
    No. 81-1891.
    Morrison-Knudsen Construction Co. et al. v. Director, Office of Workers’ Compensation Programs, United States Department of Labor, et al.
   C. A. D. C. Cir. [Certiorari granted, ante, p. 820.] Motions of Shipbuilders Council of America, Alliance of American Insurers et al., National Association of Stevedores, National Council of Self-Insurers, and American Insurance Association for leave to file briefs as amici curiae granted.  