Joint Council of Teamsters, No. 42 v. National Labor Relations Board, Associated Independent Owner-Operators, Inc., Intervenor. National Labor Relations Board v. Building Material and Dump Truck Drivers, Local 420, Associated Independent Owner-Operators, Inc., Associated General Contractors of California, Inc., California Dump Truck Owners Association, Intervenors. California Dump Truck Owners Association v. National Labor Relations Board, Associated Independent Owner-Operators, Inc., Intervenor

671 F.2d 305 JOINT COUNCIL OF TEAMSTERS, NO. 42, et al., Petitioners, v. NATIONAL LABOR RELATIONS BOARD, Respondent. Associated Independent Owner-Operators, Inc., Intervenor. NATIONAL LABOR RELATIONS BOARD, Petitioner, v. BUILDING MATERIAL AND DUMP TRUCK DRIVERS, LOCAL 420, et al., Respondents. Associated Independent Owner-Operators, Inc., Associated General Contractors of California, Inc., California Dump Truck Owners Association, Intervenors. CALIFORNIA DUMP TRUCK OWNERS ASSOCIATION, Petitioner, v. NATIONAL LABOR RELATIONS BOARD, Respondent. Associated Independent Owner-Operators, Inc., Intervenor. Nos. 80-7455, 80-7456 and 80-7457. United States Court of Appeals, Ninth Circuit. Argued and Submitted Aug. 7, 1981. Decided Dec. 21, 1981. As Amended on Denial of Rehearing and Rehearing En Banc March 2, 1982. George A. Pappy, Pappy, Kaplon & Vogel, Robert Varde Kuenzel, Latham & Watkins, Los Angeles, Cal., for Dump Truck Drivers and Owners and for Joint Council. David S. Fishback, N.L.R.B., Washington, D. C., argued for N.L.R.B.; Elliott Moore, Washington, D. C., on brief. Before ELY and NORRIS, Circuit Judges, and COPPLE, * District Judge. NORRIS, Circuit Judge: 1 We are…