Mines still remain on the ground in Kosovo despite the UN claiming all had been found by December 2001 - Goden minefield in 2004 where HALO found and removed 253 AP mines
Landmines
Serb forces (the army, special police forces and paramilitaries) laid many large border minefields on the Albanian and Macedonian borders between 1997 and 1999, as well as further minefields in the interior either around their military posts or to deny access to Kosovo Liberation Army (KLA) patrols. Barrier minefields straddling the main supply routes were also laid quickly in June 1999 to inhibit the expected entry to Kosovo of NATO ground forces.
Cluster bomb sub-munitions
NATO’s bombing campaign against Serb military units and armour lasted 78 days in 1999. On some 333 target areas NATO dropped 1,392 bombs, containing 295,700 cluster sub-munitions. It is still unclear how many of the American and UK manufactured sub-munitions failed to explode, but some estimates put the “failure rate” at up to 20 percent. Those that failed to function either lay on the surface or penetrated the surface and were buried up to 50cm deep – all in a highly sensitive state.