August 28 2013 Final Technical Presentation updated
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Transcript of August 28 2013 Final Technical Presentation updated
Spain Corcoesto Gold Project
Galicia - Spain
1. INTRODUCTION, LOCATION, HISTORY
2. GEOLOGY AND RESOURCES
3. FEASIBILITY AND MINE PLAN
Spain Corcoesto Gold Project
INTRODUCTION, LOCATION, HISTORY
Spain Corcoesto Gold Project
Spain Corcoesto Gold Project
Claim Status
Project Office
Mineral Right Type Number Granted ExpiringSurface
(Ha)
Emilita Exploitation Concession 1221 May-18-1912 Ago-10-2064 270,5
Ciudad de Masma Exploitation Concession 1455 June-16-1926 Ago-10-2064 305,5
Ciudad de Landró Exploitation Concession 1454 June-16-1926 Ago-10-2064 197,6
EDW applied for addtional ground along the gold belt (more than 15,000 Hectares)
Legend
Corcoesto Exploitation Concessions. (Granted)
Investigation Permits & Exploitation Concession pending of resolution.
(Public Tender)
Investigation Permits pending of granting.
Spain Corcoesto Gold Project
Adjacent properties
Corcoesto 1.5 Moz/GoldNI 43-101
Support for Project Development at Local and Regional Levels
Regional Government promoting Mining Industry in Galicia (www.mineriadegalicia.com)
Mining Title confirmed for period of 90 years since August, 1974 (up to August, 2064)
EDW and drilling companies employing local people
Company sponsoring local celebration at Corcoesto and other events.
Support for Project development from the local community
RECENT POLL (August, 2012)
80% OF NEIGHBOURING MUNICIPALITIES IN FAVOUR OF MINING PROJECT
Spain Corcoesto Gold Project
Government and Community support
WE
Spain Corcoesto Gold Project
Communication and PR. (Guindeira Communication & Events)
Communication Strategy based on:
Transparency
Engagement with Local Community ,
Highest level of environmental standards
EDW has made presentations to:
Local and Galician Government
Local Political Groups
Main Environmental Galician Group
Corcoesto Local Community
EDW has also contacted:
Local Social-Economic Associations
Local Press and Journalists
Galician University experts
Environmental groups
Conclusions:
Excellent reception from all groups to the companies transparency
Excellent Reception to the Mining Project
WE
Mayor’s winning campaign included support of CorcoestoMining Project:
Local Municipality will assist and support with advancing the project to construction and production.
> 250 new direct jobs estimated for
Life-of-Mine (9.9 years)
plus 500+ jobs during construction
Associated spin-off jobs projected
to be 3-4x the number of direct jobs
Hundreds of people waited several hours in line to deliver their resumes to work at the Corcoesto Gold Project, which opened an office in Coristanco (March)
Spain Corcoesto Gold Project
Municipal Support to the Mining Project
Country Manager: Lluís Boixet, (Senior Geologist)
Director Corporate Affairs: Francisco Arechaga
Mining Engineers: Fernando Diaz
& Francisco Bellón
Environment Department: Francisco Ruiz
Legal Counsel: Julio Cesar Valle
Project Geologist: Carmen Sorribas
Exploration Geologist: David Rodriguez
Senior Logistics assistant: Amancio López
Prep. Lab. Manager: Jesús Antonio López
GIS Department: Pedro Cuervo
Local Accountant: Ana Suárez
Spain Corcoesto Gold Project
Key Project Personnel
Spain Corcoesto Gold Project
Management
John ThomasChief Operating Officer
Over 40 years in mining industry world wide.
Managed similar sized open pit gold projects
including; Bolivar GoldFields and Bolivar Gold Corp.
projects
Greg SmithVice President ExplorationOver 25 years in exploration and development of gold
projects in all stages of development. Previously
involved develop and production assets
Lluís BoixetCountry Manager
Over 25 years in exploration and development of gold
and base metal projects in the Iberian Peninsula
Fernando Díaz RiopaCorcoesto operation managerOver 20 years in development, operation and closure of gold and base metal projects in Spain, Africa and Central America
Francisco Ruiz Senior Environmental Manager
Over 15 years experience in gold projects &
operations in NW Spain.
