Pakistani hajj pilgrimages arrive at an airport terminal for first hajj flight to Saudi Arabia in Karachi on September 8, 2013. Millions of Muslims head to Makkah and Medinah, Islam's two holiest sites to attend the annual hajj. (AFP/Getty Images)
From underwater mining to luxury yachts, Mohammed Al Barwani has interests in a staggering range of industries. The chairman of MB Holding explains how he built the firm from scratch to become a billion-dollar player.