Diamond core drilling is a common technique in the mining industry for extracting core samples. It is ideal for geotechnical work in semi-consolidated/cemented rock to hard rock environments. Downward pressure and high rotation rates advance drill bits that are faced with diamond impregnated steel. Down pressure and fluid circulation are carefully monitored during drilling. Rock core samples are typically returned using an efficient wireline system. There is a wide selection of drill bits to choose from based on rock types and core sizes. Cascade typically uses a wireline coring system for hard rock applications to obtain core samples and Rock Quality Designation (RQD).
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Ideal for drilling where undisturbed core sampling is required
Ideal for unconsolidated alluvial deposits like sand, silts and clays
Ideal for hard and soft lithology with multiple rotary methods available.
Ideal for smaller sites and produces less waste with more samples