Lafarge, the global cement producer, plans to combine its Nigerian and South African operations. Lex's Robert Armstrong and Joseph Cotterill discuss whether this can challenge the African dominance of Dangote Cement.<br />For more video content from the Financial Times, visit http://www.FT.com/video<br /><br />Subscribe to the Financial Times on YouTube; http://goo.gl/vUQx5k<br />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes
