Billionaire Diane Hendricks, chairman and sole owner of Beloit-based construction materials company ABC Supply, reflected on her entrepreneurial journey during a recent appearance at Concordia University Wisconsin in Mequon. Hendricks, who grew up on a Wisconsin dairy farm, is now, at 76 years old, considered the wealthiest self-made woman in the U.S. She co-founded ABC Supply with her late husband, Ken, in 1982 and has led the company since Ken’s death in 2007. She also manages and develops real estate as part of the Hendricks Holding Co. portfolio of companies. 

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