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<<< Back to Trenching and Excavation Printing Instructions Credits THANKS TO OUR CONTRIBUTORS Technical Editorial Board: Editor: OSHA Directorate of Science, Technology and Medicine; Washington, DC Alliance Members: Rick Callor, Washington Group International (WGI); Boise, ID Claude Gross, Construction Coordinator, Bluegrass Community and Technical College, SkillsUSA; Lexington, KY Richard Marshall, Safety Director, Richard Goettle, Inc, ADSC: International Association of Foundation Drilling; Cincinnati, OH William Odenthal, Safety Director, Nicholson Construction Co., ADSC: International Association of Foundation Drilling; Cuddy, PA Colin Perkins, Corporate Safety Director, Condon-Johnson & Associates, Inc, ADSC: International Association of Foundation Drilling; Oakland, CA John Roe, Vice President, Malcolm Drilling Company, Inc, ADSC: International Association of Foundation Drilling; San Francisco, CA Jimmie Tullis, Atmos Energy, National Safety Council (NSC); Franklin, TN

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