Read this and never complain about the condition of your fields again. 2014 marks 100 years since the start of WW1. Last year, in Belgium and France, 176 TONS of unexploded munitions from WW1 were recovered from fields and towns that now occupy sites of WW1 battles. This amount is not unusual! It's been going on every year since the war ended. Most are recovered safely but every year, French and Belgian farmers get killed plowing in to them. Over one billion shells were fired and fully 1/3 of them never went off and they are still there. Most were duds because the soil they landed in was too soft to fire the fuse; the soil having been churned up by artillery barrages that lasted for days. Google Iron Harvest.