Tag Archives: gold

Epiroc Pit Vipers, SmartROC D65s on their way to Newmont Boddington

Automation, Explosives and blasting, Mining equipment, Mining services, Precious metals, , , , , , , , ,

Epiroc says it has won a large order for surface mining equipment from Newmont in Australia, with a fleet of Epiroc Pit Viper 231 and SmartROC D65 drill rigs set to be used at the Boddington gold and copper mine in Western Australia.

The rigs, which will be operated tele-remotely, will replace an older fleet of Epiroc equipment.

The equipment order is valued at about SEK335 million ($32 million) and was booked in the September quarter of 2024. Epiroc will also provide service on the machines.

“We have a long-standing partnership with Newmont, which is on the forefront of advanced mining operations,” Helena Hedblom, Epiroc’s President and CEO, said. “We are happy to support them as they continue to make their operations as safe and productive as possible.”

Chris Dark, Newmont’s General Manager for the Boddington mine site, says: “Newmont and Epiroc have had a long-term relationship on the Boddington site. This order recognises and continues this successful relationship that has enabled the success of the Boddington drilling operations over the life of the mine. Together we look forward to unlocking the long-term future of the Boddington site, which is recognised globally as a Tier 1 gold asset.”

The Pit Viper 231 rotary blasthole drill rig is a flexible workhorse that can be configured in many different ways for a wide range of rotary and down-the-hole drilling operations, Epiroc says. The SmartROC D65 rig consistently delivers high-quality blastholes with accuracy and precision. Both machines are built tough, loaded with intelligent features and very fuel efficient, the OEM claims.

Delivery of the fleet will commence immediately and will continue into the first half of 2025.

Wärtsilä to supply engines, auxiliary equipment for Boto gold mine power plant

Mine operation news, Power supply for mines, Precious metals, , ,

Wärtsilä will supply the engines and auxiliary equipment for a power plant being installed at the Boto gold mine in Senegal.

The order, which was booked by Wärtsilä in the March quarter of 2024, has been placed by Africa Power Services (APS), the France-based main contractor for the engineering, procurement and construction of the power plant. The mine has been recently acquired by Managem, an international mining group with operations in eight countries across Africa.

Romain Darracq, Head of Sales Support at APS, said: “The mine is remotely located and has no connection to the grid. This power plant is therefore crucial for its operations, and we needed to find a partner capable of providing reliable supply of electricity. Wärtsilä’s track record is outstanding and they were offering the best equipment and best delivery times for this fast-track project.”

The 17 MW power plant will operate with six Wärtsilä 32 engines to be delivered on an engineered equipment (EEQ) basis.

Sameer Poredi, Business Development Manager, Lifecycle at Wärtsilä Energy, said: “The configuration provides good flexibility and optimal performance of the power plant under varied load demands. Wärtsilä has a strong presence in Africa with its regional setup in Dakar effectively supporting the customers’ operations throughout the lifecycle of their power plants.”

The Wärtsilä 32 engine generating set has established a reputation for reliability during 30 years of successful operations, delivering more than 8,000 MW of energy to customers around the world. Its fast-starting flexibility supports the integration of intermittent supplies of renewable energy, such as wind and solar, into power systems by enabling efficient grid balancing.

The equipment deliveries are targeted to be completed by December 2024, and the plant is expected to be commissioned during the March quarter of 2025.

Railveyor stakes its energy-efficiency, opex cost claims in latest Agnico Eagle whitepaper

Automation, Environmental, Mining equipment, Mining industry recognition, Power supply for mines, Sustainable mining, , , , , , , ,

Agnico Eagle Mines Limited has revealed its findings on the efficiency and environmental impact of the Railveyor system implemented at its Goldex mining complex in Quebec, Canada, with the whitepaper, published by Railveyor and Agnico Eagle, detailing reduced operational costs, enhanced safety and greenhouse gas emissions reductions as some of the major outcomes of the installation.

Goldex mine, an underground gold operation in Val d’Or, faced logistical challenges due to its deeper zones and low-grade ore. To address these, Agnico Eagle integrated the Railveyor system into its operations in 2017, replacing traditional diesel truck haulage with this advanced all-electric solution. The results have been transformative, according to the whitepaper.

According to the miner’s internal studies, the Railveyor system has achieved up to a 39% reduction in mine-wide emissions compared with diesel trucks, a significant step towards the company’s commitment to achieving net zero by 2050. The system’s energy efficiency was also validated by a study from NRCan-CanmetMINING, confirming that the Railveyor operates within 6% of its expected energy usage. With its low operational costs – reducing operating expenditure by as much as 75% compared with truck haulage – Railveyor has proven itself as a cost-effective, sustainable alternative for material transport in mining, Railveyor says.

