In 2016, eight miners were killed in a cave-in
at the Rudna mine in Polkowice and methane explosions killed five miners at the Myslowice-Wesola mine in 2014.
Most such accidental deaths and injuries are blamed on unprofessional digging, use of substandard equipment, explosions inside coalmines, cave-in
that trapped 33 miners deep underground in a small gold and copper mine in the far north of Chile.
COPIAPO Chile, August 23, 2010 (TAP) - Rescue workers on Monday reinforced a small drill hole to serve as an umbilical cord to 33 miners found alive 17 days after a cave-in
in Chile's far north and say it will take months to dig them out.
The workers were trapped at a depth of 540 metres when the powerful explosion, triggered by a build-up of methane gas, caused a massive cave-in
The greatest hazard and the most feared is a cave-in
. As noted in a Morbidity and Mortality Weekly Report (MMWR), the Bureau of Labor Statistics documented that 75 percent (or 411) of the 542 excavation-and-trenching fatalities studied in the United States from 1991 to 2001 were the result of a cave-in
Also, they must be braced against each other to prevent lateral movement in the event of a cave-in
. Similarly, the shield width should match the trench width, also to minimize the risk of cave-in
(041) 411 Struck by object (02) 35 Pedestrian struck by vehicle/equipment (43) 19 Caught in or compressed by equipment/objects (03) 14 All other events 63 Total 542 Event (OIICS * code) (%) Excavation/trenching cave-in
(041) (75.8) Struck by object (02) (6.5) Pedestrian struck by vehicle/equipment (43) (3.5) Caught in or compressed by equipment/objects (03) (2.6) All other events (11.6) Total (100.0) Source: Census of Fatal Occupational Injuries (excludes New York City).
The pillars are stripped during the retreat portion of the process, resulting in what Zipf calls a "controlled cave-in
." The long wall approach begins by developing two parallel gate roads approximately 750 feet apart.
Recently in two separate accidents of gas explosion and cave-in
, at least 23 coal miners lost their lives in Balochistan's coalfields.
OSHA announced last week that it plans to levy $84,000 in fines to Accadia Site Contracting Inc., for their "cave-in
hazard" at Lewiston Road work site claiming "willful and serious excavation safety violations."
Also in the northwest, 19 workers lost their lives in a cave-in
set off by an explosion in a mine in December.