292 F.3d 849 NATIONAL MINING ASSOCIATION, et al., Appellants,v.DEPARTMENT OF LABOR, et al., Appellees. No. 01-5278. United States Court of Appeals, District of Columbia Circuit. Argued April 9, 2002. Decided June 14, 2002. COPYRIGHT MATERIAL OMITTED COPYRIGHT MATERIAL OMITTED COPYRIGHT MATERIAL OMITTED Appeal from the United States District Court for the District of Columbia (No. […]