sentences:  Trolleytrucks were used to carry dynamite over the Alps just after World War II due to the shortages of material that for a time prevented the use of diesel trucks.In the 1950s the material shortages had been alleviated so the trolleytrucks were replaced with diesel trucks and the former power lines were taken down.Some trucks from the abandoned line were reconverted to passenger trams and used along streets in Kapfenberg.