ASX-listed Orion Gold has started a major new phase of drilling at its Prieska zinc-copper project, in the Northern Cape, where the first two holes of the programme are designed to test mineralisation in the north-west target area. The programme will further evaluate the main deep sulphide target below the historical mine, which is expected to form the cornerstone of the company’s development strategy. The deep sulphide mineralisation is the down-dip extension …