Perma-Fix Environmental Services, Inc., through its subsidiaries, operates as an environmental and technology know-how company in the United States. It operates in three segments: Treatment, Services, and Medical. The Treatment segment offers nuclear, low-level radioactive, mixed waste, hazardous and non-hazardous waste treatment, and processing and disposal services through treatment and storage facilities. This segment is also involved in the research and development activities to identify, develop, and implement waste processing techniques for problematic waste streams. The Services segment provides technical services, which include professional radiological measurement and site survey of large government and commercial installations; integrated occupational safety and health services; consulting, engineering, project and waste management, environmental, decontamination and decommissioning (D&D) field, technical, and management personnel and services; nuclear services, including technology-based services comprising engineering, D&D, specialty, construction, logistics, transportation, processing, and disposal; and remediation of nuclear licensed and federal facilities, as well as cleanup of nuclear legacy sites. This segment also owns an equipment calibration and maintenance laboratory that services, maintains, calibrates, and sources health physics and industrial hygiene, as well as customized nuclear, environmental, and occupational safety and health instrumentation. The Medical segment is involved in the research and development of medical isotope production technology. The company's Treatment and Services segments provide services to research institutions, commercial companies, public utilities, and governmental agencies through direct sales to customers or through intermediaries. Perma-Fix Environmental Services, Inc. was founded in 1990 and is headquartered in Atlanta, Georgia.