Aura Minerals Inc. · NASDAQ:AUGO
Aura Minerals — Corporate Update (November 2010)
21 slides from Aura Minerals's corporate update, November 2010
Slide 1: Shareholder Update
Shareholder Update November 2010
Slide 2: Forward-Looking Statements and Cautionary Notes
Forward-Looking Statements and Cautionary Notes Forward-Looking Statements This presentation contains or incorporates by reference “forward-looking information” under applicable Canadian securities legislation. Except for statements of historical fact relating to the Company, information contained h
Slide 3: Introduction
Introduction Mine Plan Options: 1. Continue to mine with existing fleet and try to “catch-up” waste strip 2. Split pit North and South (2 phase) 3. Split pit East and West (2 phase) 4. Dedicated waste stripping for 3-4 months – complete waste push back and change overall mine operations and developm
Slide 4: Option 1
Option 1 1. Continuing as is - not working 2. Waste catch-up is too slow – contractor fleet inadequate to achieve mine plan and catch up on stripping; pit layout completely inefficient to allow accelerated strip – Congested operation 3. Operating costs for this option could impair asset 4. Waste dil
Slide 5: Option 2 – Split Pit
Option 2 – Split Pit 1. Split Pit either N/S or E/W 2. Has certain benefits in terms of phasing out waste strip and using mined out areas for waste storage 3. Study showed that these options would still provide low grade ore for several months and would still have ore dilution – though less than cur
Slide 6: Sao Francisco - Section
Sao Francisco - Section F/W H/W Low grade ore blocks - currently being mined TSX : ORA 6
Slide 7: Sao Francisco - Section
Sao Francisco - Section F/W H/W Waste bound TSX : ORA 6 7
Slide 8: Sao Francisco - Section
Sao Francisco - Section F/W H/W Higher grade ore blocks TSX : ORA 6
Slide 9: Sao Francisco - Section
Sao Francisco - Section F/W H/W Waste Low bound grade ore blocks - currently Higher being grade mined ore blocks TSX : ORA 6
Slide 10: Sao Francisco - Hanging Wall – Current Configuration
Sao Francisco - Hanging Wall – Current Configuration Narrow benches - congestion Waste dilution Loading operation inefficient TSX : ORA 7
Slide 11: Sao Francisco – Current Pit - 15m Wide Benches
Sao Francisco – Current Pit - 15m Wide Benches m TSX : ORA 8
Slide 12: Sao Francisco – Pit Layout Post Waste Push Back
Sao Francisco – Pit Layout Post Waste Push Back Minimum 30 metre wide benches TSX : ORA 9
Slide 13: Sao Francisco – Current Section
Sao Francisco – Current Section F/W H/W TSX : ORA 10
Slide 14: Sao Francisco – Proposed
Sao Francisco – Proposed F/W H/W Proposed excavation 30m wide benches TSX : ORA 11
Slide 15: Sao Francisco – 3-4 Month Waste Stripping Plan
Sao Francisco – 3-4 Month Waste Stripping Plan Dedicated 3-4 months stripping plan • Concentrate on mining waste • Remove 4-5 Mt. • Expose all ore in H/W and Footwall • End up with 30 m wide operating benches, • Ore grade after start-up will be 0.8 -1.0 g/t CGO and 0.37 g/t DLO. TSX : ORA 12
Slide 16: Sao Francisco – Benefits
Sao Francisco – Benefits Benefits include: • Wider benches for better blasting and mining efficiency – eliminate dilution • Greater potential to mine in lifts – more efficient operations • Building “wide bench” operating philosophy into operating plan – double side loading and more efficient mining.
Slide 17: Sao Francisco – Gravity Tails Treatment
Sao Francisco – Gravity Tails Treatment Gravity Slimes 500 tpd Crushing 30% Gravity Existing Plant Plant 5% by Ponds mass Thickener 70% 25% of ore Smelted Gravity Gold CN Storage Bin Leach Circuit Thickener Pregnant Solution Solid Liquid Separation To Pads TSX : ORA 14 17
Slide 18: Sao Francisco – Tailing Re-Treatment Economics
Sao Francisco – Tailing Re-Treatment Economics • Estimated Capex $12-14 million (depending on used equipment availability) • Estimated production – 9,000-11,000 oz/annum • Cash costs $200-250/oz • Payback <12 months TSX : ORA 15
Slide 19: Sao Francisco – Cash Cost Reductions on Restart
Sao Francisco – Cash Cost Reductions on Restart • Independent studies indicate savings in operation of crushing/gravity circuit of approximately $1.00/t treated. However, Company project savings conservatively based on $0.50/t for $2.4 million/annum • Savings of $0.45/t on replacement of crushed roc
Slide 20: Sao Francisco – Cash Costs
Sao Francisco – Cash Costs • Production Forecast – Heap and gravity – 90,000 -95,000oz/annum – Tailings retreatment – 10,000-11,000 oz/annum – Total production – 100,000 -106,000oz/annum • Projected Annual Operating Costs - $74 million • Projected Cash costs 700/oz – 740/oz TSX : ORA 17
Slide 21: Thank You
Thank You Aura Minerals Inc. (TSX: ORA) P.O. Box 10434 - Pacific Centre 777 Dunsmuir Street, Suite 1950 Vancouver, BC V7Y 1K4 Tel: 604-669-4777 Fax: 604-696-0212 Email: info@auraminerals.com Web: www.auraminerals.com