Tag Archives: Byrnecut

Ma’aden Mansourah Massarah digital mine offers up blueprint for the future

Duncan Bradford (pictured) says Saudi Arabia’s flagship digital gold mine won’t maintain its new title for long, with the early success of a technology blueprint and partnership at Mansourah Massarah creating a template for Ma’aden’s next major gold project in the Kingdom.

An experienced Australian mining leader who has been executive vice president of Ma’aden’s fast-growing Base Metals and New Minerals Business Unit since 2022, Bradford is overseeing operational ramp-up of the geometallurgically complex Mansourah Massarah mine while running a rule over final feasibility work on nearby Ar Rjum.

Ar Rjum is the cornerstone piece of a plan that has Ma’aden doubling its annual gold output to 1 Moz over the next six years.

Hailed earlier this year as the Middle East’s first digital mine, Mansourah Massarah has been a fitting test of the value that state-of-the-art mine and mobile fleet sensor, software and autonomous technologies can bring to a greenfield site pushing the proverbial envelope on a number of fronts in Saudi Arabia’s nascent gold sector.

Bradford will sit down with Hexagon Chief Product Officer, Dave Goddard, at this month’s IMARC conference in Sydney, Australia, to talk about a partnership that has now been going for five years and which is positively impacting financial, safety and even environmental outcomes at Mansourah Massarah.

Moderated by Worley’s Nick Bell, the discussion will present one of the more fascinating international case studies on the role technology is now playing to help miners counteract long project lead times and high-cost environments.

Bradford, who cut his teeth in Saudi mining at Jabal-Sayid while running major international underground mining contractor Byrnecut’s international business, says an appetite to embrace the industry’s latest technology is paying dividends for Ma’aden. And he expects those dividends to grow.

Mansourah Massarah, with low-grade surface pits and a 4 Mt per annum autoclave and processing plant, is a “learning ground for Ar Rjum” in terms of its use of a sophisticated, integrated digital platform to precisely control material flows and efficient deployment of a contractor’s mobile assets and people.

“We will get the bugs out of the system at Mansourah Massarah so we can have it set up and ready to go from day one at Ar Rjum, which is in terms of tonnes to be more than double the size of Mansourah Massarah,” Bradford says.

“We are not the first company in the world to implement this technology. Places like Australia and the US have got it. But we are the first in Saudi to implement it and certainly one of the few mining companies to install such a system on a contractor’s owned fleet.

“Unlike all the other gold mines [in Ma’aden’s stable] this is a sulphide and an oxide mine, and it’s a low-grade mine. We need to closely track material coming out of the two different pits feeding ore to the stockpiles, and to actively manage dilution so we don’t destroy value in the orebody. And we need to monitor the ore blend going into the autoclave.

“It’s critical to get not only the gold [in the feed] right but also the organics for the sulphur content for the autoclave. Ultimately I want the system to help control the grade going through the stockpiles, through the crusher, into the system. We’re not there yet, but we are on the path.”

Mansourah Massarah is a beachhead, too, for Hexagon, one of the world’s major mining technology providers.

It has given the Swedish-headquartered company a base on which to build in one of the world’s most exciting mineral exploration and development growth regions. It has provided an avenue to demonstrate the capabilities of a software, sensor, operator safety and machine control technology stack assembled and integrated over the past decade.

Most importantly though, Goddard says, the long-term alliance is showing collaboration can be more than a slogan in the industry.

“It’s been very encouraging to see the step-change in terms of productivity the products can help bring,” he says. “They are, in essence, optimisation tools and the latest configuration parameters and algorithms build on work we have done over a number of years at mining projects across the globe.

“Leveraging that value in a partnership, though, really comes down to trust and a willingness to adopt. And I think that’s what is really key here.

“When we went into Saudi Arabia we made a commitment to Maaden and also to the Kingdom; to be a permanent presence there and to be real partners. The level of trust has governed the speed and effectiveness of the technology rollout at Mansourah Massarah.”

Written by Richard Roberts, Editorial Director, Beacon Events.

International Mining is a media sponsor of IMARC, taking place on October 29-31, in Sydney, Australia.

