London, United Kingdom
+44 203 9165708
Partners
Welcome to GT Mining Ltd
GT Mining Ltd provides rock stress measurement, support design and instrumentation, geotechnical audits, short encapsulation rockbolt pull testing and training.
With over 35 years of operational and consulting expertise in mining and civil rock mechanics, our experience spans mines, tunnels, shafts, and caverns worldwide. Throughout this extensive career, we have held diverse roles across both operational and consultancy sectors, including significant contributions in rock stress measurement, instrumentation, and related projects with SRK Consulting.
Our proven track record reflects a commitment to technical excellence, innovation, and practical solutions tailored to the complex challenges of underground environments.
Design by Measurement Philosophy in Soft Rock
Although initial support design may be undertaken using calculation and/or computer modelling, GT Mining use a design by measurement approach to finalise the rock bolt pattern and to validate computer models.
GT Mining provides a complete package for the introduction, or upgrading of roof bolting support and can also introduce complete roof control management systems aimed at improving safety and productivity.
The use of in situ monitoring to confirm support design and maintain safe working conditions is now established for rock bolting in difficult conditions and can be considered “world best practice”. This approach is considered by GT Mining to be a safe method of design and has been successfully applied in UK coal and soft rock mines, as well as in Europe, South Africa and India.
Support Consumable Selection and Testing
GT Mining has extensive experience in undertaking testing and assessment of support systems and can provide independent advice on rock bolt systems and selection. The general philosophy applied successfully by GT Mining to rock bolting in mines around the world is to apply stiff bolting systems to resist the effects of roof shear caused by horizontal stress and, through good load transfer characteristics, mobilise the effectiveness of the reinforcement elements. Resin bonded reinforcement systems, which are universally employed, rely on the efficiency of the load transfer from rock to tendon. The load transfer is the mechanism by which force is generated and sustained in the reinforcement tendon as a consequence of strata deformation.
In fully grouted rock bolt systems the load transfer mechanism is dependent on the shear stress sustained on the bolt resin and resin rock interfaces. In order to ensure the suitability of rock bolt consumables all aspects of the reinforcement system are specified and performance tests are carried out underground to confirm system performance in the prevailing strata. Other aspects of the design which are assessed include the profile of the rock bolt, the resin annulus, the effects of various borehole wall profiles generated with different drill bit types and the bolt installation method. Underground short encapsulation pull tests are carried out in the range of rock types present within the reinforced height to confirm system performance. Routine short encapsulation pull testing and roof core logging and testing are then used to confirm continued effectiveness in variable geological conditions.
GT Mining LTD has been a reliable partner for our construction projects. Their commitment to safety and efficiency is unmatched, and we’ve always felt confident in their expertise. It’s rare to find a company that combines technical excellence with genuine integrity.
James Whitmore
Whitmore Construction Ltd
From the very first consultation, GT Mining LTD impressed us with their professionalism. The team was transparent, responsive, and delivered exactly what they promised. Working with them has been a smooth and stress-free experience.
Sarah Bennett
Bennett Engineering Solutions
We needed a mining partner who could deliver results under tight deadlines, and GT Mining LTD exceeded expectations. Their efficiency and attention to detail saved us both time and money. I wouldn’t hesitate to recommend them.
David Clarke
Clarke Industrial Supplies
GT Mining LTD isn’t just a service provider—they’ve become a trusted partner in our long-term projects. Their innovative approach and consistent support have helped us grow steadily. We look forward to continuing this collaboration for years to come.
