The Asia Miner

SEP-OCT 2014

The ASIA Miner - Reporting Important Issues to Mining Companies in the Asia Pacific Region

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74 | ASIA Miner | September/October 2014 PT ATLAS Copco Nusantara has expanded its line of mid-range blast- hole rigs with the addition of the new DM30 II series. The DM30 II is built on the engineering of Atlas Copco's DM45 and DML blasthole drills. The DM30 II is suited to both rotary and DTH applications with low and high pressure compressor options. Atlas Copco Drilling Solutions marketing manager Mark Stewart, who is based in Nanjing, China, says the DM30 II was born from experience of having operated 52 units in diffcult and remote areas over a pe- riod of more than fve years. "We established manufacturing in Nanjing with the goal of devel- oping a world-class, affordable product for the mineral extraction industry." Pre-release units have been successful drilling for gold in Papua New Guinea, coal in Indonesia, contract drillers in South Africa and copper in Mon- golia. Now the unit is available for rotary and DTH customers in the mining and construction industry in all non-Tier 4 emissions countries globally. "We are well positioned with service and parts available from our Nanjing distribution centre to support the DM30 II in all corners of the world," Mark Stewart says. Upgrades on the DM30 II include a more ro- bust I-beam frame, increased decking and in- creased component access, and improved rod handling and breakout. Standard features now include automatic thread lubrication, head-up tram interlock and grease manifold, plus a wider range of options created from customer special requests. The component layout and spacious electric over hydraulic cab are taken directly from its big brothers in the DM line and the DM30 II's hy- draulic system components, feed system and rotary head have been proven by more than 28 years of use on the DM30. WATPAC Civil & Mining is trialling the frst Atlas Copco SmartROC T45 surface drill rig in Australia at a mining operation in Western Australia. Watpac has a focus on operating leaner and more sustainable mining and secondary processing operations. Its mining manager in Western Australia Brendan Vaughn said, "I think my job as a re- sponsible engineer and offcer of Watpac is to make sure we have a strategy that is fully supported from the manufacturer through to what we're doing for our clients, across multiple commodities, re- mote sites, nationally. "That's an undertaking that requires us to be committed [and] look for like-minded equipment suppliers. We want to be innovative and want to work with people who are innovative. It's not innovation just for the sake of innovation, it's innovation that works. The smart drill has been an incredible piece of technology to put out there to our clients." Now the 'smart' technology in the SmartRig exists in a new machine that Brendan Vaughan thinks could be the best drill rig in its class. Wat- pac has been putting the only SmartROC T45 in Australia and only the second working anywhere in the world through its paces at Ramelius Resources' Mt Magnet gold mine. Three months has shown it uses considerably less fuel than its predecessor, the F9C. But it's not the signifcant monthly fuel bill savings that have him most excited by the performance to date. "The T45 is better than an F9C and the reason comes back to a discussion not about fuel, but about engines," he said. "It's about litres burnt through the engine. That's signifcant because if savings of 30% on fuel burn are there – and we are seeing better – it means the engine is wearing out less quickly. "There is always a big focus on engine life with these track-mounted ma- chines. There is a direct correlation between fuel reduction and frame life, and that's a much bigger saving. The fuel saving is the tip of the iceberg." He said the promise of maintenance cost savings related to the sim- plifed hose and ftting layout of the T45 was likely to become evident after 7000 hours or so of operation and higher drill penetration rates with the extra 5kW of rock drill power (now 30kW) were also bound to be seen once some early rod-changing challenges were overcome. "We put it in the hardest rocks … basalts and dolerites, and banded iron formations," he says. "It's not the granite and gneisses they test these rigs on in Sweden, but basalts and dolerites aren't for the faint of heart, and BIFs tend to be dense and a little bit abrasive too. "We've seen penetration rates hit the same rates as the F9C, which of course is not good enough, but the reason is not the rock drill … we are trying to sort out issues with rod changing, and we're pretty keen to see what the pen-rate benefts of sorting that out will be." Commenting on the question of a possible end point for the T45 'trial', he stated: "I don't think they're going to get their drill rig back." Watpac trials Atlas Copco 'green' rig PT Atlas Copco Nusantara says the new DM30 II blasthole drill is suited for both rotary and DTH applica- tions with low and high pressure compressor options. PT Atlas Copco expands its line

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