A vast array of weaponry has been used in the last seven months of conflict in Gaza, so much so that UN mine action experts say that land potentially contaminated with unexploded ordnance will take years to make safe.Patrick McCabe is a UN Mine Action Service (UNMAS) veteran whose job is to help civilians move around Gaza as safely as possible, now and when the fighting ends.He spoke to UN News’s Daniel Johnson, about what he’d seen in the shattered enclave so far.