
    No. 75-978.
    E. I. du Pont de Nemours & Co. et al. v. Train, Administrator, Environmental Protection Agency, et al.
   C. A. 4th Cir. [Certiorari granted, 425 U. S. 933.J Motion of American Iron and Steel Institute for leave to participate in oral argument as amicus curiae denied. Mr. Justice Powell took no part in the consideration or decision of this motion.  