[jmacusa]

Small potatoes. I believe the estimate for artillery shells fired daily in WW1 was around a million especially during the Battle of Verdun and the fighting on the Somme. That stuff is still in the ground, still dangerous and will probably be so for another 100 years.

[DuncanWaring]

“Iron Harvest”

https://www.thevintagenews.com/2016/11/11/the-annual-iron-harvest-of-unexploded-shells-from-the-wwi-battlefields/?chrome=1

[Bull Snipe]

The French Army, since 1952, has stationed an EOD unit at Verdun. Driving a different route every day of the week, they stop along the road and pick up unexploded shells the farmers have found in their fields and stacked by the road.