............................ 14-114.3 ASSUMPTIONS, METHODS AND PARAMETERS ......................................................... 14-114.4 DATA PROVIDED .................................................................................................. 14-214.5 GEOLOGICAL INTERPRETATION AND MODELLING ..................................................... 14-314.5.1 VOK ................................................................................................... 14-314.5.2 WEST ZONE ........................................................................................ 14-414.5.3 DOMAINS USED FOR MODELLING .......................................................... 14-414.6 COMPOSITING OF ASSAY INTERVALS ...................................................................... 14-614.6.1 SUMMARY STATISTICS .......................................................................... 14-614.6.2 EXTREME VALUES – GOLD AND SILVER .................................................. 14-714.7 CONSIDERATION OF GRADE OUTLIERS AND ESTIMATION METHOD ............................. 14-714.8 VARIOGRAM ANALYSIS .......................................................................................... 14-914.8.1 HIGH-GRADE DOMAINS - LOW-GRADE POPULATION .................................. 14-914.8.2 HIGH GRADE DOMAINS - HIGH-GRADE POPULATION ............................... 14-1014.8.3 HIGH-GRADE DOMAINS - PROBABILITY .................................................. 14-1214.8.4 LOW-GRADE DOMAINS ........................................................................ 14-1214.8.5 DENSITY ........................................................................................... 14-1214.9 ESTABLISHMENT OF BLOCK MODELS ................................................................... 14-1314.10 GRADE INTERPOLATION PARAMETERS .................................................................. 14-1314.10.1 HIGH-GRADE DOMAINS - LOW-GRADE POPULATION ................................ 14-1314.10.2 HIGH-GRADE DOMAINS - HIGH-GRADE POPULATION ............................... 14-1414.10.3 HIGH-GRADE DOMAINS - PROBABILITY .................................................. 14-1514.10.4 LOW-GRADE DOMAINS ........................................................................ 14-1614.11 DENSITY ESTIMATION AND ASSIGNMENT .............................................................. 14-1614.12 PRIOR MINING .................................................................................................. 14-17vi1291990200-REP-R0012-02
Page 1 and 2: Report to:Pretium Resources Inc.Fea
Page 3: TABLE OF CONTENTS1.0 SUMMARY ......
Page 7 and 8: 16.7 MOBILE EQUIPMENT REQUIREMENTS
Page 9 and 10: 20.1 SUSTAINABILITY AND ENVIRONMENT
Page 11 and 12: 26.4.2 HYDROGEOLOGICAL RECOMMENDATI
Page 13 and 14: Table 13.23 Occurrences of Gold in
Page 15 and 16: LIST OF FIGURESFigure 1.1 Simplifie
Page 17 and 18: Figure 16.11 Extent of Mine Develop
Page 19 and 20: hertz .............................
Page 21 and 22: atomic emission spectroscopy ......
Page 23 and 24: Mineable Shape Optimizer ..........
Page 25 and 26: VOK Domain 2 ......................
