No. 28522. December 3, 1970. Granville M. Alley, Jr., Tampa, Fla., William R. Radford, Miami, Fla., for petitioners. Bernard Kleiman, Gen. Counsel, Pittsburgh, Pa., Bredhoff, Gottesman Cohen, Washington D.C., Cooper, Mitch Crawford, George C. Longshore, Birmingham, Ala., for intervenor United Steelworkers of America, AFL-CIO. Marcel Mallet-Prevost, Asst. Gen. Counsel, Abigail C. Baskin, Atty., N.L.R.B., Washington, D.C., Harold A. Boire, Director, Region 12, N.L.R.B., Tampa, Fla., for respondent