The first drill programme undertaken at the Jacks copper project in Zambia has intersected significant copper mineralisation in all four diamond drill holes, says AIM-traded mineral exploration and development company Tertiary Minerals, whose strategic focus is on energy transition metals. The Jacks prospect lies in exploration licence 27069-HQ-LEL, which covers 141.4 km2 and is located 85 km south of Luanshya, in Zambia.