Page 27 and 28: 1.2 PROPERTY DESCRIPTION AND LOCATI
Page 29 and 30: 1.4 MINERAL RESOURCE ESTIMATESSnowd
Page 31 and 32: Table 1.2West Zone Mineral Resource
Page 33 and 34: Figure 1.1Simplified Process Flowsh
Page 35 and 36: 1.7 MINING METHODSThe underground m
Page 37 and 38: Figure 1.2Overall Site LayoutE 4300
Page 39 and 40: Figure 1.4Knipple Transfer Station
Page 41 and 42: outflow. This approachdischarge thr
Page 43 and 44: summary of the overall operating co
Page 45 and 46: The Project schedule identifies the
Page 47 and 48: 2.1 QUALIFIED PERSONSThe qualified
Page 49 and 50: Report Section Company QP23.0 Adjac
Page 51 and 52: 4.0 PROPERTY DESCRIPTION AND LOCATI
Page 53 and 54: 4.3 STATUS OF MINING TITLESThe Prop
Page 55 and 56:
Figure 4.3Pretivm Mineral ClaimsSou
Page 57 and 58:
5.0 ACCESSIBILITY, CLIMATE, LOCALRE
Page 59 and 60:
5.2 CLIMATE AND PHYSIOGRAPHYThe cli
Page 61 and 62:
6.0 HISTORYInformation in this sect
Page 63 and 64:
Figure 6.1West Zone Underground Vei
Page 65 and 66:
6.1 WORK COMPLETED BY SILVER STANDA
Page 67 and 68:
7.0 GEOLOGICAL SETTING ANDMINERALIZ
Page 69 and 70:
Figure 7.1Tectonic Setting of the B
Page 71 and 72:
7.2 LOCAL GEOLOGY - SULPHURETS MINI
Page 73 and 74:
Altered Stuhini Group rocks and Mit
Page 75 and 76:
Figure 7.4Sulphurets Mining Camp Ge
Page 77 and 78:
y the Brucejack Fault as well as by
Page 79 and 80:
Previously, some of the rocks strad
Page 81 and 82:
Figure 7.6Brucejack Property Geolog
Page 83 and 84:
Figure 7.6 (con’t)Brucejack Prope
Page 85 and 86:
more distal (i.e. down temperature)
Page 87 and 88:
more heavily altered than those abo
Page 89 and 90:
Figure 7.8Brucejack Property Minera
Page 91 and 92:
Figure 7.10South-north Cross-sectio
Page 93 and 94:
WEST ZONEThe West Zone gold-silver
Page 95 and 96:
Figure 7.12VOK to West Zone Geologi
Page 97 and 98:
Figure 7.14West Zone Drillholes and
Page 99 and 100:
steep, is generally associated with
Page 101 and 102:
Figure 7.15Trace Element Analysis b
Page 103 and 104:
for which an age of c.110 Ma has be
Page 105 and 106:
Figure 8.1Brucejack Deposit Mineral
Page 107 and 108:
Figure 9.13D Geophysical Model Sche
Page 109 and 110:
10.0 DRILLINGInformation in this se
Page 111 and 112:
Figure 10.1Core in Wooden Core Boxe
Page 113 and 114:
Figure 10.3Brucejack Property Diamo
Page 115 and 116:
The cut PQ samples weighed approxim
Page 117 and 118:
submitted to ALS. In addition, a re
Page 119 and 120:
Primary sample gold concentrations
Page 121 and 122:
12.0 DATA VERIFICATIONIndependent s
Page 123 and 124:
12.2 DATA VERIFICATION BY SNOWDENSn
Page 125 and 126:
Figure 12.4Sample Verification Resu
Page 127 and 128:
Year Program ID Laboratory ** Gravi
Page 129 and 130:
13.3.2 2012 TO 2013 TEST SAMPLESIns
Page 131 and 132:
Table 13.7 Conceptual Master Compos
Page 133 and 134:
ALSInspectorateFire Assay (g/t) Met
Page 135 and 136:
13.3.6 ORE HARDNESS TEST WORKTable
Page 137 and 138:
Table 13.14 Sample Specific Gravity
Page 139 and 140:
In general, there was a reduction i
Page 141 and 142:
Figure 13.5 Effect of Primary Grind
Page 143 and 144:
In 2012 and 2013, most of the flota
