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ZAWIMA Patron Urges Students to Lead Zimbabwe’s Mining Entrepreneurship Wave

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The Patron of the Zimbabwe Association of Women in Mining Associations (ZAWIMA) has called on young women to redefine their roles in the extractive sector—not merely as employees, but as the next generation of entrepreneurs, suppliers, and industrial leaders, Mining Zimbabwe can report.

by Rudairo Mapuranga

Speaking at a high-profile public lecture co-hosted by the Women’s University in Africa and the Zimbabwe School of Mines, Blessing Hungwe emphasised that the sector’s future depends on female-led innovation.

“Women must have opportunities to supply goods and services in the mining sector,” Hungwe told an audience of university students, School of Mines trainees, and pupils from Roosevelt High School. Drawing from her own success as a small-scale gold miner, she argued that Zimbabwe’s mining boom—which saw export earnings reach US$7.3 billion in 2025—must translate into tangible wealth for women.

A Constitutional and Moral Mandate

Hungwe framed her call to action through both a moral and legal lens:

  • The Moral Fabric: Using the “Parable of the Talents,” she positioned women as capable, responsible stewards of resources.

  • The Legal Backbone: She cited the Constitution of Zimbabwe, which mandates equitable benefit from natural resources and requires the state to ensure women have equal access to land and capital.

“It is not possible for us to agree on the direction if we do not all have a shared understanding of the map,” Hungwe remarked, highlighting the Constitution as the ultimate guide for women’s rights.

Quantifying the Opportunity

The scale of the industry provides a massive backdrop for potential female entrants:

  • Sector Growth: Export earnings hit $7.3 billion in 2025, nearly tripling the $2.7 billion recorded in 2017.

  • Gold Dominance: Gold alone contributed $4.4 billion, accounting for $75 of every $100 Zimbabwe earns from exports.

Hungwe challenged the students to ensure these figures include them. She noted a major policy win: ZAWIMA successfully lobbied Fidelity Gold Refinery (FGR) to lower the 5% gold trade incentive threshold from 20kg to just 0.5kg, making it accessible to small-scale women miners.

Navigating Risks and Barriers

While highlighting favourable policies—such as artisanal miners receiving 90% of payments in foreign currency—Hungwe was candid about the industry’s challenges:

  • Health Risks: She warned against the dangers of mercury use, which poses severe risks to women and pregnant mothers.

  • Structural Barriers: Women still face hurdles in securing industrial attachments, jobs, and breaking into male-dominated supply chains.

The ZAWIMA Legacy

As the unified voice for women in the sector, ZAWIMA is working to influence corporate and public policy to expand procurement opportunities for women.

“We seek to influence under the banner of ZAWIMA,” Hungwe concluded. “An organization driven by my passion to see all women speaking with one voice.”

For the students in attendance, the message was clear: the legal and policy “map” is already drawn; the next step is for young women to claim their territory.

“Catching Them Young”: Strategic Push to Move More Zimbabwean Women into Mining

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Young women are being urged to rethink and reorganise their career aspirations to venture into the mining industry, as established leaders in Zimbabwe’s mineral sector push to dismantle the perception of mining as a male-only domain, Mining Zimbabwe can report.

By Rudairo Mapuranga

The call to action came during a public lecture held on Tuesday at the Women’s University in Africa, co-hosted by the Zimbabwe School of Mines to mark International Women’s Day. The audience included high school pupils from Roosevelt, university students, and trainees from the School of Mines.

“We are catching them young,” said Raine Mupunzi of the Zimbabwe School of Mines, explaining why Form 3 and Form 4 pupils were invited. “We are trying to show them that beyond traditional ‘caregiving’ roles, women have a place at the mining table. This industry used to be male-dominated, but the landscape is changing.”

Mupunzi described the event as a joint effort involving the Zimbabwe Miners’ Federation and the Zimbabwe Association of Women in Mining Associations (ZAWIMA) to amplify female voices and showcase what women are already achieving in the sector.

Mining as a Tool for Family Transformation

Blessing Hungwe, patron of ZAWIMA and a successful small-scale gold miner, used her personal story to advocate for entrepreneurship. She shared how her mining proceeds funded her son’s mining engineering degree—a tangible example of how the sector can transform families.