Byrnecut rolls out first Sandvik battery-powered jumbo in South Australia

Contract miner Byrnecut has taken the next step on its journey towards expanding its battery-electric equipment fleet with the roll-out of the Sandvik DD422iE development drill with dual controls at the BHP-owned Prominent Hill mine in South Australia.

The drill is the first battery-electric Sandvik development drill in operation in Australia.

Byrnecut took delivery of the battery electric jumbo at Prominent Hill copper mine in December 2023. The machine was put to work alongside Byrnecut’s existing fleet of diesel-powered equipment, including Sandvik development drills, production drills, cable bolters, trucks and loaders. Five months on, drill operators and Byrnecut management alike are impressed by the jumbo’s reliability and its contribution to a cleaner, quieter underground environment, Sandvik reports.

Technical Services Manager at Byrnecut, Dave Taylor, said th Sandvik DD422iE jumbo has “fitted in exactly” as a diesel-powered drill would have, working as it is designed to.

“It’s got all the pros that you would expect, just without all the fumes that come out of the diesel engine,” he added. “We always want to be at the forefront of technology and to look for ways to reduce emissions and diesel particulates – and this is one way of doing that.”

Taylor says the roll-out was simplified, as the Sandvik DD422iE charges by using the same electrical infrastructure used to power the rock drills on the diesel-powered jumbos. “The jumbos we currently have use their diesel engines to tram around but are plugged in and the rock drills run off thousand-volt power via a trailing cable,” he says. “There’s was no additional infrastructure because the DD422iE is charging using what’s already there in the diesel version.”

In a typical scenario, the Sandvik battery-electric jumbo will tram to the work site using electricity stored in its battery. While drilling is underway, the battery is recharged via the patented Sandvik Charging While Drilling technology, allowing the machine to tram away once the drilling cycle is completed.

General Manager for Byrnecut Australia, Craig Barendrecht, says the feedback he has received on the drill is positive despite some initial reservations. “It’s fitted in seamlessly and we’ve had no dramas with operating a battery drill amongst the standard diesel fleet.”

Barendrecht says with Byrnecut planning to increase their battery-electric equipment fleet, the performance of the jumbo is encouraging. “We’ve never previously seen a massive market for the battery jumbo because of the restrictions around tramming distances,” he says. “This is helping to dispel some of those preconceived concerns with how to actually fit an electric jumbo in amongst the traditional diesel fleet.

“This is just an incremental step in getting to that ultimate point where we run a full electric fleet of drills and loaders and trucks.”

Maintenance Superintendent, Mark Noden, says there was an initial learning curve around maintenance requirements for the battery electric rig. However, from an operator perspective it is simple to step from the diesel model to the electric. “I have had no complaints and the support from Sandvik is always good,” he says.

Nathan Cunningham, Business Line Manager for Underground Drills at Sandvik Mining and Rock Solutions, says Byrnecut has consistently demonstrated that it is a forward-thinking mining business, and the purchase of the Sandvik DD422iE reinforces this. “Byrnecut’s trust in the Sandvik product has paid off with the rig operating exactly as it was expected to.”

Rio Tinto backs BEV use at Kennecott Underground with growing Sandvik fleet

Rio Tinto is progressing its mobile equipment electrification move at the Kennecott underground operation near Salt Lake City, Utah, having transitioned from using Sandvik Mining & Rock Solutions battery-electric loaders and trucks in a proof of concept to commercially deploying Sandvik battery-electric TH550B trucks and a Sandvik LH518iB loader.

Just last year, Rio Tinto approved $498 million of funding to deliver underground development and infrastructure for an area known as the North Rim Skarn (NRS). Production from the NRS is due to commence this year and is expected to ramp up over two years, to deliver around 70,000 tonnes of additional mined copper over the next 10 years alongside open-pit operations at Kennecott.

This followed a September 2022 announcement where Rio Tinto approved development capital totalling $55 million to start underground mining in an area known as the Lower Commercial Skarn (LCS) at Kennecott. Underground mining within LCS started in February 2023 and is expected to deliver a total of around 30,000 tonnes of additional mined copper through the period to 2028.

