Dees Hennessey, Inc. Founded over 30 years ago, Dees Hennessey, Inc. (DHI), has specialized in shotcrete almost from the beginning. By shotcreteweb|2022-02-16T16:50:43+00:00January 6th, 2018| Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkEmail About the Author: shotcreteweb