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Flawed diamonds may be the key to quantum internet

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New research by a team at Japan’s Yokohama National University found that flaws in diamonds —atomic defects where carbon is replaced by nitrogen or another element— may offer a close-to-perfect interface for quantum computing, a proposed communications exchange that promises to be faster and more secure than current methods

In a paper published in the journal Communications Physics, the group explains that as they developed their proposal, they also found a major problem: the flaws, which are known as diamond nitrogen-vacancy centers, are controlled by a magnetic field, which is incompatible with existing quantum devices.

Having noticed this issue, they decided to develop an interface approach to control the diamond nitrogen-vacancy centers in a way that allows direct translation to quantum devices.

By combining the entangled emission demonstrated in this study with the previously demonstrated quantum teleportation transfer from a photon to a nuclear spin in diamond, researchers will generate quantum entanglement between remote locations based on quantum teleportation. (Image by Yokohama National University).

“To realize the quantum internet, a quantum interface is required to generate remote quantum entanglement by photons, which are a quantum communication medium,” Hideo Kosaka, one of the study’s authors, said.

According to Kosaka, the promised quantum internet is rooted in more than a century’s worth of work in which researchers determined that photons are both particles and waves of light simultaneously—and that their wave state can reveal information about their particle state and vice versa.

“More than that, the two states could influence each other: pinching the wave could bruise the particle, so to speak. Their very nature is entangled, even across vast distances. The aim is to control the entanglement to communicate discrete data instantaneously and securely,” he said.

The scientist pointed out that previous research has demonstrated this controlled entanglement can be achieved by applying a magnetic field to the nitrogen-vacancy centers, but a non-magnetic field approach is needed to move closer to realizing the quantum internet.

His team successfully used microwave and light polarized waves to entangle an emitted photon and left spin qubits, the quantum equivalent of information bits in classical systems. These polarizations are waves that move perpendicular to the originating source, like seismic waves radiating out horizontally from a vertical fault shift. In quantum mechanics, the spin property—either right- or left-handed—of the photon determines how the polarization moves, meaning it is predictable and controllable. Critically, according to Kosaka, when inducing entanglement via this property under a non-magnetic field, the connection appears steadfast against other variables.

“The geometric nature of polarization allows us to generate remote quantum entanglement that is resilient to noise and timing errors,” Kosaka said.

The researcher and his team now plan to combine this approach with a previously demonstrated quantum information transfer via teleportation to generate quantum entanglement, and the resulting exchange of information, between remote locations. The eventual goal is to facilitate a connected network of quantum computers to establish a quantum internet.

“The realization of a quantum internet will enable quantum cryptography, distributed quantum computation and quantum sensing over long distances of more than 1,000 kilometers,” the expert said.

Mining.com

Could this be gold’s year to shine?

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For gold bulls, these are frustrating times. In rand terms, gold bumped up a mere 4,1 percent in 2021, but dropped 4,3 percent in US dollars.

Investors lavished with triple digit returns in cryptos may find this rather unappealing, but gold tends to do well in times of higher inflation, such as is expected in 2022.

The Gold Outlook 2022 report from the World Gold Council gives a glimmer of hope to those holding, or planning to acquire, gold in their portfolios.

“Gold has historically performed well amid high inflation. In years when inflation was higher than 3 percent, gold’s price increased 14 percent on average. Further, in the long run, gold has outpaced US inflation and moved closer in pace to money supply, which has significantly increased in recent years,” says the report.

The US Federal Reserve has indicated that it may hike interest rates three times this year while reducing the size of its balance sheet, but the World Gold Council cautions that previous cycles where interest rates were hiked ended up being less aggressive than originally expected.

“Financial market expectations of future monetary policy actions — expressed through bond yields — have historically been a key influence on gold price performance.

Consequently, gold has historically underperformed in the months leading up to a Fed tightening cycle, only to significantly outperform in the months following the first rate hike,” adds the Council.

Other central banks are less enthusiastic about raising interest rates, which could support a stronger US dollar. Steady or decreasing interest rates may underpin gold demand across the world. The council warns that inflation may linger a while longer than expected due to Covid-19 related supply chain disruptions, tight labour markets resulting in more people leaving their jobs for better paid opportunities, high commodity prices and higher average savings which have contributed to lofty valuations in various financial markets.

