53 Wash. 2d 644, 333 P.2d 924, reversed.
Richard P. Donaldson argued the cause for petitioners. With him on the brief was Samuel B. Bassett.
Kenneth A. Cox argued the cause for respondent. With him on the brief were Herbert S. Little and Warren R. Slemmons.
Solicitor General Rankin, Stuart Rothman, Thomas J. McDermott, Dominick L. Manoli and Florian J. Bartosic filed a brief for the National Labor Relations Board, as amicus curiae, in support of petitioners.