Diamond Core Drilling Services
High-Recovery Geological Core Extraction
Premium Drilling provides premier Diamond Core Drilling services tailored for deep mineral exploration, geotechnical site investigations, and structural geology mapping across Zambia. Using industrial diamond-impregnated matrix bits and advanced wireline core barrel retrieval systems, our rigs extract continuous, intact cylindrical rock samples. This gives your exploration team and geologists undisturbed physical data on mineral grades, rock quality designations (RQD), and structural characteristics.
Core Capabilities & Technical Specifications
Depth Capacity: Deep-hole drilling capabilities ranging from **500\text{ m} to 1,200\text{ m}+ depending on required core diameters.
Standard Core Sizes Offered:
- NQ: 47.6\text{ mm} core diameter — ideal for deep exploration and resource definition.
- HQ: 63.5\text{ mm} core diameter — standard for detailed geological logging and assay testing.
- PQ: 85.0\text{ mm} core diameter — selected for bulk sampling, soft rock zones, and geotechnical analysis.
Wireline Retrieval System: Rapid inner-tube retrieval via high-speed wireline winches without pulling the entire drill string, maximizing daily core recovery and minimizing site downtime.
High-Recovery Rates: Designed to achieve >95\% core recovery even in complex, faulted, or heavily fractured geological formations.
Key Applications
Resource & Reserve Definition: Essential for proving copper, cobalt, gold, and nickel mineral reserves to international reporting standards (e.g., JORC, NI 43-101).
Geotechnical & Structural Studies: Evaluating rock mass strength, fracture density, and fault planes for underground or open-pit mine design.
Deep Target Exploration: Following up on geochemical and geophysical anomalies at significant depths where shallow drilling methods cannot reach.
Why Partner with Premium Drilling for Core Drilling?
Undisturbed Sample Quality: Precise weight-on-bit and rotational speed controls deliver pristine core samples ready for immediate logging, splitting, and laboratory analysis.
Nationwide Operational Support: Strategically deployed from our operational hubs in Lusaka, Solwezi, Mansa, and Kasama, guaranteeing fast mobilization and full field support.
Complete Fleet Synergies: Combined with our 4-axle lowbeds for site mobilization and 21-ton excavators for drill pad preparation and environmental restoration.
Certified Operations: Fully compliant with WARMA Grade A and NCC 2C regulatory guidelines, maintaining rigorous environmental management and safety protocols on every site.