The "missing" rations have been the subject of investigation—both at the time and subsequently. Dudley McCarthy, the Australian official historian, concluded that the reason most likely lay in "faulty work by inexperienced staff". Rowell's investigation, made at the time, determined that the rations had been dispatched. The second and much larger, dry lake bed, Myola 2, was discovered by a patrol on 21 August. At this time, maps showed and air crew expected only one. John Moremon hypothesises that drops were likely made at the wrong one. Rowell noted in his memoirs that "all through the New Guinea Campaign cargo dropping remained notoriously unreliable".