Page 145 and 146:
Further cleaner tests were conducte
Page 147 and 148:
Figure 13.14 Effect of Cleaner Flot
Page 149 and 150:
SampleIDWZ-2CompositeCompositeBJ-AC
Page 151 and 152:
The 2012 and 2013 tests routinely i
Page 153 and 154:
Figure 13.17Cumulative Stage GRG ve
Page 158 and 159:
Figure 13.21 Silver Cyanide Extract
Page 160 and 161:
Table 13.24 Head Sample Cyanidation
Page 162 and 163:
Based on the findings of the prelim
Page 164 and 165:
Primary Grind/Regrind SizesConcentr
Page 166 and 167:
Further cyanide leach tests were ca
Page 168 and 169:
including samples with low head gra
Page 170 and 171:
Grade (g/t) Recovery/Extraction (%)
Page 172 and 173:
Figure 13.28 Variability Test Resul
Page 174 and 175:
Table 13.31Locked Cycle Tests Resul
Page 176 and 177:
Table 13.33Conventional Thickening
Page 178 and 179:
13.3.11 CONCLUSIONSA review of prel
Page 180 and 181:
Table 13.37Head Grade(g/t)Metallurg
Page 182 and 183:
• geological interpretation and m
Page 184 and 185:
to form a series of seemingly strat
Page 186 and 187:
14.6 COMPOSITING OF ASSAY INTERVALS
Page 188 and 189:
In the high-grade domains (includin
Page 190 and 191:
Table 14.3Parameters to Describe Go
Page 192 and 193:
14.8.3 HIGH-GRADE DOMAINS - PROBABI
Page 194 and 195:
analysis. Any target blocks that re
Page 196 and 197:
For VOK and West Zone the interpola
Page 198 and 199:
Table 14.9Comparison of the Mean Co
Page 200 and 201:
the economic viability of the depos
Page 202 and 203:
14.15 RESOURCE REPORTINGThe mineral
Page 204 and 205:
15.0 MINERAL RESERVE ESTIMATES15.1
Page 206 and 207:
Table 15.1Net Smelter Return Parame
Page 208 and 209:
15.4 MINING SHAPESAMC used the Mine
Page 210 and 211:
Strike length varies considerably w
Page 212 and 213:
15.7 MINERAL RESERVESMineral reserv
Page 214 and 215:
Figure 15.4Reserve Shapes and Minin
Page 216 and 217:
16.2 MINE DESIGN16.2.1 ACCESS AND R
Page 218 and 219:
Figure 16.2Brucejack Twin Declines
Page 220 and 221:
Figure 16.4Typical Level Plan - 1,2
Page 222 and 223:
Table 16.1Development Design Parame
Page 224 and 225:
Figure 16.7Mineable Stope Shapes -
Page 226 and 227:
Once the stope footprint is slashed
Page 228 and 229:
16.3.3 STOPE SEQUENCEThe mining seq
Page 230 and 231:
Stopes that will not be re-exposed
Page 232 and 233:
Table 16.5LOM Backfilling - Waste R
Page 234 and 235:
Figure 16.11Extent of Mine Developm
Page 236 and 237:
• development of the 1,210 and 1,
Page 238 and 239:
Figure 16.13Life of Mine Production
Page 240 and 241:
Table 16.7LOM Tonnes and GradesYear
Page 242 and 243:
Table 16.8Rock Mass PropertiesUnitU
Page 244 and 245:
AMC estimated ore recovery in the w
Page 246 and 247:
FULL-WIDTH UNDERCUTSThe Project min
Page 248 and 249:
Table 16.10Mine Infrastructure Exca
Page 251 and 252:
with lesser components supplied by
Page 253 and 254:
un was completed representing glaci
Page 255 and 256:
Table 16.12Underground Development
Page 257 and 258:
TRANSMIXERSShotcrete will be delive
Page 259 and 260:
The VOK Zone and West Zone mining a
Page 261 and 262:
Figure 16.17 shows a ventilation co
Page 263 and 264:
• regular inspection of the conve
