Unexploded ordnance (UXO) is any sort of military ammunition or explosive ordnance (EO) which has failed to function as intended. It includes sea mines or shells used by the Navy, mortar bombs, mines, artillery shells or hand grenades used by the Army; bombs, rockets or missiles used by the Air Force; and many other types of ammunition and explosives including training munitions. EO that has functioned yet contains residual explosive or chemical warfare agent is normally treated as UXO. Derelict, discarded or abandoned explosive ordnance (AXO) is also treated similarly to UXO.
If disturbed (moved, picked up, played with, kicked, thrown, etc.), UXO may explode without warning. Any item of UXO that is found must not be handled by members of the public.
The size or shape of any item of ammunition does not indicate its potential danger. Quite small items can kill and maim if handled. It must be remembered that explosives are unstable compounds that become more sensitive as they age.
For further information, please refer to the Types of UXO page within this website.
In Australia, UXO contamination has arisen mainly as a result of military training activities. In the past, large numbers of ranges and training areas were approved for use in many areas of Australia. As a result, there are now a number of sites around Australia which are affected by UXO.
Many areas within Australia have been used for military training since European settlement. During World War 2, when Australia was fighting for its survival against invasion, thousands of Australian and Allied personnel trained here in preparation for operations in New Guinea and the South West Pacific. In addition, numerous bases were established to support military operations and strikes against the Japanese.
Camp sites and training areas were located throughout the country with firing ranges established for artillery, tank, infantry and aircraft live firing and bombing practices.
With such a large number of military personnel within Australia, there is ongoing potential for discarded and unexploded ordnance to be located in the vicinity of these areas.