Hilti Mining Australia Industry Success with Hilti Innovation

Hilti Mining Australia “Industry Success with Hilti Innovation” www. hilti. com. au Hilti Mining 2012 Mining I 2010 I RIM 11

Hilti Mining Australia Agenda • • Hilti Introduction Product Overview Hilti One. Step Bolt Innovation/ Technical Specs One. Step Field Test Data Ground Support Customer Portfolio Project Update New Products Launched 2011 www. hilti. com Hilti Mining 2012 2

Hilti Mining is established in major markets and quickly expanding dark red: Established Hilti Mining Key Markets; orange: Current Business build-up www. hilti. com Hilti Mining 2012 3

Hilti ground control systems HTT Hilti Cable Bolts HFD Thrust Dowels HMS Hilti Mining Screws HOS Hilti One Step resin bolt (steel) HFD-T Torque. Tension Dowels HTT Hilti Cable Bolts complement the full Hilti ground support offer www. hilti. com Hilti Mining 2012 4

Pretension One. Step– Technical Specification Yield Strength > 270 KN Ultimate strength > 320 KN Elongation at failure >10% www. hilti. com Tube length Tube diameter Drill bit diameter Shear Strength 1200 – 2500 mm 38. 5 mm 40. 5 mm 250 – 300 KN Hilti Mining 2012 5

Drive & Pretension system Drilling ● Clockwise drilling with water flushing Setting ● Dispense resin and hold 5 -10 sec to allow fast resin (red above) to cure Tensioning ● Anti clockwise rotation www. hilti. com Hilti Mining 2012 6

Pretension One. Step – Features Two piece nut right hand rotation drilling left hand rotation pre tension Two speed Resin cartridge in steel inner tube for optimum transport and storage www. hilti. com Drill tip Static resin mixer ensures correct mixing of resin components Channel for flushing water Hilti Mining 2012 7

One. Step Field Testing Customer Test Type Qty Tested Strata Average Displacement (mm) Newlands 300 mm 3 Coal/ Sandstone 5. 32 17. 66 Broadmeadow 300 mm 3 Coal 2. 55 12. 5 Oaky North 300 mm 3 Sandstone 40100 mpa 9. 02 22. 25 Carborough Downs 300 mm 3 Coal 5. 6 15. 6 Crinum East 300 mm 3 Sandstone 8. 26 18. 6 North Goonyella 300 mm 5 Coal 3. 12 12. 2 Grasstree 300 mm 3 35 -70 mpa Sandstone 9. 58 18. 3 www. hilti. com. au Hilti Mining 2012 Average Load (t) 8

Ground Support Customer Portfolio QLD NSW ●Newlands Northern ●Metropolitan ●Broadmeadow ●Angus Place ●Carborough Downs ●Beltana ●Moranbah North Coal ●West Wallsend ●Spring Vale ●Ravensworth ●Dendrobium ●Myuna ●Tahmoor ●Mannering ●NRE ●Austar ●Newstan www. hilti. com Hilti Mining 2012 9

Newlands • Newlands Northern underground operates 3 development panels with CM 005 currently utilising the One. Step system in the roof • Newlands have been bolting with the One. Step on different machines and different areas since 2009 and have installed app 50, 000+ ISL and Pretension bolts • Brian Vorster has completed an internal assessment of the One. Step at Newlands in 2010. Review of the Hilti Bolt Trial 04 02 2010 Abstract from report Intensive reviews by SCT of the technical characteristics of the Hilti One Step Bolt (OSB), numerous short encapsulation pull tests, over coring, in loco trials of in excess of 22 000 bolts in what is considered “normal” NUG conditions and in a heavily faulted area in the Newlands Underground Extension mains development has indicated that the Hilti OSB is a suitable support system to use at this mine site. • Hilti operation and geotechnical auditing shows excellent average encapsulation rates with 96%+ bolts showing resin at the collar www. hilti. com. au Hilti Mining 2012 10

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Broadmeadow Mine • Broadmeadow operates two development panels with Joy 12 CM 12 continuous miners currently with COM 2002 utilising the One. Step system in the roof with plans for the second miner to be on line by the end of the year. • Broadmeadow has installed approximately 1000 bolts since the start up in October with excellent encapsulation rates and installation quality. • Broadmeadow have previously installed 9, 000 ISL bolts 2007 -08 and were Hilti Mining’s first large scale project in Australia. • Hilti have also submitted a report on the longwall retreat past the bolts 07/08 including input from Site Senior Geotec Robert Coutts. Abstract from report “I have not observed or measured any material change in roof behaviour during longwall retreat. There was no measured movement in any of the tell-tales installed in the MG 4 area were Hilti One. Step bolts were installed” www. hilti. com. au Hilti Mining 2012 12

