World's 10 richest billionaires
8. Lakshmi Mittal ($19.3 billion). Mittal, 57, is an Indian industrialist based in the United Kingdom. He is the chairman and CEO of ArcelorMittal, the largest steel company in the world. As a child he slept on bare floors in India, but his father started an oil company before becoming a partner in a steel firm that made the family a fortune. Getty Images