Based on CanmetMINING’s calculations, the Goldex Railveyor system requires 0.989 kilowatt-hours to move one tonne of ore one kilometer. Factoring in Quebec’s average electricity price at the time of this publication, the estimated cost is less than $0.07/tonne-km.

Christian Lessard, Maintenance Superintendent at Goldex, said: “Goldex Railveyor has been optimised since 2017, resulting in strong production in recent years. The system integrates the latest technologies like LTE networks and AI, operating in line with theoretical energy consumption models. The stability and predictability of electrical energy costs, as opposed to fossil fuels, further contribute to the overall benefits.”

Tas Mohamed, interim CEO of Railveyor, said: “The success of the Railveyor at Goldex highlights the importance of collaboration between our team and Agnico Eagle Mines. This partnership has demonstrated that Railveyor is not just a viable alternative to traditional methods but a superior one in terms of safety, cost, and environmental impact.”

Charles Gillies, Chairman of Railveyor and Managing Director at Resource Capital Funds (RCF), a global critical minerals and mining alternatives investment firm, added: “We are proud to have supported Railveyor within RCF Innovation II in bringing this innovative technology to market. The positive impact at Goldex underscores the value of investing in sustainable and transformative mining solutions that can help enable the energy transition and meet the mining industry’s challenges today and in the future.”

As the mining industry continues to push towards sustainability, the success of the Railveyor system at Goldex serves as a benchmark for other operations, Railveyor says. “With its ability to reduce emissions, increase safety and lower costs, Railveyor is setting new standards in mining.”

Weir to supply Enduron HPGR for De Grey Mining’s Hemi gold project

Comminution of minerals, Mineral processing, Mining equipment, Precious metals, , , , , , , ,

Weir has been awarded the contract to supply a large ø2.4m x 2.25 m Enduron® HPGR (high-pressure grinding rolls) for De Grey Mining’s flagship Hemi gold project in the Pilbara of Western Australia.

Hemi has a mineral estimate of 10.5 Moz and at full capacity, the processing plant will have a nameplate throughput of 10 Mt/y.

Peter Holmes, Project Director of De Grey Mining, said: “De Grey Mining is pleased to partner with Weir on one of its key long lead items for its Hemi Gold Project and appreciates Weir having a local service facility to provide the required support to our site and the region.”

Bjorn Dierx, Global Product Manager for Enduron HPGRs, said: “Our partnership with De Grey Mining further expands our footprint in sustainable comminution. Our proven track record of developing highly engineered solutions for the industry, together with our capability to partner with our customers to bring projects to life, ensures that De Grey Mining will be in good hands to achieve its productivity, sustainability and project execution targets.

“The Hemi gold project will benefit from Weir’s state-of-the-art Enduron HPGR technology, which delivers operational flexibility, grinding efficiency and equipment availability. Importantly, Enduron HPGRs also provide significant improvements versus traditional tumbling mill technology with energy savings of up to 40% and in turn, a lower carbon footprint. This will be the fifth, similar-sized Enduron HPGR in the Pilbara region alone, which is a testament to its credibility in high capacity, hard-rock grinding.”

Weir recently opened its Port Hedland Service Centre, strategically located to support its customers in the Pilbara region in Western Australia. The centre features facilities for Enduron® HPGR servicing, including tyre roller assembly, and will allow De Grey Mining to benefit from product training in close proximity to the mine site.

Kristen Walsh, Regional Managing Director of Weir’s Minerals Division, said: “This win further underscores Weir’s commitment to making mining more sustainable and demonstrates the substantial opportunity that can be made to CO2 emissions reduction when choosing an energy-efficient technology in a large greenfield project.”

MACA secures five-year ‘first right of refusal’ agreement with Emerald Resources

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MACA has announced a five-year agreement with Emerald Resources NL to continue partnering on current and all future mine developments.

Under this agreement, MACA has earned the first right of refusal to deliver a full range of mining services, construction and establishment works for future Emerald Resources operations.

This follows a 2020 agreement between the two companies that has seen MACA supply earthmoving equipment and conduct contract mining services at Emerald’s Okvau gold project in Cambodia.

Emerald said the scope of this pact covers a full range of mining services including load & haul, drill & blast, underground mining (development & production), crusher feed, tailings dam construction and establishment works.

Australia West Group Executive, David Greig, said: “Founded upon MACA’s safe delivery of strong operational results for Emerald Resources at the Okvau gold project in Cambodia, this agreement is a testament to our long-standing reputation in the market as a trusted partner. With a substantial pipeline of developments ahead, it signals an exciting period of growth for both businesses across Australia and Cambodia, and a significant next step in our partnership.”

