Our impregnated bit HQ3 NF3-4, used in a diamond core drilling project in Armenia, has broken a world record, for it drilled nine holes up to 1533.5 meters of depth and was used for periods up to 2 months. This geological exploration project, taken by Armenia Major Drilling Group, used our bits for drilling basalt (abrasive) sedimentary shale and siltstone (non-abrasive), whose hardness is medium to soft.