Episode 20: Earthbound Systems – Dams, Earthquakes, and Mining Disasters. Chapter 7 in Normal accidents

In this episode, we analyze Chapter 7 of Charles Perrow’s "Normal Accidents", which explores large-scale earth-moving systems such as dams, mining operations, and earthquake-prone areas. Unlike nuclear power plants or petrochemical industries, these systems are generally linear and less complex—yet they can still lead to catastrophic failures, particularly when multiple systems interact unexpectedly.

We discuss:

• Dams as high-risk infrastructure – despite being tightly coupled, dam failures are usually not "system accidents" in Perrow’s framework.
• The Teton Dam disaster (1976) – a case study in organizational failure, ignored warnings, and mismanagement.
• Mining as an inherently dangerous but loosely coupled system – why individual errors and organizational failures cause most mining disasters.
• How human activity triggers earthquakes, from dam-induced seismic activity to military and industrial underground testing.
• The eco-system accident concept – when systems like dams, mining, and urban development unexpectedly link together, creating new failure risks.
• The bizarre case of Lake Peigneur (1980) – how an oil drilling accident caused an entire lake to drain into a salt mine, swallowing land, barges, and even a tugboat.

Perrow uses these cases to illustrate how different types of risks emerge in earthbound systems, and how bureaucratic inertia, economic pressure, and lack of coordination can amplify small issues into large-scale disasters.

Disclaimer:
This podcast is an independent, AI-generated educational resource and is not affiliated with or officially endorsed by Charles Perrow or the publisher. While we strive to present accurate information, we do not take responsibility for any errors, omissions, or misinterpretations. Listeners are encouraged to refer to the original book "Normal Accidents" for a comprehensive understanding.

Source:
Perrow, C. (1984). Normal Accidents: Living with High-Risk Technologies.