Stock market pullbacks remain a risk as new Covid-19 variants manifest in an environment of rising geopolitical risks and frothy equity valuations incubated in an ultra-low interest rate environment. Gold is likely to face headwinds from higher nominal interest rates and a potentially stronger US dollar in 2022. Offsetting these headwinds are high, persistent inflation, market volatility linked to Covid-19 and geopolitical events, and robust demand from sectors such as central banks and jewellers. – Moneyweb.

Illegal mining along railway lines cause for concern

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THE National Railways of Zimbabwe (NRZ) has expressed concern over the increase in illegal mining activities along its railway lines amid fears that this may cause accidents.

Gold panners have of late been digging around the NRZ properties and the most affected areas are Esigodini, Cement Siding, Concession, Tatagura, Bindura, Mazoe, Jumbo Siding,

Kwekwe, Shurugwi, Gedo, Chomvuri and Adams.

NRZ spokesperson Martin Banda said 18 650m of rail has been affected by illegal goldpanning activities that have seen some encroachment into rail leading to the ballast on tracks falling into the pit while some panners were digging uncomfortably close to NRZ houses.

“Let me hasten to mention that there are some people who are seen digging for gold along the railway lines as well as under the railway lines while some are ploughing along the railway line, a move which is highly dangerous and risky to the movement of passengers and freight trains throughout the country, particularly during the rainy season as it causes wash ways that have resulted in the derailment of trains,” said the spokesperson.

He said they arrested 14 illegal gold miners in a joint anti-gold panning operation in December last year.

The 14 were remanded in custody and are set to reappear in court this year. He said there was a surge in the illegal gold mining actives along railway lines and called for collective action to stop the illegality.

He noted that the parastatal continued to face operational and revenue generation challenges and the illegal mining activities along railway lines and reserve land was leaving NRZ in a position where it would be unable to pick up business on offer and compete against road transport in even terms.

Mr Banda appealed to members of the public to desist from such retrogressive acts and report such cases to the nearest police or railway security stations.

“Indeed, gold panning and acts of vandalism are a danger to the nation. We appeal to the general public to desist from such retrogressive acts and report such cases to nearby law enforcement agents,” he said.

 

 

 

 

The Sunday

Experts Decry Policy Vacuum In Zim’s Mining Sector

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EXPERTS say the lack of a clear national policy that guides mining sector legislation is as a major setback in achieving sustainable development in Zimbabwe.

The 2022 National budget channelled ZW$3 billion to finance the amendment of Mines and Minerals Act and operationalisation of the mining cadastre system, among other cocktail measures.

But experts say lack of finalisation of the amendment to the archaic law remains a major concern.

Mineral economist and chairman of the Institute of Mining at the University of Zimbabwe Lyman Mlambo told NewZimbabwe.com there is laxity within Government and political leaders to establish a National Minerals Development Policy (NMDP) due to vested interests.

“The policy vacuum is a critical issue that needs to be addressed and the problem that we have is lack of political commitment to complete a NMDP,” Mlambo said.

He added: “We had a draft in 2013 and up to now we are still talking of developing a policy. Some people are benefiting from existence of a policy vacuum and absence of restrictive legislations needed to ensure mining benefits accrue to the nation rather than to individuals. People that are supposed to make those policies are also players in the mining sector.”

Mlambo noted lack of a policy cripples the country’s ability to develop necessary legislations in line with current trends.

“There is a policy vacuum both at the NMDP level and also at mineral specific levels. A policy entails the country’s valued principles, objectives and policy statements that are milestones to be achieved. NMDP policy has been long drawn as it started around 2010 and we got our first draft in 2013.”

“It is my hope all we will probably have one by the first half of 2022. Sluggish pace in finalising NMDP is a drawback leaving several acts governing the mining sector without any policy foundation. The Diamond policy , Precious Stones Act and other acts are baseless because there is no a policy that provides a general guideline of such legislations,” said Mlambo.

