No. 71-2386. September 5, 1972. Roger C. Hartley, Atty. (argued), Elliot Moore, Atty., Marcel Mallet-Prevost, Asst. Gen. Counsel, Peter G. Nash, Gen. Counsel, N.L.R.B., Washington, D.C.; Roy O. Hoffman, Director, Region 20 N.L.R.B., San Francisco, Cal., for petitioner. Robert V. Magor (argued), of Severson, Werson, Berke Melchior, San Francisco, Cal., for respondent. Before HUFSTEDLER, LUMBARD and CHOY, Circuit Judges. The Honorable J. Edward Lambard, Senior Circuit Judge for the Second Circuit,