Once, I was supposed to take a train from Munich back home to Padova. It's a fairly long train ride, but quite pleasant, as it's very scenic, and of course on trains you're free to move around, buy food, read, use electronics, and so on. It turned into an epic odyssey because they rerouted the thing through... Villach and Tarvisio in for northeastern Italy, due to a bomb near the tracks somewhere in northern Italy. That was a bit too far.
I wonder if that fraction has moved much. Wikipedia in the subject of the Ardennes, Verdun, and Unexploded Ordinance (UXOs):
> In the Ardennes region of France, large-scale citizen evacuations were necessary during MEC removal operations in 2001. In the forests of Verdun French government "démineurs" working for the Département du Déminage still hunt for poisonous, volatile, and/or explosive munitions and recover about 900 tons every year. The most feared are corroded artillery shells containing chemical warfare agents such as mustard gas. French and Flemish farmers still find many UXOs when ploughing their fields, the so-called "iron harvest".
I know these are often big bombs but 900 tonnes a year‽
Remember the Allies alone dropped _millions_ of tons of bombs, yet alone the tens (hundreds?) of millions of tons of shells fired across battlefields, and we've not even started counting grenades and other similar smaller ordinance.
900 tons is _nothing_ compared with the sheer amount fired in the European theatre, especially across both World Wars.
Also remember many of the prolonged battles were essentially fields of potted mud: along with period fuses, many of the shells simply landed in soft mud to slowly sink in.
I think it's definitely the case that many of those less involved in the European theatre (v. the near universal conscription of men in Europe) don't realise how intensive much of the fighting here was. These are wars that went on for years, often with the front lines scarcely moving for months, with continuous bombardment for the entire time.
Now you understand why mines are outlawed almost everywhere. Cleanup will never be done. Its just started in Bosnia for instance, with decades of work ahead of us.
If we assume (somehow!) half of that was dealt with quickly, that leaves 500,000 tons of UXO. If we assume 1000 tons are found per year, that's still 500 years to tidy up.
Across both wars the total may well be closer to 100M than 10M, so then that makes it 5000 years.
A couple of years ago an explosion went wrong, somebody died, and they built a new facility.
These are WWI ordnances. Ardennes and especially Verdun was the theather of one of the largest battle of the western front. That's trench warefare at it's worth. The whole region was chock-full of shells.
I believe most of the stuff dug up that's called "Iron Harvest" in Northern France is WW1 artillery rather than WW2 bombs
It's a tool that will super quickly unscrew the detonator before it can fail and lead to detonation.
But I dunno what would be worse. Clearing unidentified mines from hardscrabble or trying to dig located mines out from under roots (especially when they won’t locate every last one of them)
the idea is less about identifying bombs for removal than just as a way to mark areas dangerous or safe according the presence of metals in the soil
Here, I found the company  via a 2004 slashdot thread 
Looks like they closed shop in 2008, according to a wiki citation they are mentioned in a comparison of landmine detection methods, where as risks it mentions "indeterminate false positive" and "Issues of ecological control of a new genetically engineered species" 
From reading  it sounds like landmines are not the only source of nitrous oxide in the environment, so the flowers may trigger without the presence of mines
We have looked at some mine-sweeping tech that might, for instance, be an effective way to remove a small number of mines from a large area. Knowing that this area is mostly clear as opposed to saturated might make it cost effective to sweep.
Aren't there areas so riddled that a single mine detonating can end up triggering others? Or have I been watching too many movies?
Sadly, the primary victims seem to be children, who come across these 'interesting' metal objects in the ground, or inadvertently tread on them while playing or working the fields.
More needs to be done by the forces who planted them to clear designated minefields after the conflict has ended.
Most of those are from Afghanistan and Syria, with a steep drop off and followed by Ukraine, Iraq.
I don't think vietnam-area or koreas feature in the top 10 anymore.
What is South-East? Did you mean Southeast-East? Korea is an East Asian nation. Vietnam is a Southeast Asian nation. South Asians are indians, pakistanis, etc. As to your point/question about landmines casualties in korea and vietnam, you are incorrect. The landmines in korea are in the DMZ ( demilitarized zone - which is the misnomer as it is the most militarized zone ). As for vietnam, laos, etc, most of their deaths are likely due to unexploded bombs.
> I am thinking that Afghanistan etc. may also figure quite high in the statistics.
Most landmine casualties are probably in afghanistan, iraq, etc. Current or recently active war zones where the situation hasn't be pacified or settled.
* There Are Still Thousands of Tons of Unexploded Bombs in Germany, Left Over From World War II
Probably a typo, but is this a special case in imperial measurement where bomb-pounds are heavier than regular pounds?
It's hard to think that something so horrible as ww2 happened in fairly recent history. These unexploded bombs serve as a good reminder of that.
Update: Around 7000 people were evacuated before the disarming took place.
The last paragraph in the article is the most important:
Almost 75 years after the end of the war, unexploded bombs are frequently found in Germany. Disposing of them sometimes entails large-scale evacuations
as a precaution.
OK, evacuating 14k people is a bit unusuable, but we find and defuse WWII bombs roughly whenever we have a relatively big construction site.
Besides, this doesn't only happen in Germany as bloomberg writes. Europe is a little bigger then just Germany...
We had a rather large bomb (3.8t) the previous year in my city, a large radius (1.5km) was evacuated and the disposal team went in (opting to forgoe the protective gear as the bomb was too large anyway) and successfully disarmed it. It's simply pure luck.