These two investments will support Kennecott in building a world-class underground mine which will leverage battery-electric vehicle (BEV) technology, following a trial with Sandvik equipment in 2022 involving an LH518B loader and Z50 truck.

The first LH518iB loader in North America has just been delivered to site, with the automation-capable vehicle equipped with Sandvik’s patented self-swapping battery system, including the AutoSwap and AutoConnect functions, to minimise infrastructure needs and enable the loader to return to operation significantly sooner than ‘fast-charge’ mining BEVs, Sandvik claims.

Since launching the vehicle in March 2023, Sandvik has confirmed orders or made deliveries of the LH518iB to operations owned by LKAB, Boliden,Torex Gold, Foran Mining, Rana Gruber and Byrnecut.

Rio Tinto will complement these machines with a fleet of Sandvik TH550Bs, some of which are already operating on site. This 50-t payload truck combine Sandvik’s 50 years of experience in developing loaders and trucks with Artisan™’s innovative electric drivelines and battery packs. The electric drivetrain delivers 560 kW of power and 6,000 Nm of total torque output, allowing for higher ramp speeds for shorter cycle times and an efficient ore moving process, according to the OEM. All of this comes with zero emissions.

They also come with AutoSwap and AutoConnect functions that Sandvik has refined for battery swap processes that take only a few minutes.

Rio Tinto has previously stated on battery-electric vehicle use: “BEVs create a safer and healthier workplace for employees underground, increase the productivity of the mine and reduce emissions from operations.”

Sandvik retaining the platform approach for load & haul electrification

Sandvik’s aim to electrify the underground mining space have been gaining traction over recent years, with single machine trials and deployments that typified the early stages of its mission now replaced by fleet-wide agreements that, if not already in operation, will be starting up underground in the years to come.

As with all transitions, the electric one has not been easy. There have been teething issues along the way; whether that is equipping batteries for the harsh nature of an underground mines, educating employees about best practice maintenance and operations of this equipment, or facing an onslaught of questions about potential battery fires witnessed in passenger vehicles via YouTube.

Just how much traction the company has been gaining was made clear late last year during its Capital Markets Day event.

Here, the company outlined that battery-electric vehicles accounted for 15% of all load and haul orders in the year to the end of October. On top of that, it displayed an impressive pie chart showing that, from January-October 2023, Sandvik had won more than 75% of orders for battery-electric equipment.

These numbers do not factor in the cable-electric loaders the company has been selling for decades, plus the underground battery-electric drilling equipment that trams on battery power at mining operations across the globe.

For all this positive momentum, battery-electric does not make sense for everyone…yet.

IM has documented a series of both diesel-electric and hybrid diesel-electric LHD sales in Australia recently, with at least one of these sales following the trial of battery-electric equipment.

Sandvik has made clear that it will have something in store for miners in transition between diesel and fully-electric operation, stating last year that it was developing diesel-electric trucks and loaders for the industry.

Unlike some of its peers, Sandvik is deliberately building this offering with fully-electric operations in mind.

“Currently we are developing diesel-electric solutions both for trucks and loaders,” Juha Virta, VP Sales and Marketing for the Load and Haul Division within Sandvik Mining and Rock Solutions, told IM. “We aim to maximise the customer value by utilising modular design in our equipment: battery and diesel-electric equipment will have commonalities eg in drivelines, hydraulics, electrics and spare parts.”

This approach will make it easier for customers to transfer from diesel-electric equipment to battery-electric equipment, Virta says. The “commonalities” could also prove beneficial in developing the skill sets required from service personnel.

“Energy storage elements are also included in our development portfolio, enabling, for example, hybrid solutions, delivering positive results in the area of fuel consumption and the equipment performance,” he added.

This is all part of an increasingly diverse offering from the OEM that Brian Huff, Vice President of New Technologies for the Load and Haul Division within Sandvik Mining and Rock Solutions, mentioned during the Capital Markets Day.

He said: “We’re taking the technology of our battery-operated drills, loaders and trucks, and expanding that with diesel-electric using the same motors, inverters and componentry in a modular approach that allows us to offer diesel solutions with the same electrified driveline from our battery-operated equipment.”

