Two of the world's biggest cement makers have announced details of their proposed merger. Lex's Oliver Ralph asks Joseph Cotterill whether they will be enough to assuage competition regulators.<br /><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
