Cowal – Evolution Mining

Evolution Ownership
100%

Location
350km west of Sydney, Australia
40km north-east of West Wyalong
Located on the traditional lands of the Wiradjuri People

Local Communities
Bland, Lachlan and Forbes shires

Year commenced operations
Mining commenced 2005
Processing commenced 2006

History

1980s: Exploration by North Ltd defines E41 and E42 deposits
1991: E46 deposit first delineated
1995: E42 Feasibility Study
2000: North Ltd acquired by Rio Tinto
2001: Homestake acquires 100% interest in the Cowal project from North Gold, a subsidiary of Rio Tinto
2001: Barrick Gold Corporation acquires the Cowal project through a merger with Homestake Mining Company
2005: Mining of the E42 deposit commenced by conventional open-pit methods (truck and shovel)
2006: Processing commenced third quarter of 2006
2015: Evolution acquires 100% interest in the Cowal project from Barrick Gold Corporation

Style of mineralisation
Structurally hosted (epithermal to mesothermal) sheeted veins and shear hosted lode

Contained metals
Gold

Measured, Indicated and Inferred Resources (at 31 Dec 2017)
199.80Mt at 0.95g/t gold for 6.08Moz gold

Ore Reserves (as at 31 Dec 2017)
116.28Mt at 0.81g/t gold for 3.05Moz gold

Mining Method
Conventional load and haul, drill and blast open-pit operation

Gold Production
CY2006: 122,000 ounces
CY2007: 240,000 ounces
CY2008: 191,000 ounces
CY2009: 233,000 ounces
CY2010: 298,000 ounces
CY2011: 269,000 ounces
CY2012: 268,000 ounces
CY2013: 297,000 ounces
FY2013: 314,000 ounces
FY2014: 270,000 ounces
FY2015: 277,000 ounces
FY2016: 238,000 ounces
FY2017: 263,000 ounces

Processing Method
Crushing, two stage grinding, sulphide flotation, regrind, CIL recovery

Nominal treatment rate
7.5Mtpa

Geology
The deposit is hosted by a sequence of Ordovician volcanic rocks. These volcanics are located on a major structural zone and form part of a belt of intermediate to mafic volcanic and granitic rocks that extend from Temora in the south to Peak Hill in the north

Mining
The Cowal operation is an open pit mining operation with production from a number of different faces within the single pit. Mining is carried out with a company-owned fleet of mining equipment. Pit benches are 9m in height mined as 3 x 3m flitches. Ore is hauled by truck from the pit face to either a stockpile area or directly fed into the primary crusher

Processing
The Cowal processing plant was commissioned in May 2006 and consists of crushing, two stage grinding, sulphide flotation, regrind, CIL recovery. The plant currently processes 7.5 Mtpa.

At 30 June 2016 approximately 2.7 million ounces of gold had been produced at Cowal

Environmental Permit
Please see tabbed section below

Cowal operations are ISO14001 certified for Mining and Ore Processing Operations and Support Services for Gold and Silver production

Fact Sheet
Cowal fact sheet – updated May 2018

Cowal corporate video

Supplier Information

For access to suppliers tender information at Cowal gold operations please click here.

Blasting Schedule

Blasting is undertaken on-site daily, generally between the hours of 11.00am and 3.00pm.

Processing Rate modification - Environmental assessment, March 2018
Mine life extension modification - Environmental assessment, November 2016
Environmental monitoring data
Environmental management plans
CEMCC minutes
Annual Reviews
Complaints register