Page 265 and 266:
On low-head applications, a submers
Page 267 and 268:
Figure 16.18Dewatering PlanPretium
Page 269 and 270:
Figure 16.20CrusherThe 42 in wide b
Page 271 and 272:
16.9.3 POWER REQUIREMENTS AND ELECT
Page 273 and 274:
Electrical power will be supplied t
Page 275 and 276:
To supply service water to the high
Page 277 and 278:
16.9.7 WORKSHOP AND STORESThe maint
Page 279 and 280:
Radio communications will be establ
Page 281 and 282:
16.9.11 PORTAL STRUCTUREA portal st
Page 283 and 284:
propane consumption. Table 16.18 sh
Page 285 and 286:
16.10 PASTE FILL DISTRIBUTIONP&C co
Page 287 and 288:
Figure 16.33Paste Fill Distribution
Page 289 and 290:
Figure 16.35Pre-production Paste Fi
Page 291 and 292:
RoleHeadCountMaintenance (72)Mainte
Page 293 and 294:
17.0 RECOVERY METHODS17.1 MINERAL P
Page 295 and 296:
The process plant will consist of t
Page 297 and 298:
17.1.4 PLANT DESIGNMAJOR DESIGN CRI
Page 299 and 300:
• a belt conveyor, 914 mm wide by
Page 301 and 302:
CONCENTRATE REGRINDINGThe flotation
Page 303 and 304:
The dried tabling concentrate will
Page 305 and 306:
solution strength. The solution wil
Page 307 and 308:
PROCESS CONTROL AND INSTRUMENTATION
Page 309 and 310:
• vendors’ instrumentation pack
Page 311 and 312:
18.0 PROJECT INFRASTRUCTURE18.1 OVE
Page 313 and 314:
Figure 18.1Brucejack Overall Site L
Page 315 and 316:
18.2 GEOTECHNICAL18.2.1 OVERVIEWThe
Page 317 and 318:
18.3 ACCESS18.3.1 ACCESS ROADSThe B
Page 319 and 320:
Figure 18.3Knipple Glacier Access R
Page 321 and 322:
available in the winter and also pr
Page 323 and 324:
18.5 GRADING AND DRAINAGEThe site w
Page 325 and 326:
AVALANCHE FREQUENCYAvalanche freque
Page 327 and 328:
• portal fuel storage• conveyor
Page 329 and 330:
Operations CampSize 2 avalanches fr
Page 331 and 332:
Figure 18.5Access Road Avalanche Ha
Page 333 and 334:
and dated June 2013. As requested b
Page 335 and 336:
Figure 18.7Photo of Typical Slopes
Page 337 and 338:
• the design of special towers to
Page 339 and 340:
modular construction where possible
Page 341 and 342:
collect waste water during maintena
Page 343 and 344:
water treatment plant to increase t
Page 345 and 346:
Air/vacuum valves will be installed
Page 347 and 348:
Figure 18.10Foot Print of 3% Deposi
Page 349 and 350:
A pre-manufactured trailer will be
Page 351 and 352:
• fuel storage• vendors’ inst
Page 353 and 354:
18.17 OFF-SITE INFRASTRUCTURE18.17.
Page 355 and 356:
18.17.3 BOWSER AIRSTRIPRegular char
Page 357 and 358:
INSTRUMENT APPROACH PROCEDURESAn IA
Page 359 and 360:
AERODROME PERSONNEL AND MAINTENANCE
Page 361 and 362:
TRANSPORT MODE OPTIONSTruckThere ar
Page 363 and 364:
SBT has the ability to mobilize cra
Page 365 and 366:
Pretivm is committed to a process t
Page 367 and 368:
engage with the Nisga’a Lisims Go
Page 369 and 370:
Average monthly temperature data us
Page 371 and 372:
The fisheries resources and fish ha
Page 373 and 374:
was conducted on the NPR values of
Page 375 and 376:
all modelling exercises, the accura
Page 377 and 378:
16 corridor is recovering from the
Page 379 and 380:
• reporting and feedback mechanis