“The journey of my life has been signposted by mining,” Hungwe said, urging young women to look beyond employment and explore the mining value chain. “We need more women entrepreneurs given opportunities to supply goods, services, and trade.”

Policy Wins for Women Miners

Hungwe also highlighted recent policy shifts driven by organised advocacy:

  • Gold Trade Incentives: Starting January 1, Fidelity Gold Refinery (FGR) lowered the threshold for the 5% gold trade incentive from 20kg to just 0.5kg.
  • Increased Access: This change, lobbied for by ZAWIMA, makes benefits accessible to a much wider group of female miners.
  • Licensing: Fidelity has also licensed an increasing number of women gold buyers.

The Economic Reality

The stakes are high: Zimbabwe’s mining sector generated US$7.3 billion in export earnings in 2025, with gold accounting for US$4.4 billion. Currently, mining accounts for US$75 of every US$100 the country earns from exports. The message to the young women in attendance was clear: these numbers should no longer be dominated by men.

Building a Legacy

Chiedza Chipangura, a veteran in women’s mining advocacy, framed the gathering as a deliberate “passing of the torch.”

“We want to demystify mining and remove the fear,” Chipangura said. “We don’t want to hear ‘pity parties.’ We went through hardships so these young girls don’t have to. We are leaving a legacy by mentoring the next generation to take the relay from us.”

Kavango Extends Nara Gold Project Acquisition Deadline as Parties Finalize Legal Formalities

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Kavango Resources plc has agreed to extend the completion date for its acquisition of the Nara Gold Project in Filabusi, marking the second such delay as parties work to finalise legal documentation for the 45-claim asset, Mining Zimbabwe can report.

By Rudairo Mapuranga

The London and Victoria Falls-listed exploration and gold production company stated that the extension will provide the necessary time to complete outstanding legal formalities related to the transaction. Both Kavango and the seller remain committed to closing the deal, according to an official statement released on March 24.

“I am delighted to be working with Simon Bowman toward the completion of this sale and purchase,” said Peter Wynter Bee, Chairman and Interim CEO of Kavango.

Timeline of the Acquisition

The company first announced on July 1, 2025, that it had exercised an option to acquire 100% of the Nara project, which consists of 45 contiguous gold claims located in Matabeleland South near Bulawayo.

The acquisition was originally expected to close by late 2025; however, the parties agreed in December to push the deadline to February 27, 2026. This latest extension follows a March 2 announcement in which Kavango indicated that completion was still pending.

Strategic Importance to Kavango’s Portfolio

Nara represents a strategic addition to Kavango’s Zimbabwe portfolio, complementing its flagship Hillside Gold Project in the Filabusi Greenstone Belt.

The company has been steadily expanding its footprint in Zimbabwe’s gold sector. Earlier this month, Kavango successfully raised approximately US$8.4 million through parallel subscriptions in the UK and Zimbabwe to fund production growth and aggressive exploration.

Gold buying prices in Zimbabwe per gram/ ounce, 25 March 2026

Gold buying prices in Zimbabwe per gram/ ounce, 25 March 2026, from the official gold buyer and exporter Fidelity Gold Refinery (FGR).

1 oz = 31.1035 g

CategoryPrice (/g)Price (/oz)
SG 90% and above$134.03$4,168.80
SG 85% and above but below 90%$132.61$4,124.63
SG 80% and above but below 85%$131.19$4,080.47
SG 75% and above but below 80%$129.77$4,036.30
Sample 5g and above but below 10g$127.65$3,970.36
Fire Assay CASH$134.74$4,190.88

 

Note: The Fire Assay cash price applies to gold above 100g, with no sample deduction.

A sample of not more than 10g is deducted for the Fire Assay Transfer price.

Copper Hits Three-Month Low: Geopolitical Tensions and Energy Costs Cloud Demand Outlook

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Copper prices have plummeted to their lowest levels in over three months as escalating tensions in the Middle East unsettle financial markets and cloud the global growth outlook, Mining Zimbabwe can report.

On the London Metal Exchange (LME), copper declined by as much as 1.8%, extending a sharp 6.7% fall from last week—the steepest weekly drop since April 2025. Prices were recently trading near US$11,840 per tonne, while contracts on the Shanghai Futures Exchange fell approximately 2% to 92,930 yuan per tonne.

