John Abele, Vermont
Abele's $640 million wealth is from the health care industry. He co-founded medical device manufacturer Boston Scientific in 1979, which provides less invasive treatments for patients. He retired in 2005 and eventually sold most of his shares.
Jacqueline Mars, Virginia
Mars's $28.1 billion net worth is thanks to her one-third holding of Mars Inc., the world's largest candy maker. Founded by her grandfather, she worked under the company for nearly 20 years and served on its board until 2016.
Advertisement