Perma-Fix Environmental Services, Inc. is an environmental and environmental technology know-how company. It operates in three segments: The Treatment Segment (Treatment), the Services Segment (Services) and the Medical Segment (Medical). Treatment includes nuclear, low-level radioactive, mixed (waste containing both hazardous and low-level radioactive waste), hazardous and non-hazardous waste treatment, processing and disposal services primarily through approximately four licensed and permitted treatment and storage facilities held by its subsidiaries. Services include on-site waste management services to commercial and government customers, technical services and nuclear services. The Medical segment includes research and development (R&D) of a new medical isotope production technology by its Polish subsidiary, Perma-Fix Medical S.A. (PF Medical). Its Treatment and Services provide services to research institutions, commercial companies, public utilities and governmental agencies.