plumbers-and-steamfitters-local-342-united-association-of-journeymen-and , 598 F.2d 216 ( 1979 )
building-material-construction-teamsters-union-local-no-216 , 520 F.2d 172 ( 1975 )
Sheet Metal Workers International Association, Local Union No. 223 v. National Labor Relations Board , 498 F.2d 687 ( 1974 )