An academic and Director of Zimbabwe Natural Resources Dialogue Freeman Bhoso concurred with Mlambo on the need of a watertight policy to guide legislation in Zimbabwe’s mining sector saying: “A policy is important because it shapes up the legislations. Legislation gives a framework on how to maximise, protect national interest, integrity and citizens from exploitation in the process of attaining sustainable development. If we have a defective legislative framework, it means we will also have deficits and gaps in terms of effectiveness.”

“For us to maximise, harness and ensure that the country achieves sustainable development from natural resources exploitation there is need to have a watertight legislative framework. This will safeguard the country and citizens from being prejudiced from benefiting from natural resources exploitation,” he added.

NewZimbabwe

Evicted SMM ex-Workers Accuse Gvt Of Abusing Them

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FORMER Shabanie Mashaba Mines Holdings SMM workers who thought they had found relief in government intervention when it stopped their evictions in 2018, are now crying foul after their employer has resumed the evictions in full force.

The ex-workers who are demanding their outstanding salaries have been refusing to leave company houses since 2012 but, the company now claims that outstanding wages were used as rentals for their stay since they were no longer company employees.

Some ex-employees were served with eviction notices which also shown that they are the ones who now owe SMM Holdings.

One of the former workers who spoke on condition of anonymity in fear of victimisation said he was disappointed by lack of intervention from government, despite having been assured in 2018 that there were no more evictions which will take place.

“Everyone thought the struggle was over since Minister Chitando told us at a rally that as former workers we now own the houses since the company wasn’t capable of settling its debt with us. What amazes us is that soon after elections evictions started and no one seems bothered to reprimand the company from carrying out the evictions and we feel like we were used for,” the worker said.

Speaking during the Zanu PF rally at Maglas stadium in 2018, Chitando promised former employees that no more evictions would take place in Mashava and Zvishavane, but this has not been enforced.

Chitando was not available to comment on the developments since he didn’t answer calls made to his mobile phone and texts sent to him until the time of publishing.

Zimbabwe Diamond and Allied Minerals Workers Union Secretary General, Justice Chinhema said the government was letting them down in their pursuit for justice.

“Our challenge is that the government itself. Initially government told company management not to evict us, demanding to know how the ex-workers became tenants yet they were staying in the houses waiting for their outstanding salaries,” Chinhema said.

“Government is the one that told former workers to stay in the houses and made it clear that no one owed the company, so we are waiting to be given what we are owed but nothing concrete is being done yet workers are being evicted,” Chinhema said.

The union has been calling for the removal of company administrator Afarus Gwaradzimba whom they accuse of being illegitimate.

Gwaradzimba’s return to the helm of SMM Holdings torched a storm and his management has fallen out of favor with ex-workers for evicting them, despite having served the company for many years and being owed millions of dollars.

NewZimbabwe

Scrap metal rush creates circular economy

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IN the City of Bulawayo, a struggling steel industry has in the past few years found relief in small-scale producers. These producers have contributed to a rush for scrap metal that has brought problems of its own, including a spike in vandalism and metal theft.

Steel manufacturing companies once thrived in Zimbabwe’s second city, which used to be celebrated as the nation’s industrial hub.

But over the past decade, hundreds of companies have shut down citing high energy costs and water shortages, reducing the city’s once billowing furnaces to a silent wasteland of derelict structures.

In recent years, small foundries and steel producers, including two owned by Chinese companies — Huamin Steel and Naisonale Investments — have set up in Kelvin West, an industrial area of the city where bargain hunters can source anything from car parts to coffins to a lunch consisting of cow heels.

Naisonale Investments, which employs about 150 workers, recycles scrap to supply steel products such as beams to the domestic construction sector. At peak output, the company produces 30 to 40 tonnes of steel per day, according to Pritchard Murayirwa, the general manager.

A tour of the company’s premises revealed a busy production cycle running 24 hours per day, in which scrap metal is sorted and prepared for the furnaces, ready to make new steel products. Steel is considered by the government to be a critical industry, so companies such as Naisonale have been exempted from power outages which have crippled other industries in Zimbabwe.

Their success has, however, caused headaches for other sectors in Bulawayo and the wider nation.

