Terror methods used to create riots in labor strikes., Washington, D.C. Sept. 23. Professional strike-breaker, undercover agent and industrial guard, E.J. McDade, appeared before the Senate Committee investigating espionage in labor relations today and told how guards used live steam on striking workers, also of the time when a fence was charged with electricity and other terroristic methods used to place blame on labor leaders to result in increasing the "guard" forces. McDade said he had been in the employ of the Railway Audit and Inspection Co. on several jobs