DFI Deep Foundations Beware of the Unknown ® MAY/JUNE 2023 THE MAGAZINE OF THE DEEP FOUNDATIONS INSTITUTE SPECIAL ISSUE The Dirty Language of Soil Mechanics Cone Penetration Testing for Rigid Inclusions Users Groups Advance Testing Methods Sharing Geotechnical Data with Geosetta E E C I A F A R T U S B U S R A A C H T C R Z I O N