National Labor Relations Board v. Local No. 12, International Union of Operating Engineers, Afl-Cio, and Operating Engineers Health and Welfare Fund, Operating Engineers Pension Trust, Operating Engineers Vacation-Holiday Savings Trust, Operating Engineers Training Trust, Southern California Operating Engineers Benefits Administration, Inc., and Leo J. Majich, Maas & Feduska, Inc. v. National Labor Relations Board, and Local No. 12, International Union of Operating Engineers, Afl-Cio, Intervenor, and Operating Engineers Health and Welfare Fund, Operating Engineers Pension Trust, Operating Engineers Vacation-Holiday Savings Trust, Operating Engineers Training Trust, Southern California Operating Engineers Benefits Administration, Inc., and Leo J. Majich, Intervenors And

673 F.2d 1094 110 L.R.R.M. (BNA) 2374 , 94 Lab.Cas. P 13,487 , 3 Employee Benefits Ca 1541 NATIONAL LABOR RELATIONS BOARD, Petitioner, v. LOCAL NO. 12, INTERNATIONAL UNION OF OPERATING ENGINEERS, AFL-CIO, Respondent, and Operating Engineers Health and Welfare Fund, Operating Engineers Pension Trust, Operating Engineers Vacation-Holiday Savings Trust, Operating Engineers Training Trust, Southern California Operating Engineers Benefits Administration, Inc., and Leo J. Majich, Respondents. MAAS & FEDUSKA, INC., Petitioner, v. NATIONAL LABOR RELATIONS BOARD, Respondent, and Local No. 12, International Union of Operating Engineers, AFL-CIO, Intervenor, and Operating Engineers Health and Welfare Fund, Operating Engineers Pension Trust, Operating Engineers Vacation-Holiday Savings Trust, Operating Engineers Training Trust, Southern California Operating Engineers Benefits Administration, Inc., and Leo J. Majich, Intervenors and Cross-Petitioners. Nos. 80-7467, 79-7650, 80-7216 and 80-7104. United States Court of Appeals, Ninth Circuit. Argued and Submitted April 9, 1981. Decided April 8, 1982. John H. Ferguson, Washington, D. C., argued, for N. L. R. B.; Elliott Moore, John H.…