Cincinnati / Seixas / New York / Pinsburgh / Washington / DC / Hamilton / Prague / State College / /
Company
Fine co. / DAi Coal / Lg / Welder (shop) Auger / Cleanup / DO Shuttle / Ke CO / Petroleum Engineers Inc. / Crusher / Mineral Industries / Mineral Resources / Knight / Regression Analysis Statistics Occupation Underground Coal / Blaster I shooterI / Utility / respirable co. / Roof / /
Country
United States / Czech Republic / /
Facility
Mine Safety / The Pennsylvania State University / Mine Safety and Health Administration / National Institute / mine In / American Institute of Mining / /