Increased steel crime

The growth in operations at steel companies such as Huamin and Nasionale has created strong demand for scrap steel, which may have inadvertently contributed to a rise in vandalism, including of State-owned enterprises such as the struggling National Railways of Zimbabwe (NRZ).

Theft cost the railways more than US$3,5 million last year, according to Martin Banda, a company spokesperson.

“The railways continue to lose infrastructure to vandalism and, from what we gather, the vandalised steel is sold to scrap yards where it is recycled and turned into other steel products,” Banda said.

It’s not only steel items that are being sought in this new rush for scrap. “Brass bearings in our trains are also being targeted because we are told brass handles are always in demand with funeral parlours for coffin handles,” Banda said.

There is a certain irony in the railway system falling victim to vandalism, as Bulawayo Provincial Affairs minister Judith Ncube recently pointed out.

“NRZ locomotives once transported key raw materials for the foundry sector,” she told a meeting of the Zimbabwe Institute of Foundries (ZIF) last month.

At the Naisonale Investments scrap heap, parts from haulage trucks and railways, such as tracks and train components, can be found, before they are transferred to the furnaces and cast into new steel products.

According to its manager, a tonne of scrap metal sells for US$150, but dealers can get up to US$300 depending on the day’s market price.

“We get scrap from big companies, some of whom have abandoned their operations, but also from individuals who have scrap to sell. No one can say we are promoting vandalism,” said Murayirwa.

One scrap metal dealer located close to Naisonale Investments said he sells most of his scrap to the Chinese companies in Bulawayo.

Some also goes to buyers in the small town of Redcliff, a little over 200km southeast of Bulawayo and home to the perennially troubled Zimbabwe Iron and Steel Company (Ziscosteel). Kwekwe and Redcliff have in recent years seen the establishment of several small foundries amid continuing efforts by government to revive the steel sector.

In a country where, according to international aid agencies, millions survive on less than a dollar a day, scrap metal collection has emerged as a potential source of income. But while this presents an economic lifeline for many, the prices offered for scrap by new companies in the domestic steel sector appear to have provided an incentive for vandalism and theft.

Local industry leaders have also complained about government issuing permits to companies that allow them to export scrap metal to neighbouring countries, and circumvent an official but loosely enforced ban.

Illegal exports by unlicensed dealers also present a significant problem. These leakages, sanctioned or otherwise, deprive the domestic industry of much-needed materials, and may have caused Zimbabwe losses as high as US$5 billion over the past two decades, according to the country’s mining minister.

The fluctuating availability of scrap metal presents challenges that exports only aggravate, according to Itai Zaba, president of the ZIF.

He is clear about the action needed: “We want a [total] ban on exports, to supply local demand.”

Zaba also notes the particular difficulties faced by the railway industry, whose parts were made in foundries, which has been “cannibalised” by scrap theft.

According to local media reports, vandalism of everything from transport parts to power and telephone infrastructure has likely cost the country many millions of dollars, amid a host of economic and political challenges over the past two decades.

Backyard workshops

Zimbabwe’s downward economic spiral has led to an unintended circular economy where anything from plastic bottles to soda cans now provide a source of income. Amid the uncertainty about supply of steel and related alloys, small-scale metal workers have found ways to create a living for themselves, in a country where millions are jobless.

Lowani Ncube, who makes aluminium pots at one of the thriving informal backyard workshops in Bulawayo’s Renkini area, says he buys and melts scrap from car breakers.

“The Chinese businesses who operate in the city deal with heavy metal that requires a lot of electricity [to melt],” he said. “For small metal workers like us, we melt our scrap using coal.”

While larger businesses such as the city’s Chinese-owned operators work with larger items, backyard workers such as Ncube largely deal in smaller goods. “I use soda cans which I buy from collectors and melt them to make three-legged pots,” he said from his workshop. Across the city, local residents can be found digging through commercial waste looking for discarded soda cans.

Just around the corner from Ncube’s workshop, 27-year-old Kumbirai Siziba can be found working on tough steel products such as pick-axe heads. His methods are more traditional: using blacksmith muscle, and with the assistance of a group of other workers, he melts iron scrap using coke, then bangs it into shape to make a variety of products.

