Download - Spain Corcoesto Gold Project

Spain Corcoesto Gold Project

Galicia - Spain

Forward Looking StatementCertain statements in this document constitute “forward looking statements” which may notbe based on historical fact. Such forward looking statements involve known and unknownrisk, uncertainties and other factors which may cause the actual results, performance orachievements of the Company, or industry results to be materially different from any futureresults, performance, or achievements expressed or implied by such forward lookingstatements. Such factors include, among others, the following: actual results of explorationand development activities; the estimation or realization of mineral reserves and resources;the timing and the amount of future production; the costs and timing of the development ofnew deposits; future prices of precious and base metals; accidents; risks inherent in mineralexploration; risks associated with development, construction and mining operations;restrictions on foreign ownership; the Company’s history of operating losses and uncertaintyof future profitability; uncertainty of access to additional capital; environmental liabilityclaims and insurance; and dependence on joint venture partners.

Mr. Gregory Smith, P. Geo., Vice President of Exploration for Edgewater Exploration Ltd., is the qualified Person as defined by NI 43-101 and has prepared and approved the technical data and information in this presentation

1. INTRODUCTION, LOCATION, HISTORY

2. GEOLOGY AND RESOURCES

3. FEASIBILITY AND MINE PLAN


INTRODUCTION, LOCATION, HISTORY



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.


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


Government and Community support

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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

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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)


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


Key Project Personnel


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.


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.


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


Property Geology

Office

GEOLOGY AND RESOURCES


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.


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


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


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


Property Geology

Lithologies

Biotitic Gneiss Metasediments

Leucocratic Gneiss. Coarse grained Leucocratic Gneiss. Fine grained

Migmatites

Felsitic Dyke


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


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


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


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


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


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



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


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


Deposit modeling: Petón de Lobo. Longitudinal Section (grade x thickness)


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


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


Deposit modeling: Pozo del Inglés. Longitudinal Section (grade x thickness)

N


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


Deposit modeling: Cova Crea. Longitudinal Section (grade x thickness)


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

The September 2013 Corcoesto NI 34-101 Resource Estimate Technical Report was prepared by Jason Che Osmond, M.Sc., EurGeol., C. Geol., FGS, Senior Geologist, Micon International Co. Limited and a Qualified Person (“QP”) as defined by National Instrument 43-101


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


QA / QC

Exploration Upside

38

Pozo Del Ingles Gold Zone Grade thickness long section


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


Gold zone orientations and upside potential at depth

Potential Resource below pits

FEASIBILITY AND MINE PLAN


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.


Scoping Study – Preliminary Economic Assessment (Nov, 2011)

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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 1100 1300 1500

NPV 5% discount 71 206 340

Payback Years 5.6 3.4 2.5

IRR % 12 24 34


Preliminary Economic Assessment (Nov 2011)

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


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.

• The Spanish corporate tax rate is 30%, but the impact of taxes on the project would be much less after allowances for depreciation, amortization and structure of the local and international corporations.

• The Corcoesto Gold Project PEA Technical Report dated Dec 30, 2011 was prepared by Alan Noble, P.E., of Ore Reserves Engineering Inc., a professional independent mining engineer registered in the State of Colorado, USA and a QP as defined by National Instrument 43-101.

• Mr. Gregory Smith, P. Geo., Vice President of Exploration for Edgewater Exploration Ltd., is the qualified Person as defined by NI 43-101 and has prepared and approved the technical data and information in this presentation

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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


Preliminary Economic Assessment: Open Pits Location

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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


Project highlights and milestones for 2012/2013


Environmental Timelines and licences

ENVIRONMENTAL PERMIT ISSUED

WE


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

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EIA Approved Final Project Layout

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Plant layout

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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%


METALLURGY

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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


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


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).


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

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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


Final site layout

TAILING

PETÓN DE LOBO LAKE

SOUTH WASTE DUMP

PICOTOS WASTE DUMP


Final site layout


Friday, January 11, 2013

Download - Spain Corcoesto Gold Project

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