London-listed Petra Diamonds has shared its plan for a sustainable reduction of $30-million a year in operating costs from the 2025 financial year, as well as a smoothing of its development and sustaining capital profile to about $100-million a year at its South African operations to target free cash generation through the cycle. At an investor day presentation, in London, England, on June 27, Petra said approved extension projects were expected to be self-funded, with production growth to over 3.4-million carats expected by the 2028 financial year.