Julio Cesar ValleLawyer, (Counsel)Over 20 years experience in mining Galicia and Spain
George SalamisPresident, Chief Executive Officer
+20 years experience in the mining business directing
exploration, development, and mining operations. Mr.
Salamis has held senior management positions with
Placer Dome and Cameco and has completed M&A
transactions valued over $1B
Francisco ArechagaDirector of Corporate Affairs
Mining Engineering with over 30 years in the Galician
Mining Industry. Previously Mr. Arechaga held the
position of Chief Director of the Mina de Puentes, the
largest open pit mine in Galicia
Shallow pits from the Roman Times.
Between 1895 and 1910: Shallow UG exploitation by the British company “Sagasta Gold Mines Ltd”.
Several Companies did exploration between 1918 and 1987.
1997-2004 (RNGM): Soil Geochemistry, 18,000m of Trenching and 19,250m of Drilling. Feas. Study for Heap Leach Operation.
2005-2010 (KNB): Soil Geochemistry, Mag Survey, 1,100m of Trenching and 8,710m of drilling.
Spain Corcoesto Gold Project
Project History
Oct, 2010 – Feb, 2013 (EDW): Step-out and in-fill drilling 52,940m Feasibility Study and remaining mine permitting in progress.
KNB Detailed Survey (Au + 35 elements). Lines spacing at 75m and samples at 25m.
Spain Corcoesto Gold Project
Au (ppb)
0 - 228.8
228.8 - 378378 - 609.45
609.45 - 1,021.41,021.4 - 1,316.9
1,316.9 - 2,659.69
2,659.69 - 5,360
0 - 643.6
643.6 - 851
851 - 1,190
1,190 - 1,627.6
1,627.6 - 2,276.9
2,276.9 - 3,724.19
3,724.19 - 4,090
As (ppm)
Au and As anomalies oriented N70E, cross cutting regional geology (N30E).
Soil Geochemistry (Au and As)
Corcoesto Map, Showing
lithologies and gold vein
systems:
Principal zones:
Cova Crea, Pozo del Ingles,
Petón de Lobo
Additional structures:
Montefurado, Fonterremula,
Picotos and Lampreira.
Lithology
Leucocratic gneiss
Schists
Alternating gneiss/
metasediments/migmatites
Felsitic dyke
Gold vein sytems
Inferred contact
Local Geology
Spain Corcoesto Gold Project
Property Geology
Office
GEOLOGY AND RESOURCES
Spain Corcoesto Gold Project
Main Gold Deposits in the Iberian Peninsula
Jales/Gralheira 1.2 M Oz
Corcoesto 1.5 M Oz
Las Médulas
Penedono
Salave 2 M Oz
El Valle-Boinás-Carlés 3 M Oz
Rodalquilar
Cerro Colorado 3 M OzFilon Sur
Castromil
Montemor
Corcoesto Gold Deposit is 100% owned by EdgewaterExploration Ltd., since 2010.
Location: Galicia, NW Spain.
Spain Corcoesto Gold Project
Major Gold Deposits
1
2
3
4
5
6
1. Cantabrian Zone
2. West-Asturian-Leonese Zone
3. Central Iberian Zone
4. Galician-Tras-Os-Montes Zone
5. Ossa Morena Zone
6. South-Portuguese Zone
Iberian Hercynian Massif
Jales/Gralheira
Corcoesto
Las Médulas
Penedono
Salave
El Valle-Boinás-Carlés
Rodalquilar
Cerro ColoradoFilon Sur
Castromil
Montemor
Spain Corcoesto Gold Project
Geological map
Major Gold Deposits
Malpica–Tuy Gold Belt(Over 150 Km long structural zone with numerous gold occurrences)
Cabo OrtegalComplex
Malpica-Tuy Belt
ordenesComplex
BragançaComplex
MoraisComplex
Corcoesto
ALLOCTHONOUS COMPLEXES
SCHISTOSE DOMAIN OF GALICIA - TRAS - OS - MONTES (SDGTM)(Malpica-Tuy Gold Belt)
CENTRAL IBERIAN ZONE (CIZ)
GTMZ
WEST ASTURIAN - LEONESE ZONE (WALZ)
THRUST FAULT
GOLD OCCURRENCES
Spain Corcoesto Gold Project
Regional Geology
Gold Mineralization associated
with Quartz veins, silicification
and disseminated Apy.
