Pivoting Underground: Sandvik Equips Lucara's Karowe Diamond Mine for Extended Life
August 14, 2026 – In a pivotal development for Botswana's renowned diamond sector, Sandvik has announced a substantial order to supply a comprehensive underground fleet to Lucara Botswana, the operator of the esteemed Karowe diamond mine. This strategic procurement, valued significantly, marks a crucial step in the Karowe Underground Project, designed to extend the mine's operational lifespan beyond 2038. The order, officially booked in the second quarter of 2026, encompasses a 15-unit fleet of state-of-the-art underground drills and loaders, complemented by an extensive package of parts and services.
The transition from open-pit to underground mining is a complex and capital-intensive endeavor, often representing a critical juncture for mature mining operations seeking to unlock deeper reserves and maximize asset value. For Karowe, a mine celebrated for its consistent recovery of extraordinary large diamonds—including the remarkable discovery of its tenth diamond weighing over 1,000 carats earlier this year—this shift is not merely about extending life but about preserving a legacy of unparalleled gem production. The collaboration with Sandvik, a global leader in mining equipment and technology, underscores Lucara's commitment to leveraging advanced solutions for a technically demanding and high-value operation.
A Strategic Fleet for Deep Mining
The 15-unit fleet from Sandvik is meticulously selected to meet the diverse and rigorous demands of underground diamond mining. The equipment specified reflects a considered approach to both development and production phases, crucial for establishing and sustaining a deep underground operation.
- Five DD321 development drills: These advanced drill rigs are essential for rapid and efficient excavation of tunnels, ramps, and shafts, forming the intricate network required for underground access and ore extraction. Their precision and reliability are paramount in ensuring the timely progression of the Karowe Underground Project.
- Two DD422i development drills: Complementing the DD321s, these intelligent development drills offer enhanced automation and data capabilities, further optimizing the drilling process, improving safety, and enabling more precise tunnel construction, which is vital for long-term operational integrity.
- Four Toro LH517i loaders: High-capacity, intelligent loaders designed for efficient mucking and hauling of excavated material in medium to large underground operations. Their i-series designation indicates advanced automation features, improving productivity and reducing operational costs.
- Two Toro LH621i loaders: Representing a larger class of underground loaders, the LH621i units provide even greater capacity and power, crucial for handling the significant volumes of rock and kimberlite expected in a large-scale diamond mine. These heavy-duty machines are vital for maintaining high material movement rates.
- One DS422i cable bolter: Ground support is a critical component of underground safety and stability. The DS422i cable bolter is specifically designed for installing long cable bolts, which provide essential reinforcement in large excavations and unstable ground conditions, enhancing overall mine safety and structural integrity.
- One DU311 longhole drill: This drill is engineered for efficient production drilling, capable of creating long, precise boreholes for blasting, which is fundamental to the stoping methods employed in underground production. Its inclusion signifies a focus on optimizing ore recovery from deep reserves.
Beyond the physical machinery, Sandvik's offering includes robust aftermarket support, supply of essential rock tools, and a suite of digital services. These digital solutions, such as
Lucara's Vision: The Karowe Underground Project
The Karowe mine, located in Botswana, has garnered international acclaim since its commissioning in 2012 for consistently unearthing some of the world's most exceptional Type IIa diamonds. Its track record includes the recovery of high-value stones such as the 1,109-carat "Lesedi La Rona" and the 1,758-carat "Sewelô", making it a cornerstone of Lucara Diamond Corp.'s portfolio and a significant contributor to Botswana's economy. The transition to underground mining, spearheaded by the Karowe Underground Project, is not merely an option but a strategic imperative to access the deeper, high-grade portions of the AK6 kimberlite pipe that are no longer economically viable to extract via open-pit methods.
