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				The heap of rocks is 20 to 30 meters (65 to 100 feet) long and 
				seven to eight meters (22 to 26 feet) high. The workers were 
				trapped Tuesday after two rockfalls at the Red Chris mine in 
				northern British Columbia.
 Mine company Newmont Corp. said that the workers have enough 
				air, food and water for an extended stay, although their 
				communications were cut off after the second cave-in.
 
 The company's statement said that specialized drones have been 
				sent in to assess the geotechnical conditions underground at the 
				mine. Teams are restoring the specialized communication system 
				to try to reestablish communication with the workers, the 
				statement said.
 
 “The workers are understood to be sheltering in a MineARC refuge 
				chamber designed to support 16 people. Additional refuge 
				chambers are also available nearby and accessible if required,” 
				according to the statement, referring to the safe haven where 
				the workers are staying.
 
 Production at the mine has been paused while the rescue effort 
				continues.
 
 The mine is mostly open pit, but Newmont said in an earlier 
				statement that development of underground block-cave mining 
				began in 2019, four years after the mine’s first production 
				date.
 
 The company said that the three trapped workers are 
				business-partner employees, two from British Columbia and one 
				from Ontario. They were working more than 500 meters (more than 
				a quarter-mile) past the affected zone when the first rocks 
				fell, and were asked to relocate to the refuge before the second 
				rockfall.
 
 “Following the first event, contact was established with the 
				individuals and confirmation was received that they had safely 
				relocated to one of multiple self-contained refuge bays,” the 
				company’s statement said.
 
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