
    No. 73-1231.
    No. 73-1234.
    Linden Lumber Division, Summer & Co. v. National Labor Relations Board et al.; and National Labor Relations Board v. Truck Drivers Union Local No. 413 et al.
   C. A. D. C. Cir. Motion of the Chamber of Commerce of the United States for leave to file a brief as amicus curiae and certiorari granted. Cases consolidated and a total of one hour allotted for oral argument;  