Cowal Overview
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Cowal Overview Evolution Mining is a leading, growth focussed Australian gold company, forecasting to produce between 770,000oz and 820,000oz gold in FY16. Our company has continued to grow through acquisition, completing the acquisition of Cowal in July 2015 and Mungari in August 2015. Cowal gold operation is forecast to produce between 215,000oz and 240,000oz in FY16. Location: 350km west of Sydney Producing: Gold Site management: Jason Grieve - General Manager Mine Site contact number: +61 2 6975 4700 History Gold first NSW government Cowal Gold Poject is Construction Cowal Gold Operation is discovered in West issues sold to Homestake commences on granted extension of Wyalong area Development Mining Cowal Gold mine life through to 2024 Consent conditions Project for the Cowal Gold Project 1893 1988 1999 2000 2001 2002 2004 2006 2014 2015 North Limited Evolution undertakes extensive Homestake Mining Mining acquire exploration at Lake North Limited is merges with Barrick First gold is poured Cowal Gold Cowal acquired by Rio Tinto Gold in April 2006 Operation Geology The Cowal gold deposits (E41, E42, E46, Galway, and Regal) occur within the 40km long by 15km wide Ordovician Lake Cowal Volcanic Complex, east of the Gilmore Fault Zone within the eastern portion of the Lachlan Fold Belt. The overall structure of the gold deposits is complex but in general consists of a faulted antiform that plunges shallowly to the north-northeast. The deposits are aligned along a north-south orientated corridor with bounding faults, the Booberoi Fault on the western side and the Reflector Fault on the eastern side (the Gold Corridor). The E41 West mineralisation strikes north-northeast and dips -70° east, and measures 750m along strike and 250m across strike. Individual mineralised zones are 35m to 50m wide and extend down dip for 125m. The E41 East mineralisation strikes east-west and dips -35° to -80° south, and measures 475m along strike and 500m across strike. Individual mineralised zones are 35m to 50m wide and extend down dip for 225m. The E42 deposit comprises the Regal/Galway corridor and the E42 Main Zone. The Regal/Galway corridor trends north-south, dips vertical to -70° west, and is composed of small and discontinuous lenses. The corridor is approximately 900m along strike and 200m wide. The E42 Main Zone trends north-south and dips -35° to -45° west. The two principal domains in the E42 Zone are separated by the Cowal Fault. Overall, the E42 Main Zone mineralisation is approximately 850m by 850m and extends 500m down dip. The E46 deposit is subdivided into the East and West zones. The East zone is a continuation of the Regal/Galway corridor, trends north-south, dips vertical to -70° west, and extends approximately 750m along strike and 175m across strike. Individual lenses in the E46 East mineralised zone are 1.0m to 15m wide, 25m to 250m long, and extend 50m to 200m down dip. The E46 West mineralisation trends north-northeast, dips -40° west to flat-lying, and measures approximately 650m along strike and 17m across strike. Individual zones are approximately 50m wide and extend 200m down dip. Reserves: 72.58Mt @ 0.93g/t gold for 2,181koz Au Resources: 162.87Mt @ 0.97g/t gold for 5,087koz Au Cowal CONT Mining Mining production is derived from a single open pit, utilising conventional drill and blast, load and haul methodologies, mining 10 - 15m benches at full bench height. The operation is scheduled to continue until FY25 at current estimates with a remaining life of mine strip ratio of 0.25:1. Mining method/s: Drill, blast, load and haul Ore mined: 11.4Mt per annum (FY15) Waste mined: 10.8Mt per annum (FY15) Mine work roster: 4/4 Haulage/mine trucks: 13 x CAT 789 trucks, 3 x CAT 785 truck Shovels/excavators/loaders: 2 x Liebherr 994B, 1 x Hitachi EX3600, 2 x CAT992G loaders, 1 x CAT 385 excavator Dozers: 3 x CAT D10T dozers, 1 CAT834H wheel dozer Haul road maintenance regime/equipment: 2 x CAT16H grader, 1 x CAT 345 excavator, 2 X CAT water carts Drilling equipment: 2 x Atlas Copco D65, 1 Terex SKF Drill Explosives: AN emulsion / Unitronic & Nonel detonation Blasting contract services: Orica Australia P/L Mine survey equipment/products: Surpac / Trimble survey equipment Geotechnical equipment/products: MineSight, Prism monitoring Mine planning software: Surpac, MineSched, Whittle Cowal open pit August 2015 Cowal CONT Processing Plant Ore treatment/processing method/s: Crush-grind-float-regrind-CIL Annual average throughput rate: (FY14): 7.3Mtpa; (FY15): 7.2Mtpa Nameplate capacity of plant: 6.4Mtpa Crushing plant total capacity: 1,800tph Power: AGL energy supply Primary crushing: Metso 54-75 Superior MK-II gyratory crusher Grinding Plant Equipment: FFE 36' x 20.5' SAG. FFE 22' x 36.5' ball mill Grinding Media: Forged steel, 125mm bal (SAG mill), 80mm balls (ball mill) Screening plant/equipment: Schenck