The developments the company is making as part of this project are being displayed on the TH66X diesel-electric demonstrator – a Toro diesel-powered truck that has been retrofitted with an electric driveline – that customers first saw in Turku, Finland, in 2022. This machine is currently in factory tests, according to Virta, saying that component validation and a variety of simulations were also being run.

“The program also includes a significant amount of testing in a real underground mine environment,” he added. “Developing new technology and ensuring its performance takes some time, and sufficient and careful tests are extremely important – we are in a very good progress with that currently.”

For this, Sandvik is using not only its Test Mine in Tampere, Finland, but also the Pyhäsalmi mine. Sandvik is using the latter operation – owned by First Quantum Minerals – as part of its involvement in the Callio consortium: a group of companies focused on developing ‘FutureMINE – the future digital test mine project’.

One of the other participants in this consortium is Byrnecut, who has been partnering with Sandvik based on a recent LinkedIn post by Sandvik Mining and Rock Solutions.

“We have long traditions with working in close collaboration with different customers, and that will continue to be Sandvik approach also going forward,” Virta said when asked about this partnership. “Byrnecut is one of our customers and a very important partner for us, and, along with Barminco, will be one of the first companies to test the TH66X in the field.”

Considering the majority of the team focused on this diesel-electric demonstrator are based in Turku, one would expect this facility to have significant influence on the commercial offering that follows.

The facility is undergoing an expansion focused on incorporating an additional 7,000 sq.m of production and storage space previously occupied by Tunturi, a manufacturer of bicycles and fitness equipment. The whole of the plant for load and haul equipment is also set to be enhanced and modernised.

Petri Liljaranta, Supply Director for the Load and Haul Division within Sandvik Mining and Rock Solutions, says the expansion is progressing as planned with all but a few of the company’s finishing functions relocated according to its plans. “This final part of the project is expected to be finished in the June quarter,” he added.

One of the expansion project’s targets was to increase the manufacturing space at its facilities, and this target has already been achieved, with the company well equipped to respond to growing volume needs in the coming years, according to Liljaranta.

“Based on current views, the battery-electric vehicle manufacturing capacity is expected to meet expected market demand during 2024,” he said.

SandvikLH621i

Sandvik loaders, development drills and bolter heading to Byrnecut at Kathleen Valley

Mining contractor Byrnecut has chosen Sandvik to supply automated loaders, underground drills and rock tools as it gears up to deliver underground mining services at the Kathleen Valley lithium project in Western Australia.

Sandvik will supply Byrnecut with seven 21-t-payload Toro™ LH621i loaders with AutoMine®, three Sandvik DD422i development drills with Dual Controls and a Sandvik DS422i cable bolter. The equipment order was primarily booked in the September quarter.

Sandvik will also supply Byrnecut with rock tools for the operation over four years.

The deal follows Liontown Resources awarding Byrnecut with the circa-A$1 billion ($656 million) contract for development and production at the mine in August 2023.

The Kathleen Valley lithium project in Western Australia’s northern Goldfields region is one of the most significant new long-life lithium projects anywhere in the world, owner Liontown Resources says, with a mineral resource estimate of 156 Mt at 1.4% Li2O and 130 ppm Ta2O5. The operations have been optimised for an initial 3 Mt/y, producing approximately 500,000 t/y of spodumene concentrate with a 4 Mt/y expansion planned in Year 6, to deliver approximately 700,000 t/y of spodumene concentrate.

Byrnecut is investing A$125 million in new equipment for the project, with mobilisation having already commenced and first production is targeted for mid-2024.

Wayne Scrivens, Vice President, Sales Area Australia and New Zealand, Sandvik Mining and Rock Solutions, said: “Byrnecut and Sandvik have a long history of collaboration on projects across the country and we’re delighted that Byrnecut is once again investing significantly in Sandvik equipment and rock tools for this major project. This deal highlights the growing understanding across the Australian mining sector that Sandvik’s advanced solutions help mines run safer, more efficiently and more sustainably.”

