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Chris Pullam, Freelance Reporter
4:37 am CDT June 21, 2019
For Glenbrook North graduates Lyndsey (2013) and Carly Hanna (2006), running a business is in their blood, and radon is in the ground. After the sisters opened Hanna Radon Detection nearly two years ago, the total number of Northbrook businesses operated by the Hanna family jumped to three.