is the Research Scholar and Co-Director of the Global Waste Research Institute Research Scholars. Dr. Yesiller fields of interest are geotechnical engineering, geoenvironmental engineering, waste management, properties and engineering behavior of different types of wastes, landfills, containment materials and facilities, GCLs and geomembranes, air emissions, beneficial reuse of wastes and byproducts in civil engineering applications, disaster debris and wastes and nondestructive testing.