Related to N70E Extensional
Zones (Second Order Shear)
into N30E Dextral Shear Zone
(First Order Shear).
Introduction
Spain Corcoesto Gold Project
Property Geology
Lithologies
Biotitic Gneiss Metasediments
Leucocratic Gneiss. Coarse grained Leucocratic Gneiss. Fine grained
Migmatites
Felsitic Dyke
Spain Corcoesto Gold Project
Property Geology
Gold mineralization consists mainly of Arsenopyrite-bearing Quartz Veins
included in larger zones of silicification, commonly with sericitic and potassic
alteration.
Three different styles of mineralization: 1.- Sheeted Quartz Veins
2.- Descrete Quartz Veins
3.- Silicified Breccia
Mineralization
Spain Corcoesto Gold Project
Property Geology
1.- Sheeted Quartz Veins (N70W/70NE):
Tightly spaced mm-cm Q veins,with weak Apy dissemination (<1% As).
Thick mineralized zones at low grade, up to 1.95g Au/t over 41.10m,
including 3.67g Au/t over 14.05m.
Hosted mainly in the fine grained leucocratic gneiss.
COR-29x
Mineralization
Styles
Spain Corcoesto Gold Project
Property Geology
2.- Descrete Quartz Veins (N70E/70NW):
Grey-bluish cm-dm Q Veins with fine grained
disseminated Apy (>1% As).
High grade in narrow zones, up to 148.50g Au/t over
1.10m (ddh 10W10)
Normally, high grade veins are included in lower
grade zones of weak silicification with small veins.
There may be large zones including few sets of High
grade Q veins up to 10.72g Au/t over 17.0m (ddh
10W10)
Hosted mainly in biotitic gneiss and migmatites (Pozo
del Ingles and Cova Crea West). 10W10
Mineralization
Styles
Spain Corcoesto Gold Project
Property Geology
3.- Silicified Breccia:
Grey-bluish silica with fine grained disseminated Apy (>1% As) flooding breccia zones.
High grade in narrow zones, up to 46g Au/t over 1.0m.
Hosted in biotitic gneiss (Pozo del Ingles West)
Mineralization
Styles
Spain Corcoesto Gold Project
Property Geology
S-C Fabric SYNTHETIC RIEDEL
FRACTURES (N40-50E)
(TRANSPRESSIVE REGIME)
DEFORMATION ELLIPSOID
ASSOCIATED WITH MAIN (N30E)
DEXTRAL SHEAR
ANTITHETIC RIEDEL
FRACTURES (N80-70W)
(TRANSTENSIVE REGIME)
DEFORMATION ELLIPSOID MINERALIZED VEINS
DEFORMATION ELLIPSOID
FRACTURES
LEGEND:
EXTENSION
(N50W-30W)
NW TREND FOR
Au-As SOIL ANOMALIES ?
N70E TREND
Au - As SOIL
ANOMALIES
Structural control forgold mineralization
Spain Corcoesto Gold Project
Property Geology
Drilling Summary
Number of Holes Total Meters
EDW Diamond Drilling
(Oct-2010 up to Dec-2012)
278 52,940.45
KNB Diamond Drilling
2006-2007 45 6,465.10
2005 12 2,245.15
KNB Total 57 8,710.25
RNGM Drilling
Core 192 16,794.65
Reverse Circulation 31 2,366.30
RNGM Total 223 19,160.95
Rio Tinto Drilling*
Core 38 7,582.98
Project Total 596 88,394.63
Spain Corcoesto Gold Project
Spain Corcoesto Gold Project
Lithology
Leucocratic gneiss
Schists
Alternating gneiss/
metasediments/migmatites
Felsitic dyke
Inferred contact
Legend
EDW Drilling Ended
Old Drilling
RNGM
KNB
RTM
Corcoesto ddh location map
0 500m
Spain Corcoesto Gold Project
Deposit modeling: Petón de Lobo. Cross Section 4400 (Rotated)
COR190
2.19g / 6.00m
COR202
3.45g / 11.00m
11W41
1.93g / 38.70m
06K13
7.25g / 6.25m
11W41
0.87g / 55.00m
06K13
1.80g / 20.85m
LOCATION MAP
Spain Corcoesto Gold Project
Deposit modeling: Petón de Lobo. Longitudinal Section (grade x thickness)
Spain Corcoesto Gold Project
