In Nigeria aerial photographs and other remotely sensed data can be obtained from Federal Survey Department, this unit acquires and archives aerial photograph of different parts of the country. Oil prospecting companies operating in Nigeria such as Shell Petroleum Development Company of Nigeria Limited, Elf Plc, Chevron and AGIP also acquires and store aerial photos. Satellite imageries (particularly Landsat and SPOT) may be obtained through Regional Centre for Training in Aerospace Surveys (RECTAS), Ile Ife; international Institute for Tropical Agriculture (IITA), Ibadan; Federal Department of Water Resources, Kaduna; etc. even if required remotely sensed data is not in stock the imagery of an area on the earth’s surface which is of particular interest to a client, SSC satellitbild can programme the SPOT satellite to record an image of the area in question provided that he (the client) can identify the area in terms of latitude and longitude.