Sandvik’s Toro LH621i underground loaders (one pictured above) are engineered for rapid mine development and large-scale underground production, according to the OEM. Smart boom geometry optimises hydraulic power for fast bucket filling and the handling of large rocks.

Under AutoMine Multi-Lite an operator can remotely control and simultaneously supervise multiple Toro LH621i loaders from a comfortable environment, reducing exposure to dust, noise, vibrations and other mine hazards. This creates a safer work environment for both the operator and mine personnel, Sandvik says.

When used in combination with Sandvik’s Dual Controls package, Sandvik DD422i face drills can be used for a wide variety of underground applications, including boring, bolting and meshing. The package improves drill optimisation, versatility and performance and was designed to address needs identified by mining contractors.

Sandvik will also provide Byrnecut premium rock tools as well as a range of added services and digital solutions to support its drilling operations. The deal will also include carbide recycling, with Sandvik’s Carbide Recycling Program helping both the OEM and the wider industry to meet circularity goals and ensure raw materials are used efficiently and sustainably.

Epiroc Minetruck MT65 S haul trucks heading to Kathleen Valley lithium mine

Epiroc says it has won a large order for underground mining trucks in Australia from global mining contractor Byrnecut for use at the Kathleen Valley hard-rock lithium mine in Western Australia.

Byrnecut, one of the world’s largest underground mining contractors, has ordered a fleet of Minetruck MT65 S haulers as part of the order, valued at about SEK130 million ($11.9 million).

The equipment will be used at the in-development Kathleen Valley project, where lithium as well as tantalum will be produced. Production is currently targeted to begin in 2024.

Byrnecut was, earlier this year, awarded the underground mining services contract at Kathleen Valley by Liontown Resources.

Epiroc will also provide parts and service support, including service technicians on site.

Helena Hedblom, Epiroc’s President and CEO, said: “We are excited to contribute to the success of the new Kathleen Valley mine, where the production of lithium, especially, will support the acceleration of the transformation to a low-carbon society.”

Sami Niiranen, President of Epiroc’s Underground division, added: “The newly updated Epiroc Minetruck MT65 S is a top-of-the-line machine designed with a focus on safety, productivity, energy efficiency and operator comfort. We look forward to continue working together with Byrnecut to make their mining operations successful.”

Epiroc and Byrnecut have a long-standing partnership, and the contractor already runs a fleet of Minetruck MT65 haulers at other mining site, the OEM says.

The ordered mining trucks have several advanced features, such as Epiroc’s telematics system Certiq, which allows for intelligent monitoring of machine performance and productivity in real-time. Delivery will begin soon and will continue in 2024 and 2025.

Contract miner Byrnecut to use Sandvik Remote Monitoring Service at 11 Australian sites

Contract miner Byrnecut will roll out Sandvik’s Remote Monitoring Service solution at nearly a dozen of its Australian mine sites, following the completion of a successful trial of the technology, the OEM says.

Under a 12-month deal, Sandvik specialists will monitor machine performance and operator behaviour on some 95 Sandvik underground dump trucks and LHDs at 11 Byrnecut-operated mines. Daily and weekly reports will help Byrnecut to identify crucial maintenance areas and to encourage best operating practices, with major potential savings and efficiency gains, Sandvik says.

“At Byrnecut, we’re serious about continuously increasing productivity, uptime and safety,” Byrnecut Australia Managing Director, Pat Boniwell, said. “Based on the results of the three-month trial of Sandvik’s Remote Monitoring Service solution, we are now deploying this technology across all our connected sites in Australia where Sandvik equipment is in use. We’re optimistic that this will yield measurable productivity gains and cost savings for the business.”

Sandvik Mining and Rock Solutions’ Business Line Manager – Parts & Services, Graham Barrow, added: “Sandvik and Byrnecut have a long history of successful cooperation. We’re delighted to now be providing Remote Monitoring Service at these 11 sites and to be assisting Byrnecut to achieve an even more efficient operation.”

