ITC, Infosys, Mahindra Satyam and Coromandel International are some of the major private companies which have their offices in Secunderabad. Being the headquarters of South Central Railway, Secunderabad is a major centre for railway activity. Various industrial araes such as Bolarum, Moula-Ali, Nacharam, Uppal etc. are located in Secunderabad. Secunderabad Cantonment Board houses a large number of defence units. Various units of the Department of Atomic Energy (DAE) such as Atomic Minerals Directorate for Exploration and Research (AMD), Nuclear Fuel Complex (NFC), ECIL etc. are also located close to Secunderabad