Emerald has a number of projects in both Cambodia and Australia.

MACA’s combined breadth of scope and international experience as part of the Thiess Group, including PYBAR, recently acquired for its underground capabilities, strongly positions the company in the global market, it says.

5G underground networks receive Newmont’s seal of approval following Cadia trial

Automation, Base metals, Communications in mining, IoT, Mine operation news, Mining services, Precious metals, , , , , , , , , , , ,

Newmont Corporation is expanding its use of next generation 5G wireless networks to improve safety in underground mining following trial results from its Cadia mine in New South Wales, Australia.

In February last year, Newmont (Newcrest as it was then) announced a trial of 5G in partnership with Ericsson and Telstra Purple at its Cadia mine – one of the largest underground gold-copper mines in the world.

Before the trial, Cadia was limited to upload speeds of 20-30 megabits per second (Mbps) using Wi-Fi to operate autonomous equipment such as ore loaders and remote-controlled mining machines.

These Wi-Fi connections were unreliable and unpredictable when under load, according to Newmont. There was insufficient capacity to operate the required number of machines in the one area at the same time, particularly with the amount of video upload involved, and automation safety stops were regularly falsely triggered due to network packet loss.

Using Ericsson Private 5G, Newmont was able to demonstrate the ability to achieve upload speeds of around 90 Mbps along access drives and declines throughout the underground complex, and 150 Mbps upload and 500 Mbps download on all-important extraction drives, it says.

The connections underground were found to be persistent and highly dependable, resolving historic limitations experienced with Wi-Fi and providing the consistent performance essential for remote control and autonomous mining systems.

Newmont Chief Safety and Sustainability Officer, Suzy Retallack, said: “The trial results show the extraordinary potential of 5G to improve safety, increase the number of machines that can be operated on a single network and boost production efficiencies in underground mining.

“These trials are part of the new frontier of technology in mining – using innovation to make our people safer and our mines more productive.”

Newmont will now use 5G to roll out more autonomous fleet like drill rigs, graders and auto haul trucks as part of future mining operations, relying on 5G’s unique capacity and capability to facilitate and streamline operational capabilities while deploying additional safety systems like radars and collision avoidance to improve overall mine safety systems, it says.

Head of Private Cellular Networks from Ericsson, Manish Tiwari, said: “5G is enabling rapid global transformation of industry, supporting digitalisation and movement towards automated, more efficient, and safer operations across a number of sectors.

“Ericsson is proud to be partnering with Newmont on demonstrating the potential of 5G to the global mining sector.”

Trialling 5G New Radio (NR) technologies on the surface at Cadia as part of the same initiative also demonstrated that new 5G innovations, such as 64T64R Massive MIMO, beamforming and beam-steering provided a leap forward in available throughputs at the extended distances found in surface operations.

Newmont says it uses technology to make workers safer while improving efficiency. On the basis of the trial, 5G now has a firm place in Newmont’s communications strategies for Cadia and its other Tier One underground and surface mines across the world.

Following support for the Cadia 5G trial from the Australian Communications and Media Authority (ACMA), Newmont has now applied to ACMA for Area Wide Licenses to extend and embed Newmont’s use of 5G technology across its Australian operations.

Newmont is now planning to expand the use of 5G networks across its global network of Tier One underground gold-copper mines.

Luca Mining looks to contractor Comvini for Campo Morado production boost

Base metals, Mine operation news, Mining services, , , , , ,

Luca Mining Corp has engaged Cominvi, S.A. de C.V. to carry out core mining operations at the company’s 100% owned Campo Morado copper-zinc-gold mine in Guerrero state, Mexico.

Cominvi is, Luca Mining says, one of the largest and most respected mining contractors in Latin America with a particular expertise in underground mining. It has a well-earned reputation for delivering excellent results with the highest degree of safety and responsibility.

Working with Cominvi will allow Luca to quickly increase production at Campo Morado and will provide cost-effective access to newer mining equipment for the company’s ongoing operations. Luca Mining added: “The addition of Cominvi to our operations team will help ensure that Campo Morado can meet and exceed its daily production targets and will provide a rapid path to further increases in production and revenues without incurring significant capital expenditures. ”

Dan Barnholden, CEO of Luca Mining, said Comvini bring incredible expertise and experience to Campo Morado and will greatly enhance the company’s operational flexibility.

