international-union-united-mine-workers-of-america-v-federal-mine-safety , 931 F.2d 908 ( 1991 )
energy-west-mining-company-v-federal-mine-safety-and-health-review , 40 F.3d 457 ( 1994 )
Udall v. Tallman , 85 S. Ct. 792 ( 1965 )