We provide precision underground diamond drilling for resource definition, grade control and exploration, ensuring accuracy, safety and operational efficiency. Offering core sizes NQ, HQ and PQ, we employ triple tube recovery, directional drilling and wedging techniques to deliver high-quality core samples in a wide range of geological conditions. Our experienced crews adapt to confined environments, steep gradients and challenging formations, using specialised equipment and proven methodologies to maintain core integrity and maximise recovery rates.
We have extensive experience working in both established mining operations and remote greenfield sites, allowing us to anticipate challenges and implement solutions quickly. This capability enables us to provide mining and exploration clients with reliable geological data that is critical for planning, resource modelling, compliance reporting and long-term operational decision-making. By maintaining stringent safety standards and a proactive approach to risk management, we ensure our work is completed on time, within budget and to the highest quality standards—even in the most complex underground settings.
We offer a full range of adaptable core sizes including NQ HQ and PQ to meet the diverse geological requirements of mining and exploration projects. This flexibility allows clients to optimise sampling based on ground conditions target depth and desired recovery quality.
Whether drilling in fractured formations or solid rock our teams apply the most suitable core size for each program. This ensures maximum sample relevance consistent data quality and efficient recovery across a wide variety of operational settings.
Triple tube recovery is essential for preserving core quality especially in fractured or fragile formations. At CDHD we use triple tube techniques to maintain core structure improve sample integrity and reduce contamination. This method is particularly effective for geotechnical programs where accurate geological representation is critical for analysis and modelling.
By retaining the core’s original form our clients gain confidence in the data collected which supports better planning resource modelling and decision-making at every stage of the project.
Our directional drilling services enable precise targeting of mineral zones by adjusting borehole paths with accuracy. Using wedging and navigation tools we can steer drilling away from obstructions or into specific zones of interest without starting a new hole. This approach saves time and cost while increasing drilling efficiency. It is particularly useful in deep or structurally complex sites where straight-line drilling is not practical.
CDHD’s experienced crews ensure consistent performance while reducing geological disturbance and improving data accuracy.
Wedging and deflection are used to redirect boreholes without the need for additional setups or surface works. These techniques allow us to alter the drilling trajectory underground enabling multiple branches from a single parent hole. This approach improves access to targeted zones reduces program duration and supports better core recovery in complex formations.
CDHD applies the above methods with accuracy to maximise drilling success rates. It is a proven strategy for resource definition infill programs and expanding exploration coverage efficiently.
Explore our services, systems and proven track record in one comprehensive overview.
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