Nigeria’s Dangote refinery is aiming for a dual listing on the London and Lagos bourses by the end of this year, a senior executive said on Tuesday. "We have listed all our businesses," Devakumar Edwin, Dangote refinery executive, told Reuters. "The NSE (Nigerian Stock Exchange) will not have adequate depth to handle exclusively the petroleum refinery. We would have to take it to LSE (London Stock Exchange) but also list in NSE."