Rising Energy Costs & Inflationary Pressure

The recent slide reflects a major shift in market sentiment. Investors are increasingly concerned about the economic ripple effects of surging oil and gas costs. As the conflict intensifies, energy prices are driving up industrial input costs while simultaneously weakening global consumption.

This environment heightens the risk of an economic slowdown paired with persistent inflation. Such a combination complicates the policy path for central banks, as expectations of prolonged high interest rates continue to weigh down commodity prices.

China’s Opportunistic Buying

China, the world’s leading copper consumer, is showing signs of opportunistic buying. The lower price point has encouraged industrial users to restock, particularly as domestic prices dipped below key support levels. This internal demand has helped cushion the decline in Chinese markets, even as international benchmarks remain under heavy pressure.

Across the broader metals complex, price movements remain subdued, reflecting a generally cautious tone among global investors.

The Long-Term Structural Story

Despite the short-term volatility, the structural case for copper remains robust. The metal’s central role in critical sectors continues to underpin long-term consumption growth:

  • Power & Digital Infrastructure
  • Renewable Energy Systems
  • Electric Vehicles (EVs)

According to the International Energy Agency (IEA), global supply may struggle to keep pace with demand in the coming years. Projections point toward a widening deficit unless significant capital is deployed into new mining projects.

Short-Term Headwinds

For now, immediate macroeconomic factors are dominating the narrative:

  • Margin Squeeze: Higher energy costs are tightening margins for producers.
  • Weak Industrial Activity: Sectors like construction and manufacturing are showing reduced immediate demand.
  • Stable Inventories: Relatively comfortable stock levels in exchange warehouses are limiting the impact of supply constraints on prices.

Outlook

The direction of copper prices will largely depend on the evolution of the geopolitical situation and the stabilisation of energy markets. Until uncertainty regarding global growth and monetary policy subsides, the market is expected to remain volatile. While the long-term “green metal” demand story is intact, it currently sits in the shadow of macroeconomic pressures and geopolitical risk.

Why Ventilation is the New Heart of Zimbabwe Mining

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Once considered a background engineering service, ventilation is emerging as a central factor in the safety, productivity, and economic viability of Zimbabwe’s underground mines, Mining Zimbabwe can report.

For Dr Tonderai Chikande, President of the Mine Ventilation Society of Zimbabwe (MVSZ), ensuring that ventilation systems keep pace with the full Life of Mine (LoM) has become one of the sector’s most pressing challenges. He notes that as mines deepen and mechanise, ventilation can no longer be treated as a secondary concern. Instead, it plays a decisive role in whether operations remain safe and economically sustainable.

“Ventilation is no longer a background engineering service,” Dr Chikande explained. “It has become a primary determinant of safety, productivity, energy performance, and the economic viability of mines—whether large-scale mechanised operations or smaller conventional and artisanal workings.”

In recent years, Zimbabwe’s mining sector has pushed into deeper ore bodies while increasing mechanisation to boost production. Rising safety standards and higher energy costs have reinforced the need for ventilation to be treated as a strategic priority rather than a reactive afterthought.

Heat and Environmental Pressures at Depth

Deep-level mining brings inherent risks, particularly the challenge of rising underground temperatures. In some operations, rock temperatures can exceed 60°C, creating extreme heat and humidity. Mechanised mines add to this pressure with diesel fleets, high-powered machinery, and electrical infrastructure, all of which intensify thermal loads.

For large mechanised operations, Dr Chikande says robust cooling systems, high-volume fans, and carefully engineered airflow networks are essential. Conventional mines must balance adequate airflow against energy costs, while artisanal miners face the gravest risks; narrow shafts and minimal monitoring leave workers vulnerable to heat stress and oxygen deficiency.

The Complexity of Airflow Management

Managing airflow is not just about heat; it requires meticulous network planning. As mines expand laterally and vertically, airway resistance increases, making it harder to deliver sufficient ventilation to working faces. Dr. Chikande warns that many conventional operations only respond once problems arise, rather than anticipating them.

  • Large Mines: Require advanced modelling, booster fans, and staged infrastructure aligned with LoM plans.

  • Small/Artisanal Operations: Informal development can unintentionally block airflow, increasing exposure to dust, fumes, and gases.

Early integration of ventilation design into mine planning is the key to preventing these hazards.

