Rock Solid Leaders

Matt Silveston

ROCK SOLID LEADERS goes behind the scenes with the experts and executives shaping today’s infrastructure. MATT SILVESTON hosts the podcast and highlights geotechnical innovators & industry leaders as they share lessons from major projects, ethical crossroads, and leadership under pressure. Each conversation uncovers how judgment, and technical skills combine to build resilient projects. Guests share candid stories of navigating complex challenges, balancing risk with vision, and leading teams where stakes are measured not just in dollars, but in public trust and long-term resilience.

  1. 17 Jul

    Duncan Wyllie Discusses Engineering Uncertainty

    In this episode of Rock Solid Leaders, Matt Silveston speaks with Duncan C. Wyllie, Ph.D., P.Eng., Principal Engineer with Wyllie & Norrish Rock Engineers Ltd., about risk management in geotechnical engineering. Dr. Wyllie explains that geotechnical risk is not defined by a factor of safety alone. It requires an understanding of both the probability of an event and the consequence if that event occurs. He discusses the importance of quantifying risk where possible, including the use of risk frameworks such as FN charts. The conversation also addresses one of the central challenges in geotechnical practice: making decisions with incomplete information. Dr. Wyllie discusses the limits of subsurface investigation, the danger of assuming conditions are uniform, and the need for careful field judgment. He shares examples from rock engineering where surface conditions appeared competent, but subsurface conditions told a different story. The discussion moves into practical lessons from rock slopes, rock anchors, blasting, long-term weathering, and maintenance. Dr. Wyllie emphasizes that geotechnical risk does not end when construction is complete. Rock, soil, water, ice, roots, and time continue to affect performance long after a project is built. The episode also includes a direct discussion on language in geotechnical reports. Dr. Wyllie identifies “assume” and “guarantee” as words that deserve particular caution because they can imply a level of certainty that geotechnical engineers often do not have. This episode serves as a preview of Dr. Wyllie’s GeoVirginias presentation, Risk Management for Geotechnical Engineering, and provides practical insight for engineers, owners, public agencies, and younger professionals learning how to evaluate and communicate risk.

    Duncan Wyllie Discusses Engineering Uncertainty

About

ROCK SOLID LEADERS goes behind the scenes with the experts and executives shaping today’s infrastructure. MATT SILVESTON hosts the podcast and highlights geotechnical innovators & industry leaders as they share lessons from major projects, ethical crossroads, and leadership under pressure. Each conversation uncovers how judgment, and technical skills combine to build resilient projects. Guests share candid stories of navigating complex challenges, balancing risk with vision, and leading teams where stakes are measured not just in dollars, but in public trust and long-term resilience.