Corcoesto S-N Project Cross Section (3660)
5401
2.28g / 8.00m
12W217
4.20g / 5.70m
12W219
5.66g / 3.50m
10W02
4.27g / 6.00m
12W222
2.87g / 9.80m
12W226
1.80g / 14.90m
10W07
2.28g / 17.10m
12W231
2.92g / 4.50m
11W48
5.43g / 2.10m
11W57
3.15g / 6.70m
5401
2,28g / 8.00m
COR209
4.39g / 11.50m
COR169
11.13g / 10.05m11W52
1.11g / 11.35m
COR221
1.23g / 13.00m
06K33
1.72g / 11.30m
N
S
LOCATION MAP
NN
Spain Corcoesto Gold Project
Deposit modeling: Pozo del Inglés. Cross Section 3860
LOCATION MAP
COR82
3.28g / 5.00m
COR74
2.03g / 3.00m
10W10
10.72g / 17.00m
11W69
2.64g / 8.05m
11W62
2.89g / 19.70m
11W13
2.86g / 12.30m
COR71
6.69g / 4.00m
Spain Corcoesto Gold Project
Deposit modeling: Pozo del Inglés. Longitudinal Section (grade x thickness)
N
Spain Corcoesto Gold Project
Deposit modeling: Cova Crea. Cross Section 3660
5401
2.28g / 8.00m
12W217
4.20g / 5.70m
12W219
5.66g / 3.50m
10W02
4.27g / 6,00m
12W222
2.87g / 9.80m
12W226
1.80g / 14.90m
10W07
2.28g / 17.10m
12W231
3.92g / 4.50m
11W48
5.43g / 2.10m
LOCATION MAP
N
Spain Corcoesto Gold Project
Deposit modeling: Cova Crea. Longitudinal Section (grade x thickness)
Spain Corcoesto Gold Project
2013 Updated Resource Estimate (Micon International, Aug 6, 2013)
NI 43-101 Pit Constrained Resource Summary (0.5 & 0.8 g/t Gold Cut-off)
Resource ClassCutoff
(g/t Au)
Tonnes
(x1000)
Gold
g/t
Contained Gold
(x1000 oz)
Measured 0.5 14,910 1.34 644
Indicated 0.5 9,298 1.28 383
Measured + Indicated 0.5 24,208 1.32 1,027
Inferred 0.5 5,321 1.21 207
Measured 0.8 10,170 1.67 546
Indicated 0.8 6,065 1.63 317
Measured + Indicated 0.8 16,235 1.65 863
Inferred 0.8 3,733 1.44 173
1. Mineral resources were classified following the guidelines of the JORC Code (2012) an accepted reporting code in terms of Canadian National Instrument 43-101. 2. Mineral resources are constrained within a Whittle pit shell based on a gold price of US$1,400/oz. 3. Numbers may not compute due to rounding. 4. All grades have been quoted in grams per tonne (g/t) for the resource inventory. 5. Density values were assigned in relation to an oxide surface; no further distinction between fresh and oxide material has been made within this resource estimate.6. There are no known legal, political, environmental or other risks that could materially affect the potential development of these mineral resources
Spain Corcoesto Gold Project
Geological Model
N
EDWLABORATORY % EXTERNAL LAB %
CHEMEX OMAC AGQ
SAMPLES 20311 90
DUPLICATES 1131 5 952 120 5
BLANKS 1136 5
TOTAL 22578 100 1072 5
KNBLAB % EXTERNAL LAB %
ITMA CHEMEX
SAMPLES 2954 90
DUPLICATES 207 6 198 6
BLANKS 117 4
TOTAL 3278 100 6
Spain Corcoesto Gold Project
QA / QC
Exploration Upside
37
Pozo Del Ingles Gold Zone Grade thickness long section
Spain Corcoesto Gold Project
Exploration Upside Potential
Corcoesto Gold Project – Plan Map
Peton de Lobo Gold Zone Grade thickness long section
All Gold Zones Open at Depth
Potential extensions to structures on strike
Open at Depth
Open at Depth
Current Open pit shell
Spain Corcoesto Gold Project
Gold zone orientations and upside potential at depth
Potential Resource below pits
FEASIBILITY AND MINE PLAN
Spain Corcoesto Gold Project
WE
Alan Noble, Mining Engineer
Jaye Pickarts, Metallurigical Engineer
Dermot M Claffey, Geotechnical Engineer
Site Visit.
