Sheldon Adelson and Paul Steelman, were both involved in the building industry in what area?
Sheldon Adelson:  He is the founder, chairman and chief executive officer of Las Vegas Sands Corporation, which owns the Marina Bay Sands in Singapore, and is the parent company of Venetian Macao Limited, which operates The Venetian Resort Hotel Casino and the Sands Expo and Convention Center.
i don't know