Challenging mining applications such as shaft sinking and mine development require a team built on experience and institutional knowledge, driven by close client partnerships, says Cementation Africa new business director Graham Chamberlain.

For Cementation Africa, formerly known as Murray & Roberts Cementation, innovation is firmly rooted in experience, strategic partnerships, and a culture of continuous improvement.

“Our many years in the mining industry, where we work on complex and lengthy projects, have taught us that collaboration is always the most effective way to overcome the challenges that every project presents,” says Chamberlain.

He explains that understanding and mitigating risk lies at the core of the company’s work, whether developing shafts, constructing underground infrastructure or undertaking strategic rehabilitation of critical elements such as ore passes. By combining practical on-the-ground experience with a deep understanding of tools and technologies, Cementation Africa partners with global OEMs to refine and develop equipment to enhance safety and productivity, particularly in high-risk operations.

This approach is especially important given that every project presents a unique combination of factors - from natural ground conditions to corporate culture and operating environment. These variables require tailored solutions, reinforcing the need for collaboration, adaptability and innovation at every stage.

Among the advances in best practice is the integration of directional drilling into the raiseboring process, significantly improving accuracy, reducing risk and providing greater financial predictability.

Safety has also been improved through the use of remote shotcrete lining technology for shaft concrete lining, which removes workers from high risk contact areas and enhances overall operational safety.

“We have significantly evolved the way we use drill rigs in our shaft sinking operations,” says Chamberlain. “For many years, foot-mounted drill rigs were the standard; but in our drive to remove people from hazardous, high-energy zones, we now suspend the drill rigs beneath the shaft-sinking stage.”

These rigs have progressed from pneumatic and hydraulic models to fully electro-hydraulic systems. Mucking has also seen innovation with the adaption of the hydraulic excavator design. In addition, the pneumatically operated Brutus clamshell mucker - widely used in North America - was introduced by Cementation Africa into common use in Southern Africa.

An essential aspect of shaft sinking and mine development is the concrete used to line shafts, haulages, and other critical mine infrastructure. Chamberlain highlights that advancements in cement and concrete technologies, along with improved methods of material transfer, have been effectively harnessed to enhance performance, safety and efficiency on site.

“While ordinary Portland cement was used in earlier days, we have taken full advantage of the many scientific advances in the cement industry, including admixtures and plasticisers, to achieve superior results in the placement and final strength of concrete,” he says. “Even our placement methodologies have evolved significantly, with the use of receptacles now replacing traditional slick-lines for improved efficiency and control.”

The company asserts that its proactive safety innovations have set new standards for underground mining environments across the continent.