STP 1374, written by worldwide experts in their field, examines a broad range of topics covering the latest geotechnical engineering developments in high water content materials. Emphasis is given to construction on marginal lands and disposal of high water content waste materials. Various types of high water content materials are explored, including peats and organic soils, soft silts and clays, bentonite slurries, paper sludges, wastewater sludges, dredgings, lime wastes, and mine tailings. Papers also explore geotechnical problems, including handling and disposal, dewatering, stabilization, hydraulic performance, settlement, stability, in situ testing, and construction. 26 peer-reviewed chapters in 4 sections cover: • Fundamentals, Theory, and Modeling • Laboratory Investigations • Field Performance • Case Histories This publication will benefit engineers, including geotechnical, geoenvironmental, environmental, civil, mining, highway, military, materials, and consultants; also grading contractors.