Mechanisation and Automation Demands

The move toward mechanised and automated mining brings fresh challenges. Diesel particulate matter, concentrated production zones, and higher energy use all increase airflow requirements. Simultaneously, tele-remote and autonomous operations demand stable underground conditions to keep machinery and sensors functioning reliably.

Technology is playing an increasingly central role. Dr Chikande observes that larger mines are turning to real-time environmental monitoring, automated airflow controls, and integrated sensor networks. Even smaller operations can benefit from low-cost monitoring tools and structured airflow management to improve safety and efficiency.

Strategic Planning for the ‘Life of Mine’

Ventilation infrastructure is capital-intensive and difficult to relocate, yet mining layouts evolve constantly as ore bodies shift. Proactive planning is essential.

“Regular updates to ventilation models, involving specialists in strategic mine planning, and progressive expansion of infrastructure can prevent costly retrofits,” says Dr Chikande.

Smaller operations can achieve flexibility through modular fans and staged airway development, allowing systems to adapt as the mine grows.

Energy Efficiency: The Bottom Line

Ventilation is a major energy consumer, sometimes accounting for nearly half of the total power consumption in deep mines. Rising energy costs and sustainability pressures have put efficiency at the forefront. Mechanised operations are adopting technologies such as variable speed drives (VSDs) and ventilation-on-demand (VoD) systems, while conventional and artisanal miners are encouraged to focus on simple, well-planned airflow strategies.

Dr Chikande concludes that across all mining sectors, the challenge remains the same: ventilation must shift from reactive compliance to a core component of strategic mine planning. Without this shift, safety, productivity, and operational viability remain at risk.

Gold buying prices in Zimbabwe per gram/ ounce, 24 March 2026

Gold buying prices in Zimbabwe per gram/ ounce, 24 March 2026, from the official gold buyer and exporter Fidelity Gold Refinery (FGR).

1 oz = 31.1035 g

CategoryPrice ($/g)Price ($/oz)
SG 90% and above$128.88$4,008.62
SG 85% and above but below 90%$127.51$3,966.00
SG 80% and above but below 85%$126.15$3,923.70
SG 75% and above but below 80%$124.79$3,881.40
Sample 5g and above but below 10g$122.74$3,817.64
Fire Assay CASH$129.56$4,029.77

 

Note: The Fire Assay cash price applies to gold above 100g, with no sample deduction.

A sample of not more than 10g is deducted for the Fire Assay Transfer price.

Caledonia Revenue Surges 46% to $268M as Record Gold Prices Drive Historic Year

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Caledonia Mining Corporation Plc has posted record-breaking financial results for 2025, with revenue jumping 46% to US$267.7 million. A surging gold price combined with stable production drove the strongest year in the company’s history, Mining Zimbabwe can report.

By Rudairo Mapuranga

Explosive Profit Growth

Profit after tax more than doubled to US$67.5 million, a staggering 193% increase from the US$23.1 million reported in 2024. This growth was mirrored in earnings per share, which rose “211% to US$2.83″.

The dramatic earnings surge was fueled by a 44% increase in the average realised gold price, which reached US$3,383 per ounce. This windfall more than offset inflationary pressures and rising operational costs across the business.

Financial Highlights at a Glance (2025 vs. 2024)

Metric2025 (US$)2024 (US$)% Change
Revenue$267.7 Million$183.4 Million📈 +46%
Gross Profit$137.1 Million$77.0 Million📈 +78%
EBITDA$125.3 Million$59.7 Million📈 +110%
Profit After Tax$67.5 Million$23.1 Million📈 +193%
Net Cash Flow (Ops)$76.2 Million$41.9 Million📈 +82%

Strengthened Balance Sheet and Liquidity

Caledonia’s cash generation saw a marked improvement, with free cash flow rising to US$62.1 million, up from US$10.6 million in the prior year. By the end of 2025, the company successfully transitioned from a net debt position of US$8.7 million to a robust net cash position of US$23.8 million.

“2025 has been a strong year for the Group, marked by record financial performance, excellent cash generation, and continued strategic progress across the business,” the company stated in its preliminary results announcement.

Reflecting this confidence, Caledonia maintained its quarterly dividend of 14 US cents per share, payable on April 17, 2026.