Sandvik’s Remote Monitoring Service solution uses existing technology fitted to the Sandvik equipment to collect telemetry data on a wide range of variables. The data collected is then analysed by Sandvik data scientists, providing insights into factors such as the health of the engine, transmission, hydraulics and other machine parts, and how operator behaviours are affecting fuel and parts consumption and efficiency, it says. Customers receive daily reports on so-called ‘operator violations’, where Sandvik analysts have detected counterproductive operator behaviour. This can include braking and accelerating simultaneously – a practice that prematurely wears out service brakes – running the engine overspeed and selecting inappropriate gears for the conditions at hand.

Weekly reports are delivered on identified maintenance opportunities, such as replacing a part that is rapidly wearing out before it fails and causes an unplanned stoppage to production.

Sandvik says: “While customers can potentially analyse such data in-house using their own dashboards, using the Sandvik solution means that the data is viewed by OEM experts who understand better than anyone the tolerances of the equipment and common causes for failures and premature wear. In addition to that, Sandvik harnesses large pools of telemetry data for mining equipment. This combination enables us to provide actionable insights in a concise and easy-to-digest form.”

The trial of the Sandvik Remote Monitoring Service at an underground gold and copper mine, where Byrnecut provides development and production services for the mine owner, began in July 2022. It ran over three months, during which time Sandvik experts monitored the performance, health and driver behaviour on 30 pieces of load-and-haul equipment, including Sandvik underground LH621i loaders and TH663i trucks, according to Barrow.

“Byrnecut is always looking to do things better and they identified the mine as a location where they were hoping to increase equipment reliability and maintenance intervals,” he says. “We were very happy to demonstrate how our solution is suited to exactly this task.”

Boniwell says the trial yielded concrete results.

“We were able to see a clear reduction in parts costs over the course of the trial, which, of course, is pleasing to us,” he says. “Another key outcome was a change in behaviour. As the operators received updates on their performance, they looked for ways to improve and become more efficient. It increased communication between the operators and the maintenance teams and this benefitted the whole operation.”

Operational efficiencies and resource efficiencies are anticipated to contribute to a drop in parts usage and waste, contributing sustainability benefits across the agreement sites.

While the initial contract between Sandvik and Byrnecut is for 12 months, Sandvik says it hopes the deal will be extended at the end of that period.

Sandvik to take next mining productivity leap with automated battery-electric loaders

Sandvik Mining and Rock Solutions has been one of the key facilitators of mining’s electrification and automation transition underground, establishing a core offering of battery-electric equipment that leverages Artisan™ battery packs and electric drivelines, plus a wide offering of cable tethered machines, for the former; and the continued rollout of the renowned AutoMine® automation platform for the latter.

The company is now embarking on its next evolution with the integration of the two, which will soon culminate in the launch of the LH518iB – the AutoMine-ready version of the 18-t-payload LH518B.

Integrating electrification and automation is nothing new for Sandvik; the company has been providing AutoMine functionality on cable tethered loaders for over 10 years.

Automating a machine that operates off battery power only is a different proposition.

Although the battery swap process on the LH518iB can’t yet be fully automated, one operator can run the entire cycle from a surface chair, including tele-remote battery swapping. Human involvement underground is only required for connecting and disconnecting batteries from chargers.

“The LH518iB will be the first battery machine that will be automated, compatible with our AutoMine Lite and AutoMine Fleet offering solution as well as our Manual Production Monitoring system,” Ty Osborne, Product Line Manager Underground Automation at Sandvik Mining and Rock Solutions, told IM.

AutoMine Lite is an automation system for a single Sandvik loader or truck and a more advanced alternative for AutoMine Tele-Remote, while AutoMine Fleet – as the name would suggest – is an advanced automation system for a fleet of Sandvik underground loaders and trucks sharing the same automated production area.

Having delivered AutoMine automation systems since 2004 and accumulated a footprint of about 800 automated and connected units, the automation of Sandvik’s growing battery-electric fleet was always on the cards, according to Osborne, predating the launches of the AutoMine Concept Underground Drill – in 2022 – and the AutoMine Concept Loader – in 2020 – both of which are fully autonomous and battery-electric.

The changes involved with automating the battery-electric LH518iB mainly relate to “industrialising” the machine for autonomous capabilities and switching over to the iSeries platform for the added intelligence, Osborne said.

