Your search United Mine Workers of America, Petitioner, v. Federal Mine Safety and Health Review Commission, Respondent.united Mine Workers of America, Petitioner, v. Federal Mine Safety and Health Review Commission, Respondent,helen Mining Company and Kentland-elkhorn Coal Corporation,intervenors.ray Marshall, Secretary of Labor, United States Departmentof Labor, Petitioner, v. Federal Mine Safety and Health Review Commission, Respondent,kentland-elkhorn Coal Corporation, Intervenor.ray Marshall, Secretary of Labor, United States Departmentof Labor, Petitioner, v. Federal Mine Safety and Health Review Commission, Respondent,helen Mining Company, Intervenor.ray Marshall, Secretary of Labor, United States Departmentof Labor, Petitioner, v. Federal Mine Safety and Health Review Commission, Respondent,united Mine Workers of America and Allied Chemicalcorporation, Intervenors did not match any document.