Operational Costs and Grades

While financial performance reached new heights, operational costs faced upward pressure:

  • On-mine cash costs: Averaged US$1,263 per ounce.
  • All-in sustaining costs (AISC): Reached US$1,952 per ounce.
  • Processed Grade: Declined slightly from 3.2 g/t to 3.07 g/t.

These figures were marginally above guidance, primarily due to higher labour, consumables, and power costs.

Future Outlook: Bilboes and Beyond

In early 2026, Caledonia further fortified its liquidity with a US$150 million convertible senior notes offering, yielding approximately US$130 million in net proceeds. To protect future margins, the company initiated a hedging program, securing a floor price of US$3,500 per ounce for 3,000 ounces per month through December 2028.

This fortified financial standing provides the “greater flexibility” required to fund high-impact growth initiatives, including the development of the Bilboes project and ongoing exploration at Motapa.

Beyond the Slump: Why the 2026 EV Slowdown Could Favour Zimbabwe’s Lithium Strategy

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A seasonal slowdown in global electric vehicle (EV) sales at the start of 2026 is masking a more critical structural shift in battery markets, one that could ultimately favour resource-rich countries like Zimbabwe, provided they move decisively up the value chain.

By Ryan Chigoche

The Numbers Behind the “Slowdown”

New data from Adamas Intelligence reveals that global passenger xEV sales, including battery electric (BEV), plug-in hybrid (PHEV), and hybrid vehicles, fell 39% month-on-month in January, representing a 6% decline compared to the same period last year.

The decline was most pronounced in the Asia-Pacific region, where sales dropped 46% from December, reflecting a typical early-year cyclical slowdown in the world’s largest EV market. Consequently, battery deployment mirrored this trend, falling 42% month-on-month to 64,381 MWh.

Key Data Summary: The 2026 EV & Battery Mineral Outlook

MetricJanuary 2026 ValueTrend (Year-on-Year)
Global xEV Sales-39% (Month-on-Month)📉 Down 6%
Avg. Battery CapacityWeighted Average📈 Up 8%
Lithium Deployment37,275 Tonnes (LCE)📈 Marginal Increase
Lithium Intensity21.4 kg per battery📈 Up 8%
Graphite IntensityAvg. Usage per Vehicle📈 Up 10%

Structural Shifts: Larger Batteries, Higher Mineral Intensity

Beneath these headline declines, a more durable structural shift is taking shape. Despite weaker sales volumes, the average size of EV batteries continues to grow.

In January 2026, the global sales-weighted average battery capacity rose 8% year-on-year. As automakers push for longer range and higher performance, the amount of raw materials required per vehicle is increasing.

Lithium, Zimbabwe’s flagship battery mineral, remains central to this transition:

  • Total Deployment: 37,275 tonnes of Lithium Carbonate Equivalent (LCE) were deployed globally in January, up marginally year-on-year.

  • Average Intensity: The lithium content per battery rose 8% to 21.4 kg.

For Zimbabwe’s key assets, including Bikita Minerals, Arcadia Lithium Mine, and the Zulu Lithium Project, the implications are significant. Demand is no longer driven solely by sales volume, but increasingly by the specific mineral requirements of each unit.

The Push for Domestic Beneficiation

This shift coincides with the Zimbabwean government’s efforts to tighten control over its lithium value chain. The current ban on the export of raw lithium concentrates aims to force investment into domestic processing, ensuring more value is retained within the country.

In principle, this aligns with global trends. As battery chemistry evolves, the highest margins are shifting downstream into refined products like lithium carbonate and hydroxide.

The Industrial Challenge

However, the data also highlights a significant hurdle. The global battery supply chain remains heavily concentrated:

  • CATL leads deployment across lithium, nickel, cobalt, manganese, and graphite.
  • BYD continues to dominate EV battery demand.

These firms operate within deeply integrated ecosystems where chemical conversion and manufacturing are largely situated outside of Zimbabwe. Without sufficient local refining infrastructure, Zimbabwe’s push for beneficiation risks outstripping its current industrial base.

Untapped Potential: The Graphite Opportunity

Beyond lithium, the data points to a missed opportunity in graphite. As the largest material component in EV batteries by volume, graphite recorded a 10% year-on-year increase in average usage per vehicle. Currently, Zimbabwe’s graphite segment remains underdeveloped, potentially excluding the nation from a fast-growing market segment.

