Peggy Hagerty Duffy, P.E., D. GE, is a graduate of the University of Louisville and has over 30 years experience in the fields of geotechnical engineering, environmental services, and construction materials testing.  She has performed site investigations in a wide variety of geologic settings throughout the upper South and Midwest, and she has evaluated and treated hundreds of sinkholes.  Hagerty Duffy also oversees all research, technical activities, and governmental relations for the International Association of Foundation Drilling (ADSC). She is a member of the Board of Trustees for the Academy of Geo-Professionals (AGP) of ASCE.