Marking a half century since the development of horizontal directional drilling, also known as HDD — a significant as a step in the evolution of the trenchless technology method used in modern underground construction — Trenchless Technology magazine has produced a special podcast series on the history and impact of the drilling technique and the advances construction engineers have made with it over the decades. In one episode of the podcast series, Professor Samuel Ariaratnam (pictured), chair of the Fulton Schools construction engineering program, talks about the early days of HDD education and provides his perspective on the ongoing globalization of HDD.