At the same time, the global shift toward Lithium Iron Phosphate (LFP) batteries is reducing demand for nickel and cobalt. This trend reinforces Zimbabwe’s resource advantage in lithium but highlights its vulnerability to over-reliance on a narrow commodity base.

Conclusion: A Delicate Balancing Act

Zimbabwe’s policy direction is broadly aligned with global market fundamentals: capturing more value from mineral wealth. However, execution remains the deciding factor.

  • The Risk of Delay: Moving too slowly leaves the country as a raw material exporter in a chain dominated by foreign entities.
  • The Risk of Aggression: Moving too fast without the necessary infrastructure risks disrupting production at a time when long-term demand remains resilient.

The latest data suggests the EV market is not weakening; it is maturing. For Zimbabwe, the real question is whether its industrial policy can mature alongside it.

Muriel Mine Hydrosluicing: How a mine in Zimbabwe is Turning Tailings Into Gold

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Pan African-owned Muriel Mine has turned a legacy tailings storage facility into a profitable production asset through a carefully engineered hydrosluicing and carbon-in-leach process. With the dump now in its final five months of life, the operation offers a textbook case of efficient surface mining, water recycling, and integrated processing, all while funding a major exploration drive that has extended the mine’s underground life to five years.

The following technical overview, compiled from presentations made during an Association of Mine Managers of Zimbabwe (AMMZ) technical visit, details every stage of the process. Webster Chemhuru, Senior Plant Metallurgist, led the delegation through the hydrosluicing and processing circuits, while specialised contractor BillNick Engineering provided additional insights into the hydrosluicing system and tailings management.

Water Sourcing and Storage

The hydrosluicing operation relies on a dual-source water supply. Sixty per cent of the water comes from Chawara Dam, located approximately four to five kilometres from the mine and shared with local farmers. The remaining forty per cent is recycled water drawn from the active tailings storage facility. This water is detoxified to break down residual cyanide before reuse, reducing both fresh water consumption and the operation’s environmental footprint.

Water is first stored in a 10,000-cubic-metre tank. From there, it is fed into a high-pressure system where pumps deliver water to the hydrosluicing monitor at pressures of 1,500 to 1,800 kilopascals at the nozzle.

Hydrosluicing (Hydro-Mining)

The dump, a consolidated legacy tailings deposit, is broken down using a water jet monitor. The high-pressure stream mixes with the tailings to form a slurry that is pumped to the plant. BillNick explained that the water jet mixes the tailings into a pumpable slurry, which is moved by variable-speed pumps to a trash screen that removes debris such as timber and old pipes. From there, the slurry flows into a surge tank before being fed directly into the processing plant.

Operational controls are critical for safety and efficiency. Because the dump material has been consolidated over decades, the mining angle is maintained between 27 and 33 degrees to prevent slope failure, a phenomenon known as “sloughing.” Before each shift, crews inspect the working face for any signs of instability.

The mine is also fabricating a remote-controlled monitor in-house. Once completed, it will allow operators to work away from the face edge, improving safety and enabling higher pressures of up to 2,500 kilopascals for applications requiring denser slurries.

BillNick, which specialises in hydrosluicing and tailings management, noted that it handles everything from design and construction to operation, offering the same technology to other mining operations.

Milling and Classification

After screening, the slurry is collected in a surge tank and then distributed to the milling circuit. The plant is equipped with four 8-by-16-foot open-discharge ball mills, each fed by its own buffer tank with a volume of approximately 890 cubic metres. These buffer tanks ensure a steady feed even when the hydrosluicing rate fluctuates.

Because the dump material contains fine-grained gold locked in refractory host minerals, the target grind is 90 to 95 percent passing 75 microns, significantly finer than conventional milling. This process liberates the gold particles and exposes them to the leaching solution.

After milling, the slurry is pumped to hydrocyclone classifiers. Coarse material (cyclone underflow) is returned to the mills for further grinding, while fine material (cyclone overflow) passes through a final trash screen before flowing to the thickener.

Thickening

The thickener is a 35,000-cubic-metre unit designed to dewater the slurry from about 15 to 20 percent solids to the 50 percent solids required for the carbon-in-leach (CIL) circuit. This densification reduces the volume of liquid that must be heated and agitated during leaching, lowering operating costs.

