Rib pillar

#	Item
21	MSHA - Preliminary Report of Accident - Coal Fatal Fall of Face, Rib, Pillar or Highwall Accident[removed] - #19 Add to Reading List Source URL: www.msha.gov Language: English - Date: 2014-07-24 09:55:56 Mine Safety and Health Administration Longwall mining Sago Mine disaster Wilberg Mine Mining Underground mining Coal mining
22	stance. ¾¾The depth of cover was 700 feet or greater in 77 percent of the fatalities. ¾¾The mining height exceeded 7 feet in every instance but one. ¾¾Other conditions that have contributed to rib fall fatalities i Add to Reading List Source URL: www.msha.gov Language: English - Date: 2014-07-18 14:46:33 Mine Safety and Health Administration Safety engineering Longwall mining Room and pillar Underground mining Mining Coal mining
23	stance. ¾¾The depth of cover was 700 feet or greater in 77 percent of the fatalities. ¾¾The mining height exceeded 7 feet in every instance but one. ¾¾Other conditions that have contributed to rib fall fatalities i Add to Reading List Source URL: www.msha.gov Language: English - Date: 2014-07-18 14:46:33 Mine Safety and Health Administration Safety engineering Longwall mining Room and pillar Underground mining Mining Coal mining