22/11/2020 Stati Uniti, Arizona “If you ever come across anything suspicious like this item, please do not pick it up, contact your local law enforcement agency for assistance” A construction crew found an unexploded howitzer shell at the Yuma Proving Ground in southern Arizona, shown above. Yuma Proving Ground’s explosives experts identified the ordnance as…
![](https://biografiadiunabomba.anvcg.it/wp-content/uploads/2020/11/de2x4kn-b3116891-05e5-4266-bfb4-33c01050e41c-716x356.jpg)