“We buy the scrap from people who go around collecting it for resale, while we get the coke collected from a Zimbabwe Electricity Supply Authority [the country’s power utility] dump site,” Siziba said. His workshop is a far cry from the industrial-scale output of other steelmakers in the city, but is still a part of a growing trade attracting ever increasing numbers of the city’s residents.

Reviving a steel sector in decline

Zimbabwe used to be one of southern Africa’s biggest steel producers until Ziscosteel shut down its production more than a decade ago. At its peak, Ziscosteel employed more than 5 000 workers.

Although the company has long been beset by instability and management issues, its absence costs the Zimbabwean economy.

Last year, Industry minister Sekai Nzenza complained that, following the closure of Ziscosteel plants and the drop in domestic production, steel imports to support local industry were costing the nation more than US$1 billion a year.

The government has made successive attempts to resuscitate the majority state-owned company but with limited success. The latest attempt to revive the steelworks was in April last year when the company’s board announced it was looking for new investors.

Aside from Ziscosteel, production in Zimbabwe does continue, but the steel industry is a shadow of its former self. According to Dosman Mangisi, chief operating officer of the ZIF, there are now a total of 55 foundries operating in the country, of varying size and capacity, which process over 340,000 tonnes of scrap annually.

“We are however operating below capacity, at 40%, because of operational challenges that include high rentals and shortage of raw materials,” Mangisi said, adding that the sector contributes more than US$1,5 billion to the national economy annually.

Elsewhere, several domestic and international companies have stepped in to revive large-scale steel-making in the country. Tsingshan Holding Group, one of China’s largest corporations and a major global producer of stainless steel, is investing heavily in iron ore and coke production in Zimbabwe, as well as a steel plant that alone is worth more than US$1 billion.

It will become the country’s largest steel-making enterprise and should create hundreds of jobs.

No timeline has been offered as to when Tsingshan’s new operations will start, but according to statements issued by company officials in March last year, the plant will have capacity to produce 1,2 million tonnes of steel under its subsidiary Zhejiang Dinson Holdings, which already runs a ferrochrome plant in Zimbabwe.

ZIF could not provide the number of Chinese foundries operating both in the city of Bulawayo and across the country, but Mangisi said they are in the process of preparing an inventory that will detail the foreign investors involved in the sector, including the Chinese entities. — China Dialogue

Sibanye-Stillwater faces strike at South Africa gold mines

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South Africa’s long-divided mining unions have scored a win since forging a united front against the industry’s largest employer as the country’s labour arbitration body has cleared them to strike following failed wage negotiations with Sibanye Stillwater (JSE: SSW)( NYSE: SBSW).

The Commission for Conciliation, Mediation and Arbitration (CCMA), which has been mediating between Sibanye and unions, declared the long-dragged dispute unresolved as of December 21 and issued a certificate on Monday allowing the unions to give strike notice and the company to implement a lockout.

The parties must give 48 hours’ notice to each other prior to any strike or lockout action, the CCMA said.

The National Union of Mineworkers (NUM), Association of Mineworkers and Construction Union (AMCU), UASA and Solidarity have been negotiating as a coalition since October.

Collectively, they are asking for a monthly pay increase of 1,000 rand ($65) for workers in Sibanye’s gold mines. The deal would run over each of the next three years.

Sibanye’s current wage offer would mean an increase of 520 rand ($33.96) per month in the first year of the agreement, 610 rand per month in the second and 640 rand per month in the third year for certain categories of miners.

The precious metal miner said it paid workers last month for the July to November period, based on the current offer and despite an agreement not having been reached. Sibanye added it will continue to engage with the unions to reach a “fair and reasonable” agreement.

Mining.com

Couple robbed of 1,150kgs of gold, R29 000 & USD1 000 cash

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A Kezi couple was yesterday robbed of ZAR29 000 and USD1 000 cash, 1,150kgs of gold bullion.

According to the Police an investigation is currently underway after an Armed Robbery which occurred on 14/01/22 at Maphisa, Kezi, Matabeleland South in which six unknown male adults who were armed with an AK47 rifle, a 9mm star pistol and an okapi knife pounced at the couple’s house and robbed them of their ZAR29 000 and USD1 000 cash, 1,150kgs of gold bullion valued at USD78 280, a 9mm pistol and a Toyota Wish motor vehicle.

