GROUND SUPPORT & ROCK REINFORCEMENT
Designed with an operator’ s focus in mind, each unit features a swivel seating configuration to accommodate forward and reverse movement with comfort and confidence. Optional integrated camera systems provide additional visibility, supporting safer manoeuvreability in constrained headings. In deeper operations, this attention to control and consistency helps maintain concrete quality, reduce rebound, and improve adhesion during placement.
Once the concrete reaches its destination, ProShot takes over. Engineered for precise placement, ProShot integrates seamlessly with the ProMix line and ensures effective coverage across varied profiles and excavation geometries.
Its articulated boom is designed with an optimised reach, providing complete coverage even in irregular or expansive headings. The system supports remotecontrolled spraying, enabling the operator to remain at a safe distance while still executing accurate, uniform application. The nozzle and delivery design are tuned for efficiency, minimising overspray and reducing material waste while achieving a uniform coating.
ProShot is suitable for both primary and secondary reinforcement efforts, including mesh encapsulation and wall sealing. Its flexibility and control Getman says make it an essential component of any highperformance ground support plan.
Together, ProMix and ProShot offer a
With the newly developed ProMix concrete transporters and the ProShot application system, Getman offers an integrated approach coordinated, systems-based approach to ground support.“ From transport to placement, they enable a streamlined workflow that boosts productivity and responsiveness. This level of integration is critical for today’ s deeper mining environments, where reliability, repeatability, and process control are foundational to project success.”
Normet’ s new Spraymecs
In March 2025, Normet, a global leader in concrete spraying solutions for underground mining and tunnelling, announced the launch of the Spraymec 4100 and Spraymec 5100- two concrete sprayers designed to enhance productivity, quality, and reliability in underground construction projects. These new models are purpose-built with selected field-proven Normet solutions to deliver high-quality sprayed concrete linings in small to large-sized tunnel profiles, including in mines.
The Spraymec 4100 is a robust, selfpropelled, rigid-frame concrete sprayer featuring a 4WD carrier with 4-wheelsteering and crab-steering for optimal manoeuvreability in confined underground spaces. It is equipped with a closed-loop control system, ensuring precise and fully synchronised accelerator dosing and a low-pulsation concrete pump for uniform application. A high-capacity onboard compressor and a precise and easy-to-use spray boom with a vertical reach of 10.5 m further enhance efficiency and spraying accuracy.
The Spraymec 5100 has highly manoeuvrable spray manipulator with a maximum vertical reach of 14 m. The closedloop system automatically adjusts pump output and accelerator dosage in real time, ensuring consistently high-quality spraying results. With an onboard compressor, lowpulsation pump, and reinforced concrete delivery system, it provides maximum reliability in demanding environments.
“ The launch of the Spraymec 4100 and 5100 represents a significant step forward in our commitment to delivering reliable and efficient concrete spraying solutions,” said Toni Huttunen, Product Line Director of Tunnelling Sprayers at Normet.“ These machines are designed to meet the evolving demands of tunnelling projects by enhancing safety, quality, and productivity.”
Both machines have Normet’ s NorSmart control and diagnostics system for seamless operation and effortless troubleshooting, as well as the Normet connectivity with access to Normet portal, with a readiness for Normet’ s analytics and remote monitoring solutions.
Normet adds:“ With the introduction of the Spraymec 4100 and Spraymec 5100, Normet strengthens its commitment to ensure that customers across a wide range of tunnelling projects have access to reliable, high-performance equipment. As Normet continues to expand its tunnelling portfolio, these advancements demonstrate the company’ s dedication to meeting the evolving needs of its customers and contributing to the success of tunnelling projects worldwide.”
Weber Mining on pre-consolidation in raisebore shaft at Saucito
The Saucito mining unit, a silver and gold operation in Mexico owned by Fresnillo, needed to develop a raisebore shaft, a project that required precise ground consolidation due to the site’ s geological conditions. Following a comprehensive analysis, Weber Mining designed a pre-consolidation strategy based on the challenges identified during the planning phase and the ground conditions. This approach was structured into two key segments: one from the surface down to 200 m, and another from 330 to 420 m. The need for controlled and localised consolidation led to the implementation of advanced injection techniques to ensure shaft stability without compromising the integrity of the rock formations.
The main challenge of the project was the heterogeneity of the ground in the intervention area. Loose and altered strata formations were identified, requiring specific treatment to prevent undesirable movement during drilling and later during shaft operation. Based on these findings, Weber Mining proposed a segmented preconsolidation strategy focused on treating only the most compromised zones.
The pre-consolidation was divided into two segments:
• 0 to 200 m: This zone exhibited significant alteration of near-surface strata, requiring more aggressive treatment to prevent water migration and stability loss during shaft advancement.
• 330 to 420 m: At this depth, the ground showed more pronounced fracturing, increasing the risk of wall instability. Consolidation in this zone had to be particularly well-controlled to avoid unwanted resin migration into non-targeted layers.
The choice of resin was critical to the success of the process. A low-viscosity organo-mineral resin was selected, specifically designed to migrate through small fractures and consolidate formations. This resin enabled deep penetration, essential for reinforcing the most altered strata.
Additionally, a Self-Drilling Anchor( SDA) rod column was used to allow continuous
International Mining | AUGUST 2025