Kaltschmidt also conspired to destroy the Port Huron tunnel. For this enterprise he contrived a car which he proposed to load with dynamite set to explode with a time fuse. Fritz Neef, the Stuttgart graduate and expert mechanical engineer, was his able assistant and adviser in this project. The car was of standard railway gauge. It was to be set on the Grand Trunk tracks at the mouth of the Port Huron end of the tunnel and released, to roll down into the darkness under the river. At the low point in the tunnel's curve the charge would explode, bursting the walls of the tube, and completely interrupting the heavy international freight traffic at that point. The "devil car" never was released. Kaltschmidt was arrested, and finally, in December, 1917, tried and convicted on three counts. He was given the maximum sentence, of four years' imprisonment and $20,000 fine. His sister, Mrs. Neef, who had been an active intermediary, was sentenced to three years' imprisonment and was fined $15,000; Carl Schmidt and his wife were each condemned to two years in prison, and assessed a fine of $10,000 each, and only old Franz Respa, the father of the dynamiter, was acquitted. The activities of this group received tangible approval from the German Embassy. Even before von Papen drew the check on March 27 for Kaltschmidt, the attaché's secretary, von Igel, had transferred $2,000 to the Detroit German from the banking firm of Knauth, Nachod and Kuhne (January 23). On October 5, long after the Walkerville explosion, but while the Port Huron venture was still a possibility, the Chase National Bank of New York transferred to Knauth, Nachod and Kuhne $25,000 from the joint account maintained there by Count von Bernstorff and Dr. Albert, and next day the money was placed to Kaltschmidt's credit. The Port Huron tunnel was the object of German attentions from the active San Francisco consulate. Crowley, who had been von Brincken's messenger in the Van Koolbergen affair, and one Louis J. Smith, were hired by Herr Bopp to go east on a destroying mission. They ran out of money in New York, and called at the New York consulate for assistance. They were told that the New York consulate had nothing to do with Pacific coast activities, so they wired von Schack for funds. He replied, chiding them for not having called on von Papen. Late in June Smith left New York and joined Crowley at the Normandy Hotel in Detroit. "Then we went to Port Huron," he said, "where we planned to dynamite a railroad tunnel and a horse train. We didn't do it, though. "Then we went to Toronto, and Crowley told me to plant a bomb under a horse train in the West Toronto yards. But I saw a policeman, and I got out quick. Then we took some nitroglycerine, cotton, sawdust, and a tin pan and some other things to Grosse Isle, Ontario, and went out back of a cemetery and made some bombs.