Tag Archives: Caserones

Lundin Mining to acquire majority interest in Caserones copper-molybdenum mine in Chile

Lundin Mining Corporation has entered into a binding purchase agreement with JX Nippon Mining & Metals Corporation and certain of its subsidiaries to acquire 51% of the issued and outstanding equity of SCM Minera Lumina Copper Chile, a wholly owned subsidiary of JX which operates the Caserones copper-molybdenum mine in Chile.

The transaction will see JX receive upfront cash consideration from Lundin Mining of $800 million. In addition, $150 million in deferred cash consideration will be payable by Lundin Mining in installments over a six-year period following the closing date. Lundin Mining will also have the right to acquire up to an additional 19% interest in Caserones for $350 million over a five-year period commencing on the first anniversary of the date of closing.

This transaction offers Lundin exposure to a major copper mine in Chile, one that boasted a “historical estimate” of 892.1 Mt at an average grade of 0.33% Cu, containing approximately 2.9 Mt of copper in the proven and probable reserve categories and 1,595 Mt at an average grade of 0.29% copper containing 4.583 Mt of copper in the measured and indicated resource categories.

The deal, Lundin says, aligns well with its strategic goals in that it delivers a large-scale, long-life copper operation with favourable cash flow generation. This, it says, complements Lundin Mining’s existing operations and overall copper-dominant portfolio of high-quality base metal mines.

In addition to the potential to expand the known mineralisation through initiating drill programs, Lundin says the proximity of its Candelaria operations (circa-160 km from Caserones) introduces opportunities to realise additional savings and implement effective supply, logistical and management strategies.

Peter Rockandel, CEO of Lundin, said: “Upon closing of the acquisition of Caserones, we add another long-life copper mine of material size and with significant growth potential to our portfolio, in a region in which we have considerable knowledge and experience. The Caserones team has achieved meaningful operational improvements in recent years, and we will work to unlock additional upside through our strong technical resources and existing presence in the region. The initial controlling interest increases our exposure to what we believe is a growing top-tier copper mining district. We retain the option to further increase our ownership over the next few years at an attractive price. The Acquisition further solidifies Lundin Mining’s position as a growing global producer of copper as the world shifts to a lower carbon future.”

Caserones is a significant porphyry copper-molybdenum deposit in the Atacama Region (Region III) of the northern Chilean Andean Cordillera, situated between the Maricunga and El Indio belts and is part of the emerging Vicuña copper district. It is approximately 9 km from the border with Argentina, and at an altitude of approximately 4,500 m above sea level. The operation produces copper and molybdenum concentrates from a traditional open-pit mine and conventional sulphide flotation plant, as well as copper cathode from a dump leach, solvent extraction and electrowinning plant. First copper cathode was produced in 2013, followed by copper and molybdenum concentrates in 2014.

The open-pit operation uses 33 haul trucks loaded by a combination of two electric rope shovels, two hydraulic shovels and two large front-end loaders. The process plant consists of a conventional crush, grind and flotation processing with a nominal capacity of 105,000 t/d, producing both copper in concentrates and molybdenum in concentrates, as well as a solvent extraction and electrowinning plant and leaching facilities for processing oxide and low-grade sulphide ore with a production capacity of 34,500 t/y of cathode. In 2022, the concentrator plant produced 109,100 t of copper in concentrate. In addition, 15,001 t of copper cathodes and 3,100 t of molybdenum in concentrate was produced.

The tailings are managed in two separate facilities. The flotation tailings from the concentrator plant are classified into coarse and fine fractions. The La Brea tailings storage facility, approximately 9 km west of the concentration plant, receives the fines and the coarse fractions are sent to the El Tambo sand stacking facility immediately adjacent to the concentrator plant. Due diligence was performed on the tailings facilities and related infrastructure, led by Lundin Mining’s Technical Services Group.

Appian continues to flex ‘multi-faceted’ skillset in latest mining deals

Private equity firms might not be the most obvious port of call for companies in need of the technical skillsets to transition ‘projects’ to ‘mines’, but, in recent years, Appian Capital Advisory LLP has shown the industry that it has all the credentials to help with this transition.

The firm, headquartered in London but calling on expertise from across the globe, has just completed divestments of the Santa Rita nickel mine and the Serrote copper mine, both in Brazil.

Sibanye-Stillwater, the purchaser, agreed to pay Appian $1 billion, plus a 5% net smelter return (NSR) royalty over potential future underground production at Santa Rita, for the assets, with the private equity firm, in the process, pocketing a pretty profit.

In 2018, Appian acquired Atlantic Nickel (owner of Santa Rita) out of bankruptcy for $68 million and Mineração Vale Verde, the owner of Serrote, for $40 million.

It reoriented the former large-scale open-pit mine into a much more conservative – and profitable – mine able to produce around 20,000-25,000 t/y of contained nickel sulphide equivalent. It also carried out extensive drilling to showcase its underground potential, prolonging its mine life.

The plans at Serrote, meanwhile, were re-evaluated in a DFS. Having completed project construction and commissioning ahead of schedule and under budget, the mine is now ramping up to nameplate capacity of 20,000 t/y of copper equivalent.

