cave-in


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cave-in

[′kāv‚in]
(engineering)
References in periodicals archive ?
Proper training alerts workers to some signs of an imminent cave-in.
except when excavations are made entirely in stable rock or excavations are less than 5 feet in depth and examination of the ground by a competent person provides no indication of a potential cave-in,'' the report said.
Miners who have been trapped underground in past cave-ins say a social hierarchy already is being formed.
Failure to provide cave-in protection exposed employees to imminent and potentially fatal crushing and suffocation hazards.
The cave-in on the east-northeastern slope is about 15 meters long, 10 meters wide and 20 to 30 centimeters deep, the agency said.
The company received the citations for failing to protect workers from cave-ins during trenching operations noted in four separate inspections conducted in 2010 under the OSHA Trenching and Excavation Special Emphasis Program.
The machine will advance at 20 metres a day in an operation that will be hindered by the risk of cave-ins.
Engineers are transporting a more powerful drill from another mine and must decide where to bore the larger hole without risking further cave-ins at the unstable mine.
Collins said firefighters had to battle several minor cave-ins including one that covered Garcia above his head for 25 minutes.
Minister James Purnell said: "After weeks of U-turns and cave-ins from David Cameron he is having to shore up his position by pandering to his backbenchers.
Even with the emphasis on safety education and training, and the seriousness of the risks of allowing personnel to enter unprotected excavations, 88 percent of the fatalities investigated by OSHA in 2004 were still not using protective systems, a relatively simple and effective means of preventing cave-in accidents.
Excavations made in stable rock formations, or conditions in which examination by a "competent person" determines that no cave-in can be expected.