“The timing of this decision is fortuitous as Cominvi has just completed a major mining project nearby and, therefore, mobilisation will occur very quick,” he said. “We intend to increase our mill throughput from the current 1,400-1,600 t/d to 2,000 t/d by year end and continue to push forward to 2,400 t/d mill rate during 2025. These achievements, along with the company’s previously announced Campo Morado Improvement Project to increase metallurgical recoveries and produce higher value concentrates, will have a material positive impact on the company’s production, costs and cash flow.

“Cominvi’s seasoned team will be an important factor in the execution of these plans.”

Luca Mining is a diversified Canadian mining company with two 100%-owned producing mines in Mexico within the prolific Sierra Madre Mineral Belt. The company produces gold, copper, zinc, silver and lead from these mines that each have considerable development and resource upside.

Draslovka’s glycine leaching tech to be tested on gold, nickel tailings at Windarra

Base metals, Environmental, Mine operation news, Mineral processing, Mining services, Precious metals, Sustainable mining, , , , , , , , ,

Draslovka a.s. subsidiary Encore Minerals, a company established with the specific aim of progressing waste to value opportunities, has entered into an agreement with Poseidon Nickel to retreat and monetise gold and nickel tailings in Western Australia.

Draslovka’s proprietary Glycine Leaching Technology (GLT), comprising the GlyCat™ process for precious metals and GlyLeach™ process for base metals, will be an enabler for the extraction of
realisable value from Poseidon’s gold and nickel tailings at its Windarra property and potentially from a third-party tailings resource at nearby Lancefield (the Windarra Tailings project), Draslovka says.

Previous metallurgical test work for the Windarra Tailings project had shown potential improvement in recoveries and costs for the site’s gold resources. The test work also established the potential for a technical, economically viable and low-intensity process for recovery of nickel from nickel tailings. A previous feasibility study for the gold resource using conventional cyanidation showed net operating cash flow of A$30.6 million ($19.9 million), a net present value (8% discount) of A$21.7 million and an internal rate of return of 50.6%, assuming a gold price of A$2,500/oz.

The next step is to undertake a technical program to optimise the project with both the gold and nickel resources, which will lead to an updated feasibility study and a final investment decision. If
successful, the project will lead to the construction of the first GLT processing plant for tailings.

Ivor Bryan, Chief Technology Officer of Draslovka Mining Process Solutions, said: “We are excited to play an integral role in enabling the retreatment of the gold and nickel tailings at the Windarra Tailings project by supplying GLT, which has been developed to extract precious and base metals.

“GLT is revolutionary for the mining industry. It has the potential to save mining companies billions of dollars by significantly reducing processing costs, enhancing a mine’s sustainability profile, extending mine life by lowering the cut-off grade and unlocking value hidden in a mine’s tailings. I believe the results at Windarra will be a powerful example of how GLT is a simple yet very effective means to retreat and monetise tailings.”

Agnico Eagle to establish exploration decline, shaft at Upper Beaver

Automation, Base metals, Mine shafts and equipment, Mineral project development, , , , , ,

Agnico Eagle is investing $200 million over the next three years to “further study and de-risk” its Upper Beaver project in Ontario, Canada, with plans to establish both an exploration decline and exploration shaft.

An internal evaluation of the Upper Beaver project was completed in June 2024. Based on this evaluation, the company believes Upper Beaver has the potential to produce an annual average of approximately 210,000 oz of gold and 3,600 t of copper, with initial production possible as early as 2030.

Over an expected 13-year mine life, total payable gold and copper production is expected to be approximately 2.8 Moz and 46,300 t, respectively, based on a 5,000 t/d production rate. Estimated total cash costs per ounce on a by-product basis and all-in sustaining cost per ounce on a by-product basis are expected to be approximately $592 and $733, respectively.

“In addition, the project has the potential to unlock significant exploration potential at depth and within satellite deposits in the company’s Kirkland Lake camp,” Agnico Eagle said.

At Upper Beaver, approximately $50 million is forecast to be spent in 2024 related to the construction of surface facilities, site preparation and the excavation of the shaft collar. Preparatory site work commenced in early 2024 and approximately $15 million was spent in the first half of 2024.

With the total $200 million investment, the company intends to develop an exploration ramp and an exploration shaft to depths of 160 m and 760 m, respectively, to establish underground drilling platforms and to collect bulk samples from the two most representative geological zones of the Upper Beaver deposit. The exploration ramp and exploration shaft will be sized to accommodate the potential production phase and are included in the initial capital expenditures estimate of approximately $900 million. Excavation of the ramp and shaft sinking are expected to start in the second half of 2025.

