*912C. A. 4th Cir. [Certiorari granted, 479 U. S. 1029.] Motions of Chamber of Commerce of the United States, UNR Industries, Inc., Defense Research Institute, Inc., and Product Liability Advisory Council, Inc., et al. for leave to file briefs as amici curiae granted.
Justice Powell took no part in the consideration or decision of these motions.