Sandvik already has mine sites lined up for field trials of this machine in North America and northern Europe. This is on top of a planned deployment of six LH518iBs over 2023-2024 in South Australia.

Operators of these machines will benefit from either being able to carry out the battery swap from within the cab or from a remote operating station, Osborne confirmed.

“However, at this stage, there still is a requirement for a person to connect the charging cable and cooling cables,” he said.

“In the future, this will be automated as we are constantly pushing the boundaries further and pioneering new technologies in the mining industry.”

Alongside this, Sandvik is working on battery management systems to enable operators and supervisors to see what level of charge the on-board battery has and the expected time to full charge of spare batteries to enable critical decision-making around when to swap the on-board battery.

The benefits that come with these types of datasets will enable these newly automated battery-electric machines to become potentially the most productive loaders on the market, according to David Hallett, Vice President, Automation at Sandvik Mining and Rock Solutions.

“Automation and electrification go hand-in-hand,” he said. “The experience we are getting with the battery-electric equipment in the field shows that the performance of those automated machines versus those powered by diesel is already at a higher level.

“Going from drive lines to direct drive onto the wheel ends with battery-electric machines gives us a greater capability to control the equipment compared with what we had in the past. This should allow us to improve the automation of the equipment going forward.”

Bucket filling, as an example, should benefit from the integration of electrification and automation, with the two technologies allowing greater accuracy and consistency of bucket fill times and levels over the diesel-automated equivalent. The improved motion control of the machine from a hydraulics perspective is also another area Hallett highlighted.

He concluded: “These types of improvements are important and tangible benefits to highlight to customers from both an equipment performance perspective and the ability to carry out more remote operations.”

Byrnecut wins five-year contract extension at 29Metals’ Golden Grove mine

29Metals Limited says it has renewed the underground mining services agreement with Byrnecut Australia for the Golden Grove mine, in Western Australia, for a further five years, commencing from October 1, 2022.

The renewed contract extends the long-standing relationship with Byrnecut at Golden Grove, with the existing contract entered in 2017, providing continuity of operations.

The renewed contract is on substantially the same terms as the existing contract and covers development and production in the Gossan Hill and Scuddles mines at Golden Grove.

Under the renewed contract, 29Metals has formalised a commitment to identify and evaluate opportunities to collaborate on sustainability and ESG matters, reflecting 29Metals’ commitment to performance in these two areas, it said.

Golden Grove is a copper, zinc and precious metals mining operation, with the first mining discovery in the area dating back to 1971. Mining operations commenced in 1989 with the development of the Scuddles underground mine, followed by the commencement of mining at the Gossan Hill underground mine in 1996 and the Gossan Hill open-pit mine in 2012. In 2020, the mining rate at the operation was 1.44 Mt.

29Metals Managing Director & CEO, Peter Albert (pictured third from the left, shaking hands with Byrnecut Executive Chairman, Steve Coughlan), said: “After assessing a number of options, including owner mining, we are delighted to renew the agreement with Byrnecut and extend our relationship at Golden Grove. Byrnecut is a leading mining contractor in Australia and globally, and has been a key business partner at Golden Grove both before and since the 29Metals IPO.

“There is a strong alignment between our two companies from an operations, performance, and values perspective. With the new contract, we are extending that alignment to include a commitment to collaborate on sustainability and ESG matters where 29Metals will benefit from Byrnecut’s reach and experience globally.”

Byrnecut and Sandvik collaborate on new MAKO ground engaging tool

Sandvik, with the help of Australia-based mining contractor, Byrnecut, has developed a new and improved Ground Engaging Tool (GET) that, the OEM says, reduces downtime and cost-per-tonne mined.

Over a four-year period, Byrnecut has been instrumental in the development of this new system, MAKO™.

In underground mining, wear and tear is unavoidable, and nowhere is it sharper than for the buckets and the shrouds fitted to loaders.

In the most abrasive conditions, the shrouds can wear out in just a few hundred hours of work. Replacing them – especially when they are welded on – can take multiple shifts: valuable hours where the machine is out of action and productivity dented.