Upper Beaver is in the township of Gauthier, in north-eastern Ontario, approximately 25 km to the east of the town of Kirkland Lake. The district has a continuous history of mineral exploration and mining spanning more than 110 years and with an aggregate of over 42 Moz of gold produced by various producers.

The mineralisation has been defined along a 400-m strike length from surface to a depth of 2,000 m and it remains open at depth. Total indicated resources are currently 30.9 Mt at 3.47 g/t Au and 0.23% Cu, plus 3 Mt indicated at 4.13 g/t Au and 0.36% Cu.

The mining strategy developed for the Upper Beaver project is to mine the deposit mainly by conventional underground methods, although a small portion (approximately 10% of the mineral resource) will be mined via an open pit. The underground and open-pit mines are expected to be developed within the same time frame.

Open-pit operations will employ conventional methods of drilling, blasting and loading by excavator and wheel loader, with material haulage by truck to the various stockpiles, waste dump or directly to a crusher.

Under current scenarios, production from the open pit is expected to occur from 2030 to 2034 at an average rate of approximately 2,000 t/d, of which 500 t/d will be stockpiled for later processing.

Current scenarios contemplate underground access through a main decline ramp as well as a shaft that is 1,220-m deep and 6 m in diameter. Four main stations are planned along the shaft, including a loading station at the bottom of the shaft. Ore and waste above 430-m depth will be hauled to surface by trucks via the ramp. Ore and waste below 430-m depth will be managed mainly through an ore and waste pass system and skipped to surface via the shaft.

The underground mining concept is based on a long hole open stoping method, with sublevels every 30 m and with stopes to be backfilled with paste and waste rock. The project is expected to use a combination of conventional and automated equipment, similar to what is currently used at the company’s mines in the region. Production from underground, via ramp and shaft, could begin as early as 2030 and ramp-up to an average rate of approximately 4,500 t/d in 2035.

The plant is anticipated to use a conventional milling process, including a gravity circuit and a copper flotation circuit, with a design capacity of 5,000 t/d, an average total gold recovery of 95% and an average copper recovery of 81%.

Tailings will partly be returned underground as paste fill, with the remainder being disposed on a dry stack tailings storage facility.

An agreement with local indigenous communities and environmental permits are in place for the advanced exploration phase of the project, including for the development of an exploration ramp and an exploration shaft and the collection of two bulk samples. Negotiations with indigenous communities are ongoing to establish an agreement for the production phase if a development decision is made. The company is also advancing environmental impact assessments required for the Federal and Provincial approvals and permits that will be required for the construction and production phases following a development decision.

Kaiser Reef brings in Gekko Wolff Batch Centrifugal Concentrator to improve gravity recoveries at gold mine

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Kaiser Reef Limited has commenced installation of a Wolff Batch Centrifugal Concentrator (BCC) gravity circuit and ancillary equipment at the Maldon gold processing plant as part of an upgrade program at its operations in Victoria, Australia.

The Maldon plant is just 3 km from the company’s Union Hill Mine, which produced 2.1 Moz of gold, and has a processing capacity of 250,000 t/y, currently operating at between 20% and 30% of its full capacity.

The Wolff BCC comes with features such as a segmented bowl and a rotary union tailored for dirty water applications. These advancements minimise maintenance needs (eliminating the need for cranes during bowl changes) and reduce the demand for clean water, thereby reducing both capital and operational costs, according to manufacturer Gekko Systems.

The gold gravity circuit at Maldon will collect the unusually high concentration of coarse gold observed from the company’s A1 goldmine after the SAG mill. This will enhance recovery by collecting coarse gold separately and earlier from the leach feed than through the current mill flowsheet, the company says.

Kaiser has previously seen gold “held up” withing the processing plant because of gold’s very soft and malleable nature and high density. This has required regular mill liner removal to collect the entrained gold. The company expects this initiative to help enhance and smooth cash flow and also improve overall gold recovery. This equipment is currently being installed and should be operational by early August.

In addition, Kaiser has purchased a previously used Terex cone crushing unit to reduce the size of the crushed ore product from the jaw crusher prior to feeding ore into the SAG mill. The cone crusher further reduces the average rock size delivered by the Terex crusher currently in operation from 75 mm down to below 25 mm.

“Reducing the rock size reduces the time required to grind ore in the ball mill and thereby reduces the company’s energy and power costs,” Kaiser Reef says. “This will increase the effective treatment capacity rate, leading to greater operational efficiency and reduced processing costs. The calculated payback period is approximately eight months.”

These upgrades to the fully permitted Maldon processing plant advance the company’s strategy to significantly ramp up production and cashflow from its Victorian gold projects, particularly the high-grade A1 Gold Mine, Kaiser Reef says.