The four engines revved up to their maximum 8,800 horsepower and then, at fifty-second intervals, the planes slowly started off down the mile—and-a—half runways. Though the thunderous pounding of piston engines was heard instead of the whine of jets, the Superfortresses were very much the ‘Jumbos’ of their day, dwarfing other bomber types and with extremely slender wings whose slight swaying seemed altogether inappropriate to the task of getting even the four massive engines airborne let alone the rest of the enormously long plane.
After that tragedy they began to probe every inch of ground with trench knives, gently working the knives in at an angle, hoping to hit only the sides of mines. This way they came upon many devilish little mines handmade from cottage cheese-type crocks and sealed with wax. Their only metal was the detonator, which was too small to be picked up by mine detectors.