Slide 1: DeGrussa Copper-Gold Mine – Diggers and Dealers Site Visit
For personal use only •DeGrussa Copper-Gold Mine – Diggers and Dealers Site Visit Sunday 2 August 2015
Slide 2: Sandfire DeGrussa Copper Mine
Sandfire DeGrussa Copper Mine For personal use only 2
Slide 3: Health, Safety and Sustainability
Health, Safety and Sustainability Sustainability • We are committed to operating and exploring in a Health and Safety sustainable and socially responsible manner to: • Health and Safety is a core value and health and safety management – Maximise the positive impacts on society For personal use only
Slide 4: DeGrussa Solar Power Project
DeGrussa Solar Power Project • Construction to start in early August 2015 with For personal use only completion in February 2016 Solar Hybrid System Solar PV panels 10.3 MWp (34,080 modules of 310 Wp) Mounting systems Single axis tracking PV inverter 10 Mwac Storage system 4 MW / 1.8 MWh (6 MW peak)
Slide 5: DeGrussa Underground Mine
DeGrussa Underground Mine • ~29 km of development to date • Total Ore to ROM end of July 2015 = 3.6Mt For personal use only Portal • Average grade mined to date = 4.9% Cu • Jan 15 - Jun 15 @ 1.7Mtpa mining rate All Mined • Paste fill to date = 713,604m³ Stopes • Sustainable mining rate lifted from 1
Slide 6: C5 Resource Definition – Recent Drilling Intercepts
C5 Resource Definition – Recent Drilling Intercepts For personal use only 6
Slide 7: Processing Flowchart
Processing Flowchart For personal use only 7
Slide 8: Grinding Improvement
Grinding Improvement Improvements • Primary cyclones replaced with screen to improve mass transfer to secondary For personal use only milling circuit for particle size distribution control and optimal chalcopyrite liberation for flotation • Pebble crusher installed for breakage of critical size part
Slide 9: Flotation Improvement
Flotation Improvement Improvements For personal use only • Column cell installed to recover ultra fine liberated chalcopyrite • Advance control improvements to be implemented through use of StarCS process control and BlueCube technology • Maximising chalcopyrite liberation in the secondary grinding
Slide 10: Paste Plant
For personal use only Paste Plant 10
Slide 11: Doolgunna Exploration Opportunities
For personal use only Doolgunna Exploration Opportunities 1. Monty 2 2. Homer 3. Prospective 1 Sequence 3 4. Homestead 6 3 5. Nth Robinson 5 7 6. Halloween 7. Central 4 11
Slide 12: Drilling Completed – Monty A/C Drilling
For personal use only Drilling Completed – Monty A/C Drilling • Drilling continued over the interpreted host stratigraphy at Monty central volcanics • Geological interpretation is ongoing • Minor anomalous results received 12
Slide 13: Monty Discovery – Results to Date
Monty Discovery – Results to Date • Drilling progressing by targeting extensions For personal use only to mineralisation • Building our understanding of local geological context – Stratigraphy – Structure – Mineralisation controls • Results to Date: – 16.5 metres grading 18.9% Cu and 2.1 g/t Au (TLD
Slide 14: Homer
Homer For personal use only • Homer trend drilling to date is encouraging • Strong geochemistry and exhalative signature • Drilling up dip position to provide geochemistry vectors and EM platform 14
Slide 15: Drilling North Robinson Range
Drilling North Robinson Range • Four DD holes (DGDD403- DGDD406) completed For personal use only • Nine R/C holes (DGRC844-852) completed. • Over 5.6 km of anomalous geochemistry • Initial intersections received show encouraging Au and Zn mineralisation including: DGDD406 4m@4.80% Zn 286m-190m (core
Slide 16: Contact Details: Sandfire Resources NL
For personal use only Contact Details: Sandfire Resources NL Registered Office and Principal Place of Business Level 1, 31 Ventnor Avenue, West Perth, Western Australia 6005 T +61 8 6430 3800 F +61 8 6430 3849 www.sandfire.com.au 16