No. 91-70120. Argued and Submitted June 4, 1992. Decided August 11, 1992. Peter Winkler, N.L.R.B., Washington, D.C., for petitioner. Helene M. Antel, Gen. Counsel, IBEW Local Union 1547, Anchorage, Alaska, for respondent. Petition for Enforcement of an order of the National Labor Relations Board. Before: FARRIS, NORRIS and KOZINSKI, Circuit Judges. PER CURIAM. The Board petitions for enforcement of its order finding Local 1547 in violation of section 8(b)(1)(B) of the NLRA, 29 U.S.C. § 158(b)(1)(B)