C. A. D. C. Cir. Motions of American Mining Congress and Cedar Coal Co. et al. for leave to file briefs as amici curiae granted. Certiorari de*928nied.
C. A. D. C. Cir. Motions of American Mining Congress and Cedar Coal Co. et al. for leave to file briefs as amici curiae granted. Certiorari de*928nied.