The suspects went on to kidnap the victims’ employee, a man, aged 25, whom they later dumped in the stolen motor vehicle in Bulawayo.

Keeping safe

Retired Chief Inspector Elia Sungiso said that criminals targeting mines or miners are not prophets. They are fed with information from within for them to strike. Their modus operandi is they get tipped on mining claims performing well and they ask for names for easy access to the target site. Suspects in such cases are usually disgruntled workers working at target mines who will, in turn, be given a “cut” (share of the loot). It is highly advisable that mine owners vet their workers and pay decent wages. They should also inform workers on the dangers and risks of discussing mine performance out­side the work zone.

However, tips can come from anyone within the miner’s circles.

Botswana Diamonds shares shoot up on Thorny River potential

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Shares in Botswana Diamonds (LON: BOD) soared on Wednesday after the company revealed that its Thorny River project in South Africa was likely to hold kimberlite volumes “considerably better than expected.”

The stock rose as much as 19%, reaching 1.1p each in early morning trade, and, while it lost some of the gains, it was still trading almost 11% at 1.02p by mid-afternoon. That put the company market capitalization at £8.71 million (almost $12m).

Botswana Diamonds said that following a preliminary assessment of Thorny River’s kimberlite potential, it estimated the asset hosts about 2 million tonnes of kimberlitic material, up from the 1.2 million previously determined.

“Let me put this in context. The 2 million tonnes is almost twice the size of the nearby Marsfontein deposit,” Chairman John Teeling said in the statement.

Botswana Diamonds has identified four more potential blows, which could increase the kimberlite volume still further, it said.

Teeling said these discoveries enhanced the chances of developing a “hub and spoke” mining project, which the company has fully owned since last year.

Analysts from SP Angel noted the promising results “will need to be verified by drilling and a formal resource and reserve assessment to determine the tonnages and grades available for any future mining project.”

Botswana Diamonds said it is now assessing mining options for the complex, located in South Africa’s northern Limpopo province, adding that it hasn’t yet assessed the potential diamond grade.

 

Mining

 

Crypto can’t beat gold as an inflation hedge, says Barrick boss

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The world’s second-biggest gold miner is confident prices will hold firm this year, if not rise, as investors use the metal rather than cryptocurrencies to hedge against inflation and jewelry demand picks up.

“The risk is on the upside,” Barrick Gold Corp. Chief Executive Officer Mark Bristow said in an interview in Riyadh, Saudi Arabia. “I don’t think there’s very much risk on the downside.”

The mostly likely scenario is that gold trades between $1,750 and slightly above $1,800 an ounce, he said. Spot bullion gained 0.4% to $1,809 by 8:45 a.m. in London, paring its loss this year to 1.1%.

Bristow, a geologist who’s lead Barrick since early 2019, is more bullish than analysts, many of who forecast gold will drop as the U.S. Federal Reserve raises interest rates this year. Its price will average $1,683 per ounce in the fourth quarter, according to a Bloomberg survey of analysts and economists.

 

Gold spot price  2021 2022

Gold’s status as a store of value when inflation accelerates has taken hit since the coronavirus pandemic struck. The metal fell 3.6% in 2021 even as inflation rates across the developed world soared with governments and central banks keeping fiscal and monetary policies loose to stimulate their economies.

Bullion faces growing competition from Bitcoin and other cryptocurrencies that are increasingly pitched to investors as a modern-day gold and an effective hedge against inflation. Goldman Sachs Group Inc. argued that Bitcoin is taking market share from gold as a store-of-value investment.

“Look at gold and its precious nature — you can’t print it and you can’t make it,” Bristow said. “You can make cryptocurrencies, and there are many of them. When you’re in a dynamic phase like we’re in now and the world’s uncertain, it’s always good for gold.

Bristow is in Riyadh to attend Saudi Arabia’s first major mining conference. The Toronto-based company digs up copper in the west of the kingdom in a joint venture with the state miner Maaden.

Bloomberg