Carbon-in-Leach (CIL) Circuit

The CIL circuit comprises ten tanks, each with a capacity of 890 cubic metres. Together, they provide approximately 36 hours of residence time. Sodium cyanide is added to dissolve gold, forming a stable cyanide complex in solution. Activated carbon is introduced simultaneously so that, as gold dissolves, it is immediately adsorbed onto the carbon.

This carbon-in-leach approach maximises recovery by keeping the dissolved gold concentration low, which drives the leaching reaction forward. Carbon moves counter-current from the last tank to the first tank, and the loaded carbon is harvested from tank number one, where gold concentration is highest.

Webster Chemhuru highlighted two significant metallurgical challenges. First, some zones in the dump contain up to 0.5 percent copper, which consumes cyanide and interferes with gold dissolution. The mine manages this through selective mining and blending high-copper material with lower-grade zones.

Second, the ore contains naturally occurring carbonaceous material that can adsorb gold directly from solution, a phenomenon known as preg-robbing. This competes with the activated carbon and reduces overall recovery. As a result, recovery rates have declined from 80 per cent in 2023 to approximately 70 to 75 per cent currently, reflecting the variable nature of the remaining dump material.

Elution and Smelting

Loaded carbon is transferred to the elution section, where gold is stripped from the carbon using a Zadra elution process. The plant has two elution vessels: one with a three-tonne capacity and another with a one-and-a-half-tonne capacity, giving a combined throughput of 4.5 tonnes of carbon per day.

The Zadra system uses a hot caustic cyanide solution to desorb gold, producing a concentrated pregnant solution that is sent to electrowinning cells. Electrowinning produces a gold-rich sludge, which is dried and smelted in the on-site smelt house once per week, producing gold doré bars.

Production figures presented during the visit show that tonnage treated grew from 200,000 tonnes in 2023 to 765,000 tonnes in 2024, reaching 1,166,000 tonnes in 2025. Gold production increased from 104 kilograms in 2023 to 425 kilograms in 2024 and 630 kilograms in 2025. In early 2026, the operation is averaging approximately 45 kilograms of gold per month.

Tailings Storage Facility

Waste material from the CIL circuit, now largely depleted of gold, is pumped to the tailings storage facility, which covers approximately 40 hectares. Water that settles on the surface is decanted and pumped back to the plant, contributing to the 40 per cent recycled water used for hydrosluicing.

Standpipes are installed around the facility to monitor the phreatic water table, ensuring structural stability. Berms and spillways are designed to contain any accidental releases, meeting environmental requirements.

Operational Risks and Mitigation

BillNick identified two major operational risks. The first is slope failure, or sloughing, which is managed by maintaining mining angles between 27 and 33 degrees and conducting pre-shift inspections. The second is high-pressure pipe failure, which can cause serious injury. Pipes are inspected regularly and repaired promptly, and the water used contains few chemicals, reducing environmental risk in the event of a spill.

From Dump to Underground

The current dump being retreated has only five months of material remaining. Revenue from the dump retreatment operation, combined with a dedicated US$20 million exploration programme, has funded a major extension of the mine’s underground life.

Exploration has extended Muriel Mine’s underground life-of-mine to five years, while the nearby Aysha deposit now holds 1.3 million ounces of resources with a projected 30-year life.

However, the newly discovered underground reefs, including the South Reef and extensions in the Fortuna and Cape Gum areas, are not yet being mined. The operation is currently constructing a crusher to process the harder primary ore from these zones, ensuring a seamless transition when the dump is exhausted.

Industry Recognition

AMMZ President Gift Mapakame praised the operation’s approach, noting that retreating materials with more efficient technologies presents an opportunity for greener mining.

“There is no mobile equipment—just pumping, processing, and tailings storage,” he said.

AMMZ Vice President George Wayeni of RZM Murowa added that revenues from the dump retreatment project are funding exploration for the future.

“Lots of other operations can take a leaf from this initiative,” he said.

Conclusion

Muriel Mine’s dump retreatment process—from hydrosluicing with high-pressure water, through fine grinding, CIL leaching, elution, smelting, and responsible tailings disposal—demonstrates how legacy tailings can be transformed into a productive, self-funding operation.

With the dump now in its final months and a crusher being built for new underground ore, the operation is well positioned to sustain production growth while maintaining the cost discipline that has made it one of Zimbabwe’s leading gold producers.