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Moranbah North Coal • Moranbah North Coal operate two longwalls with the new Joy 1750 t LW 108 being the largest capacity shields in in the world. • Moranbah North Coal decided to utilise the Hilti One. Step pretension (HOSPT) bolt to complete their LW 108 bolt up, with the main driver being the bolt’s ability to deliver superior operator safety, and installed performance potential compared with the standard solid bar bolts previously used by MNC. • Moranbah North Coal installed approx. 2, 000 2. 1 m bolts in the roof and face during the 108 L/W take-off in July, supplemented with 8 m cable bolts. • Discussions regarding a large scale Development project utilising HOSPT were initiated due to the success experienced on the longwall bolt-up. www. hilti. com. au Hilti Mining 2012 14

Moranbah North Coal – LW 108 bolt up Pull test location Boltup www. hilti. com. au Hilti Mining 2012 15

Moranbah North Coal Testimonial from Richard Campbell- Consultant Geotechnical Engineer The LW 108 bolt-up and salvage was to occur in heavily structured ground, where concerns were raised regarding the loss of encapsulation and the risk for operators when required to spend time out on the RFB’s inserting chemicals, bolts & changing drill steels. A proposal was put forward for the use of the HOSPT bolts. At the last moment the mine approved the use of the One. Step bolt (9 days to bolt-up). The response from the Hilti team was very professional, from doing pull tests through to risk assessments, delivering training and modifications to the RFB’s all with in the tight time frame required. During bolt up Hilti provided MNC with 24 hr product and technical support, ensuring a smooth process. The result was the most controlled shield salvage the mine had experienced, the bolted ground stayed intact as the e-frame advanced with the shields being salvaged, the face remained stable and the ventilation circuit was maintained MG to TG for the entirety of the salvage process. None of the typical strata issued at MNC was experienced for this salvage, and indeed the face stood up until the last 60 chocks, at which time the roof simply folded onto the floor, in a low energy manner. No injuries were recorded, and the operators involved have asked that we use the same bolts on the next salvage – which we are intending to do. Of the 2000 odd bolts installed we had 1 failure, where the operator pushed the wrong lever. www. hilti. com. au Hilti Mining 2012 16

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Longwall Customers QLD • • Carborough Downs x 1 Moranbah North Coal x 2 Broadmeadow x 1 + Jan ‘ 13 Newlands x 1 + Apr ‘ 13 NSW • • • Springvale X 3 West Wallsend x 4 Ravensworth x 3 Beltana x 3 Metropolitan x 4 Angus Place x 5 Integra x 1 Ashton x 1 West cliff x 1 Dendrobium Booked Dec www. hilti. com Hilti Mining 2012 18

NSW Projects Mine Application ● Development Trial – 1. 5 m PT Bolts ● Gate road drivage ● 980 panel – CM 01 Joy 12 cm 30 Sandvik RFB with Hilti system mounted Current Status ● Trial started 12 th September ● 2700+ bolts installed to date ● Average consumption of 1, 2001, 400 bolts p/m ● 10, 000 bolt trial extension ● Second miner committed for trial and awaiting parts www. hilti. com Hilti Mining 2012 19

NSW Projects Mine Application ● QDS Bolter – Rib repair ● 2. 5 m long HOS bolts ● Rib breakout >2 m in extreme cases ● Current mechanical anchor system not providing adequate support Sandvik RFB with Hilti system mounted Current Status ● HOS system purchased & rig converted and bolting commenced ● Average consumption of 500 bolts & plates /month ● 10, 000 bolt trial being considered in development panel www. hilti. com Hilti Mining 2012 20

NSW Projects Mine Metropolitan Application ● 5000 1. 5 m cuttable HOS bolts for both the block and pillar side ● 20 T tensile with a 12 T nut pull off required ● Assessment of suitability based on following criteria: • Drillability vs failure rate • Can the miner and longwall cut them out • Outbye belt issues Sandvik RFB with Hilti system mounted Current Status ● 2500 installed ● All criteria successfully achieved ● Gen 2 HOS-C fabricated now www. hilti. com Hilti Mining 2012 21

Hilti Mining Screws Mining screws – Work like a resin bolt without resin! www. hilti. com Hilti Mining 2012 22

HFD-XT Premium Dowel www. hilti. com Colour White Length (mm) 850, 1000, 1150, 1450, 1720, 2050 Dowel's Root Diameter(mm) Dowel's Outer Diameter(mm) 22 25 Cropping Shape Bevelled Head Bond Strength (k. N) 110 Nut Breakout (Nm) 85 Shear Strength (k. N) 95 Tensile Strength (k. N) >300 Torque Strength (Nm) >120 Hilti Mining 2012 23

Thank you. www. hilti. com Hilti Mining 2012 24