Resource Model Update.
Open Pit Design.
Plant Design – Preliminary Review.
Preliminary Metallurgical Test Program.
Develop Conceptual Plant Capital and Operating Costs.
Conceptual siting study for Tailings Storage Facility.
Environmental and Permitting.
Economic Analysis.
Report.
Spain Corcoesto Gold Project
Scoping Study – Preliminary Economic Assessment (Nov, 2011)
WE
Project Assumptions (US $) Gold Price $ 1,300
Dollar/Euro $ 1.38/ Euro
Royalty 0.5%
Capital Contingency 17.5%
Discount Rate 5.0%
Base Case Highlights Average Annual Gold Production 102,000 Oz
Average Annual Net Revenue $ 60.0 Million
NPV $ 206 Million
Pre-Tax IRR 24%
Pre-Tax Payback 3.4 years
OP and UG Capital Costs $ 135 Million
Operating Cost $713/oz
Life of Mine 9.9 years
Life-of-Mine Parameters Mill Feed Grade 1.70 g/t Au
Stripping Ratio 8.0 / 1
Annual Throughput 2.1 M tonnes
Milling Rate 6,000 t/day
Gold Recovery 89.1%
PRE-TAX FINANCIAL MODEL
Gold Price Scenarios
Units Base Case
Gold US $ /Oz 1300 1500 1700
NPV 5% discount 206 340 475
Payback Years 3.4 2.5 1.9
IRR % 24 34 43
Spain Corcoesto Gold Project
Preliminary Economic Assessment
Working capital in the amount of $12.5 million, sustaining capital $33 million
and reclamation and closure costs of $10.5 million are also included in the above economic evaluation. Pit shells calculated at $1100/oz
WE
(PEA) Initial Capital Cost Breakdown
Engineering and Preproduction $28.5
Power $4.0
Process Plant $92.0
Tailings & Reclamation $10.9
Initial Capital $135M
Resource Drilling $9.0
Royalty Purchase $1.5
Contingency -- 17.5% $25.3
Spain Corcoesto Gold Project
Preliminary Economic Assessment Cost Breakdown
(PEA) Operating Cost Breakdown
Open Pit ($/tonne milled)
Mining (including waste and staff) $15.74
Milling $14.63
Tailings $1.00
G&A $1.15
Total $32.52
Underground ($/tonne milled)
Mining(including waste and staff) $40.00
Milling $14.63
Tailings $1.00
G&A $1.15
Total $56.78
Preliminary Economic Assessment Note Disclosure
• CIM definition standards were followed for the resource estimate
• The 2010 and 2011 resource models used an inverse-distance-power (IDP) grade estimation within a three-dimensional block model with mineralized zones defined by wireframed solids.
• A total of 19,075.7 m of surface trenching in 225 trenches, 443.1 m of adit sampling in 4 adits and 42,111.18 metres of diamond and RC drilling in 342 drill holes were used in the resource with sample spacing's that were less than 30 m for Measured resources, less than 40 metres for Indicated resources and less than 195 m for Inferred resources except for Inferred resources below 200 m from surface and for the northern two vein systems that used drill spacing's of 196 m
• A base cutoff grade of 0.65 g/t Au was used for reporting resources above a depth of 200 m from surface and a cutoff grade of 2.0 g/t Au was used for reporting resources below 200 m from surface
• Dilution is included for a minimum mining width of 2.0 m on a 4.0 m high mining bench
• Mineral Resources that are not mineral reserves do not have economic viability. Preliminary Economic Assessment NI43‐101 Compliant includes inferred mineral resources that are considered too speculative geologically to have the economic considerations applied to them that would enable them to be categorized as mineral reserves, and there is no certainty that the preliminary assessment will be realized.
