Asarco, Inc. v. Occupational Safety and Health Administration, United States Dept. Of Labor, United Steelworkers of America, Afl-Cio, and Chemical Manufacturers Assoc., Intervenors. Anaconda Minerals Company, and Kennecott Copper Corporation v. Occupational Safety and Health Administration, United States Department of Labor, United Steelworkers of America, Afl-Cio, and Chemical Manufacturers Assoc., Intervenors · Ninth Circuit Court of Appeals · 1984 | Caselegis