Nigeria’s Dangote Petroleum Refinery is preparing for what could become Africa’s largest initial public offering, with CEO David Bird saying the October listing is designed primarily to let Nigerian investors share in the company’s growth. The refinery has applied to Nigeria’s Securities and Exchange Commission for a potential $5 billion IPO, although the final size has yet to be decided. Bird said an international listing, possibly in London, is at least three years away, pending a longer track record of financial performance. Investor interest has reportedly been strong, following a $2.5 billion private placement in July that valued the refinery at about $40 billion. Dangote also plans to double refining capacity to 1.4 million barrels per day within three years, using IPO proceeds and debt to help finance the expansion.