C. A. 10th Cir. [Certiorari granted, 497 U. S. 1002.] Motion of Occupational Safety and Health Review Commission for leave to file a brief as amicus curiae granted.
C. A. 10th Cir. [Certiorari granted, 497 U. S. 1002.] Motion of Occupational Safety and Health Review Commission for leave to file a brief as amicus curiae granted.