Indaba 2015 - Capetown, South Africa

Introducing the world's biggest raise bore drill rig

Transcript

1. INDABA Cape Town, 2015 Introducing the world’s biggest raise bore rig Mr. Rob Barker Group General Manager
2. About Macmahon  International mining contractor  Founded in 1963, more than 50 years’ experience  Listed on the ASX  Employs around 3000 people  Operations throughout Australia, and in New Zealand, South East Asia, Mongolia and Africa  Strong client base
3. World class projects
4. Diverse client base
5. Geographic spread
6. Innovation in Raise Drilling
7. What is raise drilling?  Set the rig up  Drill the pilot hole  Attach the reamer and pull back  Disassemble the rig
8. What is the challenge?  Mines are getting deeper and increased ventilation is required  As mines get deeper, ore haulage shafts are also considered  Macmahon can drill deep vent/ore haulage shafts in a single pass  Competitors would need drill some of these shafts in two stages
9. The Herrenknecht RBR900VF  Macmahon and Herrenknecht collaborated to design the largest raise drill in the world  Allows larger, deeper shafts in a single pass  ….currently deployed to BHPB’s Olympic Dam in South Australia 8m 2000m
10. Leading the raise drill industry …most comprehensive fleet in Australia… Biggest raise drill in the world
11. Large Rig Comparison Rig Type Operating Thrust (Pounds) Operating Torque (Foot-pounds) Herrenknecht RBR900VF 5,000,000 682,000 Redbore 100 3,000,000 535,000 Wirth HG 380 SP 2,700,000 525,000 Strata 960 (RUC Aust) 2,110,000 405,000 Wirth HG 330 2,000,000 380,000 Robbins 121R 2,000,000 380,000 Robbins 123R 2,000,000 380,000
12. RBR900VF rig benefits  Extremely reliable, manufactured with proven tunnel boring componentry  Relatively compact, easy to transport and set up  Can also access a wide range of locations above and below ground  Rods have been designed to minimize operating area required underground
13. RBR900VF installation 1 2 3 4
14. RBR900VF loading rods
15. RBR900VF drilling the pilot hole
16. The Big Rig in action – Attaching the Reamer
17. The Big Rig in action – Breaking Through  The reamer is pulled all the way to surface  …and through the concrete foundation  The reamer is then secured as the rods are disconnected
18. The Big Rig in action – Removing the Reamer  Reamer is lifted out of the shaft with a crane  The bore is completed and will be fitted with exhaust fans for ventilation to the mine  The completed hole may be lined or may remain as is
19. The Big Rig in action – Olympic Dam  The RBR900VF completed a 736m x 4.5m hole at Olympic Dam in November last year  The hole was completed ahead of time, and below budget  It has now moved onto a program where it will drill a 565m x 4.5 metre hole  Both holes are for ventilation of the mine
20. Summary  Macmahon invest in technology to create value for mining clients  We partner with OEMs to design more efficient mining equipment  We look for ways to differentiate from competitors  We offer a global service aimed at increasing safety standards while decreasing costs for miners
21. Thank you