Unexploded ordnance
High Quality Content by WIKIPEDIA articles! Unexploded ordnance (or UXOs/UXBs, sometimes acronymized as UO) are explosive weapons (bombs, bullets, shells, grenades, land mines, naval mines, etc.) that did not explode when they were employed and still pose a risk of detonation, potentially many decades after they were used or discarded.
ISBN: 978-5-5111-8275-9