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 · Ninth Circuit Court of Appeals · 1983 | Caselegis