For quarrying operators, efficiency is the name of the game, and Tesmec is offering an alternative method to unlock major efficiency gains.
In the extractive industry, operational efficiency is not simply a matter of speed: it is the ability to get the most out of every cubic metre of excavated material while reducing costs, machine downtime, and environmental impact on site. In this context, Tesmec Surface Miners stand out as among the most technologically advanced solutions on the market, capable of fundamentally transforming how a quarry operation is designed and managed.
Integrated approach
Tesmec’s surface mining technology was developed with a clear objective: to replace traditional methods — explosives, jack hammers and multiple crushing stages — with a single, continuous and controlled process. The result is high-quality excavated material, already sized to project specifications, that requires significantly reduced downstream processing.
In a conventional quarry operation, the workflow typically involves drilling, blasting with explosives, material collection, primary crushing and, in many cases, one or more secondary crushing stages. Each phase adds costs, consumes time, requires personnel and introduces potential breakpoints into the production chain. Tesmec Surface Miners condense excavation and crushing into a single pass, eliminating the need for primary crushing and, in many cases, drastically reducing secondary crushing requirements.
This approach delivers concrete and measurable advantages: fewer machines on site, simplified logistics, fewer operators required, and a more streamlined, safer site management. Reducing operational interfaces is a key factor in cutting both fixed and variable costs in an extractive operation.
Selective mining
One of the most frequently underestimated aspects in quarry efficiency analysis is the quality of the extracted material. With traditional blasting methods, control over particle size and the stratigraphic origin of the material is limited: blasting produces a heterogeneous mix that requires sorting, screening, and additional processing.
Tesmec Surface Miners, by contrast, enable precise and selective extraction.
Excavation depth is controlled with centimetre-level accuracy, allowing layer-by-layer work, avoiding contamination between materials of different quality, and resulting in a final product with a uniform, manageable particle size. For a quarry that must comply with strict product specifications, such as in the production of aggregates for the construction market, this translates into a significant reduction in waste and a higher yield from the deposit.
Dynamic drive
The Dynamic Drive backend is the Tesmec solution specifically developed to maximise performance in the conditions typical of quarry operations: soft to medium-hard rock, such as marly limestone, gypsum, bauxite, phosphates, potash and similar industrial minerals.
At the heart of the technology is a planetary gearbox integrated directly into the cutting drum, driven by a 100 per cent hydraulic power system. This configuration eliminates the need for digging chains, sprockets, and baseplates — components subject to intense wear in conventional applications — and transfers power directly to the drum with minimal energy loss. The result is a mechanically simpler, more reliable and less costly system to maintain over time.
In terms of operational performance, Tesmec has said the Dynamic Drive can deliver productivity increases compared to surface miners with a conventional backend under the same rock conditions. The significantly higher drum rotation speed makes it particularly suited to the medium-hardness conditions typical of aggregate and industrial mineral quarries.
On the cost side, Tesmec estimates a significant reduction in running expenses. The absence of digging chains and sprockets eliminates one of the main wear parts expenditure items, reducing the frequency of maintenance interventions and associated machine downtime. The cutting power is also accompanied by lower fuel consumption per excavated cubic metre, with a direct impact on the operation’s environmental sustainability and CO₂ emission reduction.
Integrated Technology
The efficiency of a quarry operation is not measured only in terms of tonnes produced per hour, but also in the ability to monitor, control and optimise every aspect of the process in real time. Tesmec integrates an advanced technology suite into its Surface Miners, transforming operational data into a management tool.
The TrenchTronic 5.0 system manages automatic excavation control and machine self-diagnosis, reducing dependence on individual operator skills and ensuring consistent performance over time. The TrenchIntel system provides 3D-GPS automatic guidance that controls steering, trajectory, and excavation depth with millimetre precision — essential for compliance with product specifications and for protecting the deposit. The Re.M system enables real-time remote monitoring of machines, with immediate access to operational data, diagnostics and maintenance alerts — an essential tool for site managers overseeing fleets across multiple sites or in geographically remote areas.
This technological integration translates into greater control, less waste, better planning of maintenance interventions and, ultimately, a reduction in the cost per excavated tonne, the performance indicator that, more than any other, defines the long-term competitiveness of a quarry operation.
Local presence
Since 1984, Tesmec has been active in the most important surface mining projects worldwide, with machines operating across Europe, Africa, the Middle East, Asia and the Americas. The Rock Hawg and Dynamic Drive range covers a wide variety of geological conditions and applications, from bauxite in Guinea to limestone in Kazakhstan, from gypsum in the United States to marly limestone in the United Kingdom.
To support operations, Tesmec offers a comprehensive service that includes preliminary feasibility studies, geotechnical analysis, site management assistance, remote fleet monitoring and a global spare parts service. The goal is to ensure that every machine operates under optimal conditions throughout the project, with the least possible impact on the project’s timelines and costs.
For more information, visit tesmec.com
