Land-mines, explosive remnants of war is a controversial topic for many Governments, including Vietnam, a daily threat to many people. To overcome the contamination of remnants of war has been implemented by the Vietnamese engineering soldiers.
According to the report from the State Steering Committee of the National Action Program to prevent and recover the effect of bomb and mines after the war, the number of bombs, mines, ammunition used by the United States in Vietnam were over 15.530 million tons (about 7.8 million tons dropped by aircraft and 7.5 million tons used on the ground), more than 3.9 times higher than World War II, more than 12 times higher than the Korean War.
There are about 350 to 800 thousand tons of weapons and bombs left over, including all kinds of bombs, cluster bombs, b bombs regularly, missiles, mines, first artillery, mortars and other ordnance.
Preliminary investigation of Technology Center for Bomb and Mine Disposal (Army engineers), land area still contaminated by mine and bomb in Vietnam is about 6.6 million ha (almost 20% of total area).
With such huge volumes, Vietnam still take many decades at a cost of hundreds of new trillion to overcome the contamination of explosive remnants after war.