Unserviceable hand grenades

In Gibraltar an explosion took place in the laboratory, which blew off the roof, and killed two men employed in proving and cleaning unserviceable hand grenades. The consternation was great, as the magazines were very near. There were three or four pounds of gun-powder, which had been saved from the hand grenades, and, it is supposed, from the pieces picked up of a shattered grenade, that the accident occurred from its imperfect formation, and from the coat of rust accumulated, which, with a bit of iron found within, might have ignited and caused the accident. About a week after this, three gunners were killed by the bursting of a gun in the excavation of the rock, and were buried in one grave.