This morning, slipped in the Altenessen district without a mowing vehicle on the Zweigert bridge the Emscher dam . Due to the relatively softened by the floods and the steep terrain soil threatened the tractor is equipped with a special arm to sink into the Emscher . The driver tried to arm grip on the ground in order to stabilize its position . Shortly before the water surface of the tractor by experts from the fire service could be secured with three steel cables . The mowing vehicle was successfully rescued after several hours .