To speed up this process, in 2001, Sandvik introduced its Shark™ range of Blue Pointer™ ground engaging tools (GET) – becoming the first retensionable shroud system for the underground market. Blue Pointer can be summarised as shrouds using mechanical fixings that are significantly faster to replace, Sandvik says.

Even though Sandvik says the system was the market leader in underground mining, it still looked to improve upon the Blue Pointer.

With that in mind, in 2018, Sandvik set about developing a replacement, MAKO, collaborating with internationally renowned specialist mining contractor, Byrnecut.

MAKO continues the shark theme – with a Mako being a shortfin predator – and brings with it several advantages: an innovative patented locking mechanism, hammerless removal system, cast corners improvement (patented) and additional wear indicator, to mention a few.

By far the biggest improvement in terms of reducing downtime and cost-per-tonne mined can be found in the MAKO corner shrouds. Normally, corners – which have a much harder life – tend to wear out and need changing at the mid-life point, compared with the rest of the shrouds. In extreme conditions an additional two ‘half corners’ can be needed for every set of normal shrouds. But thanks to improved material and design, with MAKO there is no need for part-life replacement corners, according to Sandvik.

These improvements have been put to the test in the field, with Byrnecut instrumental in putting prototypes through their paces. The contractor trialled the concept at one of its most abrasive sites – the Capricorn copper mine near Mount Isa in Queensland, Australia.

“Sandvik came along with a team of engineers and said: ‘Right, are you willing to help us develop MAKO?”, Gary Boswell, Byrnecut’s Chief Maintenance Supervisor at the mine, said. “So, we got on board and had a good working relationship with Sandvik. Right from the start we were looking for the same outcome – to lower total-cost-of-ownership and achieve a 1:1 [corner:shroud] ratio, so that we only changed corners when we changed all the other shrouds.”

The Capricorn mine has five Sandvik loaders (LH621s) fitted with 10.7 cu.m buckets. Boswell expects to get 7,500 hours out of a bucket and, because of the aggressive nature of the rock, replaces the GET every 500-550 hours, on average. That is roughly 14 sets of MAKO per bucket life. So, making them last longer and easier to change in one go can make a significant difference to downtime and cost over that lifetime.

MAKO has not achieved its durability performance by simply adding more metal; it’s put metal where it matters. The overall MAKO system also has a very favourable weight/performance ratio, according to Sandvik.

The first MAKO GET was fitted at Byrnecut’s Capricorn site in January 2019. Despite the remote location, the buckets were monitored by Sandvik experts on a weekly basis. It soon became clear that the new range was especially durable – lasting, on average, 12% longer than the best of the rest, as well as avoiding the need for half-life corner shrouds, according to the OEM.

The first MAKO GET was fitted at Byrnecut’s Capricorn site in January 2019

“The first prototype we thought was okay, but there is still room for improvement,” Michael McCormick, the Shark Loadmaster who was hands-on with the development of MAKO, said. “The feedback we got from Gary [Boswell] and the team at Capricorn really helped us understand the issues they were having. When something cropped up, we could quickly develop a short-term ‘hotfix’, before developing a longer-term solution. For instance, we found an opportunity to improve the locking system and had to adapt the pin assembly to ensure the push-off feature was truly hammerless.

“As is natural, we had some performance issues with earlier prototypes, and it took us a couple of goes to get it right. But the ability to work in real time with Gary’s team was the key to enabling us to respond rapidly with quick fixes and validating their effectiveness.”

Boswell concluded: “Safety is paramount, and we did not want our guys hammering or using oxyacetylene to get the shrouds off. But Sandvik fixed that with the push-off feature that can handle worn-out GETs; even those with lifting lugs eroded through use. The issue of transporting heavy shrouds has also been resolved by a new lifting device, which is very effective.”

Sandvik added: “When, like Byrnecut at the Capricorn mine, you are using several hundred [GET] sets each year, the MAKO’s collective benefits add up to significant productivity, cost, time and safety enhancements. The cleve design of MAKO, perfected in the field, helps keep buckets meet their availability and productivity targets.”