What did geotechnical design and construction look like in 1923? What's changed since then -- and what hasn't? In this series, member blogger Michael Bennett reviews the 1923 textbook "Foundations, Abutments, and Footing" to see what the practices of a century ago might suggest for the future. Part 1: "Soil Investigation"

A special guest lecturer presents his award lecture "Spooky Soil Mechanics: A More Ghoul-omb Approach"

The efforts to save the dam, its failure, the possible geotechnical mechanisms of the failure, and the horrific consequences.