No. 90-4264. April 15, 1991. Howard E. Perlstein, Paul Hitterman, Aileen Armstrong, Deputy Assoc. Gen. Counsel, N.L.R.B., Washington, D.C., for petitioner. Larry W. Wilshire, Richard W. Wiseman, Brown, Herman, Scott, Dean Miles, Ft. Worth, Tex., for respondent. James Walker, Ft. Worth, Tex., for Walker Const. Co. Application for Enforcement of an Order of the National Labor Relations Board. Before CLARK, Chief Judge, RONEY, and DUHE, Circuit Judges. Circuit Judge of the Eleventh Circuit, sitting