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E
Spain Corcoesto Gold Project
Spanish Tax Advantages
1. The Spanish law has established tax advantages. The taxable income maybe reduced by up to 30% by deducting the following list of expenditures:
• Exploration and development to increase mineral resources and reserves• Operating costs, investment and studies of reclamation plans (land rehabilitation,
detoxification and water treatment)• Research to improve the recoveries• Laboratories and research equipment• Exploration
2. Depreciation of capital assets may be applied at any chosen rate and when applied in the first years of operation may reduce the taxable income to zero
Spain Corcoesto Gold Project
Preliminary Economic Assessment: Open Pits Location
W
E
Drilling campaign. Completed 52,490.45m. INFILL: All drilling focused on converting inferred
to Measured + Indicated
STEP-OUT/DOWN DIP: Testing high grade ore shoot extensions for additional UG resources
EXPLORATION: Drilling additional targets
Exploitation Project and Environmental Study completed and submitted by December, 2011.
Ministry of Environment approves CorcoestoGold Project´s Environmental Impact Statement. December 2012
Mining license’s and Final Strategic Project status expected by Q4, 2013.
Feasibility Study (Micon International) In Progress. Expected by Q3, 2013
Start of Mining plant and Tailing construction. Expected by Q1, 2014
Spain Corcoesto Gold Project
Project highlights and milestones for 2012/2013
Spain Corcoesto Gold Project
Environmental Timelines and licences
ENVIRONMENTAL PERMIT ISSUED
WE
Spain Corcoesto Gold Project
Land Acquisitions and Surface Rights
Expedited purchases as part of Strategic Industrial Status
Land valuations and purchases completed by 3rd party
Edgewater voluntarily offering a premium over market price
Total estimated cost ~$6M Euros for life of project (500 hectares)
Negotiating options to purchase with 10% down payment
APPlus(+) consultants hired to complete purchases
WE
Spain Corcoesto Gold Project
EIA Approved Final Project Layout
WE
Spain Corcoesto Gold Project
Plant layout
WE
Spain Corcoesto Gold Project
Plant layout
W
E
Additional Metallurgical testing completed since Nov, 2011 PEA
Final process design includes
Crushing
Grinding
Gravity
Floatation
Regrinding
Cyanidation and Carbon adsorbtion
Elution
Electrowinning
Production of Gold Dore
Overall recoveries projected to be 88%
Spain Corcoesto Gold Project
METALLURGY
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E
Spain Corcoesto Gold Project
6,000 tpd Overall Simplified Flow Sheet
6000 tpd FEED
OREFEED
ORE FEEDSTOCKPILE
OPTIONAL INDERECT FEEDING
100 ton TRUCK
180 m3BIN
FEEDER
JAWCRUSHER
FEED BELTCONVEYOR
MAGNET
P80 -150mm
CRUSHED ORESTOCKPILEDiam.44.0m
FEED BELTCONVEYOR
SAG MILL
VIBRATINGSCREEN
O/S +5mmm
OVERSIZECONVEYOR
Water
CYCLONE FEEDPUMP
HYDROCYCLONE
SUMP
O/F
TRASHO/S
2 BALL MILLS
TRASHSCREEN
CENTRIFUGALCONCENTRATOR
TAILS
U/F
FLOTATION CONCENTRATE
FLOTATIONCELLS
CONCENTRATE THICKENER
CONC.
FLOTATIONTAILINGS DAM
RECLAIMWATER POND
O/F
PROCESSWATER LOOP
U/F
TAILINGSTHICKENER FLOTATION
TAILINGS
REGRINDINGMILL (ISA)
CONCENTRATE
GOLDELECTROWINNING
8 CIL AGITATED TANKS
CYANIDEDESTRUCTION
CARBONELUTION
CARBONREGENERATION
REGENERATED CARBON
PREGNANT CARBON
LEACH RESIDUETAILINGS DAM
SMELTINGFURNACE
GOLDDORE
LEGEND:
Dry Feed Stream
Process Water Stream
Slurry Stream
Process Equipment
Au Conc. Slurry Stream
Au Conc. Solids Stream
Design by : JAT Date28/01//2013
RETURN WATER TO PROCESS
U/S
U/S -5mm
Spain Corcoesto Gold Project
Plant flow sheetROM STOCKPILE
PRIMARY
CRUSHING
COARSE STOCKPILE
SAG MILLPEBBLES MILL
BALL MILL CYCLONE
CLASSIFYING
GRAVITY
FLOTATION
REGRINDING
THICKENING
LEACHING
CIL
ELUTION ELECTROWINNING
BULLION
TAILINGS
TAILINGSFLOTATION
TAILS
THICKENINGCIL
TAILS
THICKENING
DETOX
FLOTATION
REAGENTS
SO2
FLOTATION
TAILINGS DAM
LEACHING
TAILINGS DAM
PR
OC
ES
S W
AT
ER
CN
Spain Corcoesto Gold Project
Plant Process Description
The Corcoesto treatment plant has capacity to treat 6.000 t/day of the orebody from Corcoesto. The plant consists of the following areas: crushing, grinding, gravimetric circuit, flotation, CIL (carbon in leach), gold recovery (carbon elution, electrolysis and bullion smelting) and detoxification.
