GeoSupport 2004 discusses the analysis of foundation systems used in a variety of civil engineering projects in different geologic settings in both soil and rock. The Proceedings provide readers with improved methods of construction, innovative solutions to save costs and time in construction. Case studies of real projects, methods of analyzing difficult earthworks and underground construction, and valuable guidelines are given for application of these methods to future projects. The Proceedings are from the Geosupport Conference: Innovation and Cooperation in the Geo-Industry, which occurred January 29-31, 2003 in Orlando, Florida. This Geotechnical Special Publication is essential for Geotechnical, Structural, Forensic, DOT, Federal Highway Administration, FEMA, FAA, FERC, EPA, and DOE Engineers. Topics covered include: geosupport systems; drilled foundations; micropiles; grouting; deep mixing; anchors; and soil nailing.