Vitrification technologies provide a means for the destruction of hazardous organics, for the immobilization of radioactive waste and heavy metals, and for dealing with difficult mixed wastes. A PAM (Plasma Arc Melter) system is located at the Korean Atomic Energy Research Institute (KAERI), Taejon, Korea. The melter system was built to demonstrate the applicability of this technology for the treatment of hazardous and low-level radioactive waste from Korean nuclear facilities. To study the treatment of various wastes, including a radioactive low-level waste and a mixed waste, pilot-scale vitrification tests were conducted using a surrogate waste, such as combustible material, solidified resins in cement, inorganic materials, steel, glass, and solidified boric acid cement in a plasma arc melter system. The results of analyses of samples of a vitrified product, using the off-gas collected during the test period, show that a greater part of mixed waste and low-level radioactive waste generated in a nuclear facility can be treated; in addition, it accommodates a wide range of soil and waste types and debris, which eliminates the need for handling, sorting, and size-reduction activities. Conclusively, PAM-200 can treat radioactive and toxic wastes, as well as a mixed form of both; the off-gas can be processed efficiently by operating the system at a negative pressure.