These two divestments represent the fourth and fifth portfolio sales the company completed this year. The others included the sale of its 13.2% interest in West Africa-focused gold company Roxgold to Fortuna Silver Mines, the sale of its 0.28% NSR royalty over the large-scale Caserones copper mine in Chile and the repayment of a royalty Appian held over Peak Resources’ Ngualla rare earth project in Tanzania.

The diversity of these asset exits is indicative of how well-versed mining-focused Appian is in the sector’s ‘hot commodities’, but there is more to appreciate here than purely financial gains and well-timed acquisitions and divestments.

“People know that not all money is created equal,” Michael W Scherb, Founder and CEO of Appian (pictured), told IM. “We have a team that is able to solve specific operational challenges – we can call on specialists to solve problems on the process flowsheet side, for instance – while providing financial advice to avoid expensive streams and set assets up for profitability.”

Scherb’s words are backed up by a solid track record: seven of nine investments it has made have resulted in mine builds. Its divestments have also provided healthy returns.

The company has been able to do this by recruiting industry specialists – mining and finance – and educating them on the facets they need to succeed in both the private equity and mining world.

“People that join Appian need to be multi-faceted,” Scherb said. “We get mining folks to think like investors and vice versa,” he said.

This has seen them build a project review team populated with former consultants and an operations team full of mine personnel with operational experience.

“We then get all personnel to cross-train across these teams to avoid any siloed disciplines,” Scherb explained.

Take Santa Rita as an example of where this expertise paid off.

The company carried out a six-month due diligence process on Santa Rita, which led to the development of a more defensive and low-cost mine plan able to see the asset through nickel price peaks and troughs – in stark contrast to the plan former operator Mirabela Nickel had for the asset.

Among the operating changes implemented were the use of a smaller, locally procured equipment fleet of 40 t trucks (Santa Rita previously used Caterpillar 777 90 t and 785 137 t payload trucks), the use of shorter benches and tighter blasting patterns.

This resulted in better grade and fragmentation control, improving the feed to the crusher.

It also defined a significant underground resource base at the mine, which it will still be leveraged to thanks to the NSR royalty.

Such moves were based on exploiting the nickel sulphides at Santa Rita. This reoriented focus aligned with the industry preference for nickel tied to the battery materials space, which eventually paid off with the amount of interest in the asset.

This blend of technical and financial expertise has served the company – and any company it has an interest in – well. Backed by a long-term investment philosophy where its funds are 12 years in duration, the company can make moves aligned with the realities and timelines associated with turning assets into mines.

The next asset on the Appian books likely to move into construction-ready territory is Kalbar Operations’ Fingerboards mineral sands project, which focuses on the Glenaladale deposit, about 20 km northwest of Bairnsdale in Victoria, Australia.

Scherb said this project will be “build-ready” very soon, explaining that it is currently going through the permitting stage.

The project has the potential to be one of the world’s major producers of zircon, ilmenite, rutile and rare earths, and Kalbar is proposing an investment of over A$200 million ($148 million) in the development of a project able to produce around 575,000 t/y of heavy mineral concentrate over 15-20 years.

Scherb said Appian is keen to further pursue commodities associated with the electrification of industry, but he is aware of the premiums that may come with these deals.

“A lot of money has flooded into the battery metals,” he said. “We can be patient and are starting to look earlier stage in some investments.”

“Earlier stage” still has the potential to be producing in four- or five-year’s time, he clarified.

What’s clear is that the Appian team is gaining widespread recognition, with Scherb saying larger mining companies are starting to approach them with proposals that would see Appian gain operational control of assets, realising the firm has the right blend of “operational skill” and “value principles” to succeed.

Having acknowledged a skills shortage across the sector – one Appian is doing its bit to tackle with internship programs with universities in Canada, the UK and Australia – Scherb was confident the company’s talent would be retained and, ultimately, grow.

“In terms of talent retention, we at Appian offer experience of reviewing many different assets at different times in their lifecycle,” he said. “If you’re in-house at a mining company, you run the ruler over the same assets, stress testing them against different scenarios. We offer our teams variety that they cannot get in many places.

“At the same time, our structure means employees invest directly in companies to ensure they are correctly incentivised. This means they get to share in the profits.”

With plans to make one-to-three investments per year – along with the same number of exits – and expectations of committing its latest $775 million fund within the next two quarters, expect to hear more from Appian into 2022.

AGQ Labs to monitor and control water for Chile miners

AGQ Labs says it has been awarded three-year water control and monitoring plan contracts with MLCC Caserones and Codelco, in Chile.

Dedicated to providing laboratory analysis, advanced analysis and specialised chemical consultancy services, AGQ will service the two contracts from its new branch in Copiapó, northern Chile.

MLCC (SCM Minera Lumina Copper Chile) is owned by Pan Pacific Copper Co and Mitsui & Co SCM. It owns Caserones (pictured), a deposit in the Atacama Region of Chile, which is 162 km from Copiapó.

Codelco, meanwhile, is currently the biggest copper producer in the world by production, owning a number of mines in northern Chile.

AGC said the inauguration of its new Copiapó branch, which will provide operational coverage to other clients in the area, sees AGQ Labs Chile take a new step, “consolidating itself as a leading supplier to the Chilean mining industry”.