Page 381 and 382:
Approximately 47% of the tailings w
Page 383 and 384:
20.1.8 WASTE MANAGEMENTMine WastesP
Page 385 and 386:
from the site. Fixed equipment, suc
Page 387 and 388:
• Forest Act (BC)• Forest and R
Page 389 and 390:
Table 20.5List of Federal Approvals
Page 391 and 392:
21.1.2 ESTIMATE BASE DATE AND VALID
Page 393 and 394:
…costs not directly attributable
Page 395 and 396:
• small tools• consumables• c
Page 397 and 398:
The total cost for Major Area 33 -
Page 399 and 400:
The unit cost estimates are based o
Page 401 and 402:
MINE OPERATING COSTSThe total under
Page 403 and 404:
Table 21.7Summary of Process Operat
Page 405 and 406:
Table 21.8Summary of Backfilling Op
Page 407 and 408:
DescriptionLabourForceTotal Cost($/
Page 409 and 410:
22.0 ECONOMIC ANALYSIS22.1 INTRODUC
Page 411 and 412:
Figure 22.1Pre-tax Cash FlowCumulat
Page 413 and 414:
transport the concentrate to a buil
Page 415 and 416:
Figure 22.4Pre-tax Payback Period S
Page 417 and 418:
Canadian development expense and 60
Page 419 and 420:
23.0 ADJACENT PROPERTIESSnowden not
Page 421 and 422:
23.2 HIGH PROPERTYThe Teuton Resour
Page 423 and 424:
managers, and the mining manager, a
Page 425 and 426:
MANAGEMENT PROCEDURESThe EPCM contr
Page 427 and 428:
Figure 24.2Level 1 Execution Schedu
Page 429 and 430:
Capital equipment purchases will be
Page 431 and 432:
Construction work will be split int
Page 433 and 434:
provided with dedicated emergency p
Page 435 and 436:
econciliation to the freight consol
Page 437 and 438:
PROJECT TEAM RESPONSIBILITIESIt is
Page 439 and 440:
WBS Area PretivmEPCMTeamUnderground
Page 441 and 442:
24.1.15 RISK MANAGEMENTA Risk Asses
Page 443 and 444:
There may be opportunities to optim
Page 445 and 446:
The conceptual layout is preliminar
Page 447 and 448:
25.4.8 TAILINGS DELIVERY SYSTEMThe
Page 449 and 450:
26.0 RECOMENDATIONS26.1 GEOLOGYThe
Page 451 and 452:
• Further test work to identify t
Page 453 and 454:
The estimated cost for the above-me
Page 455 and 456:
• Careful planning as well as det
Page 457 and 458:
26.5.6 BRUCEJACK OUTLET CONTROL STR
Page 459 and 460:
• Further groundwater quality and
Page 461 and 462:
27.0 REFERENCES27.1 AVALANCHE HAZAR
Page 463 and 464:
Price, W. (2005). Mend Report 9.1c:
Page 465 and 466:
Britton, J. M. and Alldrick, D. J.,
Page 467 and 468:
Olssen. L., Jones, I.. 2012b. Preti
Page 469 and 470:
28.0 CERTIFICATES OF QUALIFIED PERS
Page 471 and 472:
28.2 IVOR W.O. JONES, M.SC., CP, FA
Page 473 and 474:
28.3 JOHN HUANG, PH.D., P.ENG.I, Ji
Page 475 and 476:
28.5 HAMISH WEATHERLY, M.SC., P.GEO
Page 477 and 478:
28.7 SABRY ABDEL HAFEZ, PH.D., P.EN
Page 479 and 480:
28.9 CATHERINE SCHMID, M.SC., P.ENG
Page 481 and 482:
28.11 BRENT MCAFEE, P.ENG.I, Brent
Page 483 and 484:
28.13 MICHAEL CHIN, P.ENG.I, Michae
Page 485 and 486:
28.15 MICHAEL PAUL WISE, P.ENG., MB
Page 487 and 488:
28.17 CLAYTON RICHARDS, P.ENG.I, Cl
Page 489 and 490:
28.19 ALI FARAH, P.ENG.I, Ali Farah
Page 491 and 492:
28.21 S. (KUMAR) SRISKANDAKUMAR, M.
show all

Feasibility Study and Technical Report - Pretivm

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?