School for Union Sabotage Bared As 8 Garment Men Plead Guilty; Members of Needle Local Tell of Classes in Acid-Throwing, Factory Wrecking and Strike Beatings--7 Others Held
8 United Machinists of Needle Industries Local 150 members plead guilty to sabotage charge; tell of classes in acid-throwing, factory-wrecking and strike beatings, N Y C; 7 others help