Vibrating (SAG discharge), Delkor Linear (COF) Recycle crusher: 2 x Sandrik H6800 hydrocone cone crushers Mineral liberation/recovery method: Flotation, regrind, CIL of concentrate Mineral liberation plant/equipment: 2 x SK1200 and 10 x OK200TC (flotation), Metso Vertimill (VTM1000WB) and 2 x Metso 355kW SMD’s (regrind), 4,000m3 Pre-Ox, 2 x 4,000m3 and 6 x 1,000m3 CIL Tanks Gravity circuit: Falcon Concentrator / Acacia Reactor Process pumps: Krebs UMD 18x16 Chemicals/reagents used: Orica (Cyanide), Ixom (Hydrochloric acid, sodium hydroxide, sulphuric acid, SMBS, PAX), BOC (Oxygen), Boral (Lime), Solvay Interox (Hydrogen peroxide), SNF (Flocculant) Refining plant/equipment: 10t AARL elution circuit, ANSAC regeneration kiln Process control system: Yokogawa DCS Maintenance system: Pronto Production work roster: 45 Evolution employees, rosters (5/2/4/3), (4/4) Maintenance work roster: 32 Evolution employees, rosters (5/2/4/3), (4/4) General Accommodation: Residential accommodation in West Wyalong Mine Workforce: 341 employees & contractors Safety/Environment/Community: Evolution strives to enable all work activities related to its operations to be carried out safely and with all reasonable measures taken to remove or reduce risks to the health, safety and welfare of personnel, plant and equipment. Evolution is committed to attaining an outstanding level of environmental performance in all of its workplaces and has a strong corporate culture and a commitment to proactively and positively engage with the communities in which we operate. We recognise the need to consult with and understand the values, needs, beliefs, traditions and sensitivities of the communities in which we operate Cowal CONT Process Flowsheet ABN: 74 084 669 036 Registered Office P +61 2 9696 2900 F +61 2 9696 2901 Level 30 175 Liverpool Street ASX Announcement Sydney NSW 2022 www.evolutionmining.com.au 17 October 2016 ACQUISITION OF MARSDEN COPPER-GOLD PROJECT Evolution Mining Limited (ASX:EVN) (“Evolution”) advises that it has entered into a binding agreement with Newcrest Operations Limited (“Newcrest”), a wholly owned subsidiary of Newcrest Mining Limited to acquire the Marsden copper-gold project. Evolution will make an upfront payment of A$3 million on completion of the acquisition and a further A$7 million payment contingent on a decision to mine1. The agreement is subject to conditions including governmental approval. Marsden is a copper-gold porphyry deposit located immediately to the south-east of Evolution’s Cowal gold mine in New South Wales. Marsden is the nearest known sizeable mineral deposit to the Cowal operation outside the Cowal tenement package and as such has strategic value to Evolution’s exploration activities in the region. The Marsden deposit hosts an Indicated and Inferred Mineral Resource of 180 million tonnes grading 0.20g/t Au and 0.38% Cu containing 1.1 million ounces of gold and 0.67 million tonnes of copper2. Technical review by Evolution has shown that the potential to develop the Marsden deposit is enhanced by utilising the Cowal milling circuit and associated infrastructure. The current Cowal treatment facility is unable to treat Marsden material concurrently with Cowal ore and hence any option involving processing at Cowal will be at the end of the Cowal mine life. Commenting on the Marsden acquisition, Jake Klein, Executive Chairman of Evolution said: “The Marsden project provides long term optionality to our nearby Cowal operation and has the potential to further extend the life of what is already a long-life operation.” For further information please contact: Bryan O’Hara Michael Vaughan Group Manager Investor Relations Media Relations Evolution Mining Limited Fivemark Partners About Evolution Mining Evolution Mining is a leading, growth-focussed Australian gold miner. Evolution operates six wholly-owned mines – Cowal in New South Wales; Mt Carlton, Mt Rawdon, and Cracow, in Queensland; and Mungari and Edna May in Western Australia. On 24 August 2016, Evolution announced that it was acquiring an economic interest in the Ernest Henry copper-gold operations in Queensland. In FY16 Evolution produced 803,476 ounces of gold at an AISC of A$1,014 per ounce generating a net mine cash flow of A$428.2 million. Assuming completion of the acquisition of an economic interest in Ernest Henry, Evolution has revised FY17 Group gold production guidance to 800,000 – 860,000 ounces at an AISC of A$900 – A$960 per ounce. 1. The A$7 million amount is indexed annually according to CPI up to a maximum amount of A$10 million. The contingent payment is only payable if the decision to mine is made within 10 years from the date of acquisition 2. The information that relates to the Marsden Mineral Resources is extracted from Newcrest Mining’s Mineral Resources and Ore Reserves Statement provided in its 2016 Annual Report (released 6 October 2016) available to view at www.newcrest.com.au.