Processing Rate modification - Environmental assessment, March 2018

Processing Rate Modification – Environmental Assessment

Main Document

1. Cover letter and executive summary (PDF 3.5MB)

2. Table of Contents (PDF 322KB)

3. Main Text – Sections 1 to 3 (PDF 9MB)

4. Main Text – Section 4 (PDF 7MB)

5. Main Text – Section 5 to 7 (PDF 7MB)

6. Main Text – Section 8 and 9 (PDF 503KB)

7. Attachments 1 to 4 (PDF 5MB)

8. Appendix A – Hydrogeological Assessment (PDF 16MB)

9. Appendix B – Hydrological Assessment (PDF 7MB)

10. Appendix C – Biodiversity Assessment Report and Biodiversity Offset Strategy (Part 1 – Main Text) PDF 17MB

11. Appendix C – Biodiversity Assessment Report and Biodiversity Offset Strategy (Part 2 – Attachments) PDF 8MB

12. Appendix D – Aboriginal Cultural Heritage Assessment (Part 1 – Main Text) PDF 7MB

13. Appendix D – Aboriginal Cultural Heritage Assessment (Part 2 – Appendices) PDF 14MB

14. Appendix E – Noise and Blasting Assessment (PDF 3MB)

15. Appendix F – Air Quality and Greenhouse Gas Assessment (PDF 9MB)

16. Appendix G – Land Contamination Assessment (PDF 14MB)

17. Appendix H – Road Transport Assessment (PDF 5MB)

18. Appendix I – Socio-Economic Assessment (PDF 912KB)

Mine life extension modification - Environmental assessment, November 2016

Mine Life Modification – Environmental Assessment

Main Document

Cover letter (PDF 359KB)

1. – Executive Summary (PDF 3.1 MB)

2. – Table of Contents (PDF 185KB)

3. – Sections 1 – 3

4. – Section 4 (PDF 3MB)

5. – Section 5 – 8 (PDF 10MB)

6. – Attachment 1 (PDF 1 MB)

7. – Attachment 2 (PDF 1MB)

8. – Appendix A (PDF 25 MB)

9. – Appendix B (PDF 3MB)

10. – Appendix C (PDF 14MB)

11. – Appendix D (PDF 8MB)

12. – Appendix E (PDF 6MB)

13. – Appendix F (PDF 15MB)

Environmental monitoring data

Environmental Monitoring

Protection of the Environment Operations (POEO) Act

2018 — Monitoring Data (PDF 1006KB)

2017 — Monitoring Data (PDF 999KB)

2016 — Monitoring Data (PDF 2 MB)

2015 — Monitoring Data (PDF 259 KB)

2014 — Monitoring Data (PDF 463 KB)

2013 — Monitoring Data (PDF 2MB)

2012 — Monitoring Data (PDF 882 KB)

Monitoring Locations (PDF 3 MB)

Environmental management plans

Environmental Management Plans

Air Quality management plan	Noise management plan
Air Quality management plan	Noise management plan (July 2018)
Blast management plan	Mine operations - surface water, groundwater, meteorological and biological monitoring program
Blast management plan (Jan 2015)	Mine operations - SWGMBMP (July 2018)
Biodiversity offset management plan	Monitoring program for LPB
Biodiviersity offset management plan (May 2015)	Monitoring program for LPB (July 2018)
Compensatory wetland management plan	Rehabilitation management plan
Compensatory wetland management plan	Rehabilitation management plan (Sept 2017)
Cyanide management plan	Soil stripping management plan
Cyanide management plan (July 2018)	Soil stripping management plan (Feb 2015)
Emergency response plan	Transport of hazardous materials study
Emergency response plan (July 2018)	Transport of hazardous materials study (THMS) (Jan 2006)
Environmental management strategy	Transport of hazardous materials study annexure (Feb 2007)
Environmental management strategy (July 2018)	THMS addendum (sodium cyanide) (June 2010)
Erosion and sediment control plan	THMS Addendum (Hydrogen Peroxide) (Aug 2010)
Erosion and sediment control management plan (July 2018)	THMS Addendum (Sodium Cyanide) (Nov 2010)
Flora and fauna management plan	THMS Addendum (AN and ANE) (Mar 2017)
Flora and fauna management plan (May 2015)	THMS Addendum (Ammonium Nitrate and Ammonium Nitrate Emulsion) (July 2018)
Hazardous waste and chemical management plan	THMS Addendum (Caustic Soda) (July 2018)
Hazardous waste and chemical management plan (July 2018)	THMS Addendum (Hydrochloric Acid) (July 2018)
Heritage management plan	THMS Addendum (Sodium Cyanide) (July 2018)
Heritage management plan	THMS Addendum (Sulphuric Acid) (July 2018)
Indigenous Archaeology and Cultural Heritage management plan	Water management plan
Indigenous Archaeology and Cultural Heritage management plan	Water management plan (July 2018)
Land management plan
Land management plan
Land management plan addendum (May 2015)

CEMCC minutes

CEMCC Minutes

Annual Reviews

2017 Annual Review Report

2016 Annual Review Report

2015 Annual Review Report

2014 Annual Review Report

2013 Annual Review Report

2012 Annual Review Report

2011 Annual Review Report

2010 Annual Review Report

Complaints register

Complaints Register

Schedule 2 of the Development Consent (DA 14/98) includes Condition 9.4(a)(v),which requires that a complaints register, updated on a monthly basis, be made publicly available on the Cowal Gold Project’s website.