Dr. Samuel T. Ariaratnam is an internationally-renowned leader in horizontal directional drilling and trenchless engineering applications. His research in this area has created new technologies in construction engineering and applications of underground trenchless techniques. He has published over 300 technical reports and papers, has co-authored eight textbooks, and holds four patents. His contributions to engineering have been recognized by numerous organizations, including the American Society of Civil Engineers (ASCE), which awarded him the prestigious John O. Bickel Award and the Arthur M. Wellington Prize. Dr. Ariaratnam was elected as a fellow of the ASCE in 2015.