The mined ore is classified according to gold grade in the Rom Pad. In the crushing stage the size is reduced from 800 mm to 150 mm. The crushed ore is sent to the grinding circuit to be reduced down to a P80 55 microns. The grinding circuit consists of a SAG mill and two ball mills arranged in a close-circuit configuration, with hydrocyclones as size classifiers. The cyclone overflow is sent to flotation and part of the underflow to a centrifugal concetrator. All the tailings from the gravimetric circuit are returned as the feed to the ball mill.
Following flotation the concentrate passes to a thickener together with the gravity concentrate. The combined concentrates are reground in an ISA mill to a P80 15 microns prior to cyanidation.
The CIL (Carbon in Leach) circuit consists of two pre leach tanks and seven leach/adsorbtion tanks where the dissolved gold is adsorbed onto carbon. The gold-loaded carbon is then subjected to elution and gold is recovered from the solution by electrolysis. The gold sludge from electrowinning is then smelted to Dore bullion (gold bars).
Spain Corcoesto Gold Project
Organization Chart
DIRECTOR OF OPERATIONS
MANAGING DIRECTOR
PRODUCTION MANAGER
FINANCIAL
DIRECTOR
DIR.
LEGAL
ENVIRONMENTAL
MANAGER
DIRECTOR OF
GEOLOGICAL EXP.
PLANT
MANGER
DIR.
H&S
MINING
MANAGER
W
E
Spain Corcoesto Gold Project
PROJECT LOCATION
PROJECT
LOCATION
GOLD VEINS LOCATION
Overview
PREOPERATIONAL
TASKS18 MONTHS
ROADS AND ACCESS CONSTRUCTION
PLANT CONSTRUCTION
LOURIDO DEVIATION CANAL CONSTRUCTION
PHASE 11,4 YEARS
SOUTH WASTE DUMP CONFIGURATION
ROADS AND ACCESS CONSTRUCTION TO THE NEXT EXPLOITATION AREAS.
DEVELOPMENT AND OPERATION OF THE COVA CREA PIT.OPENING OF POZO DEL INGLES PIT.
TAILINGS DAM DYKES CONSTRUCTION AND WATERPROOFING TAILINGS DAM AREA
LIXIVIATION TAILS DAM
FLOTATION TAILS DAM
PHASE 21,9 YEARS
DEVELOPMENT AN OPERATION OF THE POZO DEL INGLEÑS PIT. COVA CREA PIT BACK FILL AND WASTE DUMP CONFIGURATION IN COVA CREA AREA
ROADS AND ACCESS CONSTRUCTION TO THE NEXT EXPLOITATION AREAS
PARTIAL BACK FILL OF THE POZO DEL INGLES PIT
PHASE 30,6 YEARS
DEVELOPMENT AND OPERATION OF THE PICOTOS PIT
PHASE 41 YEAR
DEVELOPMENT AND OPERATION OF THE PETON DE LOBO PIT
PICOTOS WASTE DUMP CONFIGURATION AND REMODELING
PICOTOS WASTE DUMP REVEGETATION
DEVELOPMENT AND OPERATION OF THE PETÓN DE LOBO PIT
SOUTH WASTE DUMP FINAL CONFIGURATION AND REMODELING.
PHASE 53,3 YEARS
FINAL RESTORATION
AND CLOSURE
SOUTH WASTE DUMP REVEGETATION.
TAILINGS DAM RESTORATION
PETON DE LOBO PIT RESTORATION
Spain Corcoesto Gold Project
Final site layout
TAILING
PETÓN DE LOBO LAKE
SOUTH WASTE DUMP
PICOTOS WASTE DUMP
Spain Corcoesto Gold Project
Final site layout
Spain Corcoesto Gold Project
Final site layout
Spain Corcoesto Gold Project
Friday, January 11, 2013