This monumental project aims to extend the mine's operational life well beyond 2038, securing future diamond production and the associated economic benefits for Botswana. The investment in advanced underground mining technology is testament to Lucara's long-term vision and its confidence in the continued potential of the Karowe resource. The move underground often entails significant geological and geotechnical challenges, necessitating state-of-the-art equipment and highly skilled personnel to ensure safe and efficient operations. The chosen Sandvik fleet is designed to meet these challenges head-on, providing the necessary tools for precision drilling, efficient mucking, and robust ground support in a deep mining environment.
De-Risking Investment: The Role of Strategic Financing
A project of the scale and complexity of the Karowe Underground Project requires substantial capital expenditure. Recognizing this, the agreement between Sandvik and Lucara Botswana includes a crucial financing package arranged by Sandvik Financial Services (SFS). This financial arrangement is further bolstered by a guarantee from the Swedish Export Credit Agency (EKN), providing an additional layer of security and facilitating Lucara's significant investment.
Such strategic financing solutions are increasingly common and critical in the global mining industry, particularly for major infrastructure and equipment procurements. They serve to de-risk investments for the buyer by offering flexible payment terms and favorable interest rates, while also securing the order for the supplier. For Lucara, the SFS and EKN-backed package means that a significant portion of the capital required for this essential fleet is managed through a structure that supports their long-term project financing strategy, easing the immediate financial burden and allowing for smoother capital deployment. This integrated solution, combining equipment, services, and financing, underscores Sandvik's capability to deliver holistic support to its global mining clientele.
Botswana's Diamond Legacy and Global Impact
Botswana holds a preeminent position in the global diamond industry, consistently ranking among the top producers by value. The nation's commitment to responsible mining and its partnership with companies like Lucara have fostered a stable and prosperous environment for diamond exploration and extraction. The continued success and extended life of mines like Karowe are vital not only for the direct economic contributions—through royalties, taxes, and employment—but also for maintaining Botswana's reputation as a reliable source of high-quality diamonds.
The Karowe mine, in particular, has carved out a unique niche in the market due to its exceptional recovery of large, high-value diamonds. These stones often command premium prices, contributing disproportionately to the mine's overall revenue. Ensuring the longevity of Karowe's operations through the underground project therefore has significant implications for the global supply of such rare and sought-after gems, impacting market dynamics for luxury goods and investment diamonds. The sustained recovery of these "once-in-a-lifetime" diamonds from Karowe solidifies its irreplaceable role in the industry.
Operationalizing the Future: Deliveries and Long-Term Support
The delivery of the 15-unit fleet is currently underway, having commenced in the second quarter of 2026, and is scheduled to continue through the fourth quarter of the same year. This phased delivery approach allows for the systematic integration of new equipment into the mine's evolving underground infrastructure, minimizing disruption and optimizing the commissioning process.
The provision of ongoing aftermarket support, including rock tools and digital services, is not a mere add-on but a fundamental component of Sandvik's offering. In the demanding environment of underground mining, equipment uptime is paramount. Digital tools like
Conclusion: A Blueprint for Sustainable Diamond Mining
The order placed by Lucara Botswana with Sandvik represents more than just an equipment transaction; it is a strategic investment in the future of one of the world's most significant diamond mines. By embracing advanced underground mining technologies and leveraging innovative financing solutions, Lucara is positioning the Karowe mine for sustained production and profitability for decades to come. This move is a testament to the industry's continuous drive for innovation, efficiency, and resource optimization in the face of dwindling near-surface reserves.
The Karowe Underground Project, facilitated by this new fleet, serves as a compelling case study for other mature open-pit operations globally contemplating similar transitions. It underscores the critical role of technological partnerships, robust financial planning, and comprehensive lifecycle support in ensuring the viability and success of complex mining ventures. As deliveries progress through 2026 and the Karowe mine deepens its reach, the global diamond industry will be watching closely as Lucara continues to unearth the rare treasures that have cemented its place in mining history, all while establishing a new benchmark for sustainable deep-level diamond extraction.
