Milane Duncan Frantz – $6 Billion
After Milane’s dad died in 2010, his company, Enterprise Products Partners, was handed down to his children. The company specializes in pipelines and has close to 50,000 miles of pipelines running through the company. Its head office is located in Houston. Interestingly, the company is also responsible (they own!) for the largest oil storage facility on the Gulf Coast. Milane is the director of the Duncan Family Foundation as well as a board member of Hermann Park Conservancy.

Milane Duncan Frantz 6 Billion Dollars
