Types of iron. Pure iron is too soft and reactive to be of much real use, so most of the iron we tend to use for everyday purposes is actually in the form of iron alloys: iron mixed with other elements (especially carbon) to make stronger, more resilient forms of the metal including steel.
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Kenneth Dart net worth: $5.8 Billion. Kenneth Dart Net Worth: Kenneth Dart is an American-born businessman who has a net worth of $5.8 billion. Born in 1955, Kenneth Dart earned his mechanical engineering degree from the University of Michigan in Ann Arbor in 1976. He went to work for his family's company, the Dart Container Corporation, which was originally founded in the late '30s in Michigan. Dart worked his way up to company president within a decade; by 2001, he gave the role to his brother and joined the business' board of directors.