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Miners walk in line as they enter the El Comal mine to help in the rescue operations at the gold and silver mine after a landslide trapped at least 24 miners inside, in Bonanza, Nicaragua, Friday, Aug. 29, 2014. Rescuers on Friday located 20 of at least 24 gold miners trapped by a landslide in northern Nicaragua, but were not immediately able to bring them to safety. (AP Photo/Esteban Felix) ( Nicaragua Miners Trapped )

A miner rests after taking part in the rescue operation of the miners trapped at El Comal gold and silver mine after a landslide trapped at least 24 miners inside, in Bonanza, Nicaragua, Friday, Aug. 29, 2014. Rescuers on Friday located 20 of at least 24 gold miners trapped by a landslide in northern Nicaragua, but were not immediately able to bring them to safety. (AP Photo/Esteban Felix) ( Nicaragua Miners )

A miner walks inside the El Comal mine during rescue operations at the gold and silver mine after a landslide trapped at least 24 miners inside, in Bonanza, Nicaragua, Friday, Aug. 29, 2014. Rescuers on Friday located 20 of at least 24 gold miners trapped by a landslide in northern Nicaragua, but were not immediately able to bring them to safety. (AP Photo/Esteban Felix) ( Nicaragua Miners Trapped )

Miners carry a coffin as they prepare for the worse possible scenario, at El Comal gold and silver mine after a landslide trapped at least 24 miners inside, in Bonanza, Nicaragua, Friday, Aug. 29, 2014. Rescuers on Friday located 20 of at least 24 gold miners trapped by a landslide in northern Nicaragua, but were not immediately able to bring them to safety. (AP Photo/Esteban Felix) ( Nicaragua Miners )

Miners help rescuers in their attempt to reach a group of fellow miners trapped in a gold mine in the community of El Comal, near Bonanza in northeastern Nicaragua, on August 29, 2014. At least 20 miners are trapped alive deep underground after an informal gold mine collapsed in northeastern Nicaragua, presidential spokeswoman Rosario Murillo said Friday. "We have identified 20 comrades who are alive," Murillo said, adding there were 28 miners working in the shaft 800 meters (2,600 feet) underground when the cave-in happened Thursday. Two miners have managed to dig their way out. Inti Ocon/AFP/Getty Images ( 532844284 )

A miner takes a break from the rescue operations at El Comal gold and silver mine after a landslide trapped at least 24 miners inside, in Bonanza, Nicaragua, Friday, Aug. 29, 2014. Rescuers on Friday located 20 of at least 24 gold miners trapped by a landslide in northern Nicaragua, but were not immediately able to bring them to safety. (AP Photo/Esteban Felix) ( Nicaragua Miners )

Relatives, friends and fellow miners wait as rescuers try to reach a group of miners trapped in a gold mine in the community of El Comal, near Bonanza in northeastern Nicaragua, on August 29, 2014. At least 20 miners are trapped alive deep underground after an informal gold mine collapsed in northeastern Nicaragua, presidential spokeswoman Rosario Murillo said Friday. "We have identified 20 comrades who are alive," Murillo said, adding there were 28 miners working in the shaft 800 meters (2,600 feet) underground when the cave-in happened Thursday. Two miners have managed to dig their way out. Inti Ocon/AFP/Getty Images ( 532844181 )

Miners wait for their turn to help in the rescue operations at El Comal gold and silver mine after a landslide trapped at least 24 miners inside, in Bonanza, Nicaragua, Friday, Aug. 29, 2014. Rescuers on Friday located 20 of at least 24 gold miners trapped by a landslide in northern Nicaragua, but were not immediately able to bring them to safety. (AP Photo/Esteban Felix) ( APTOPIX Nicaragua Miners Trapped )

Margarita Mendez, hugs her son while she cries and waits for news of her other son Salvador Urbina, one of the miners trapped at El Comal gold and silver mine after a landslide trapped at least 24 miners inside, in Bonanza, Nicaragua, Friday, Aug. 29, 2014. Rescuers on Friday located 20 of at least 24 gold miners trapped by a landslide in northern Nicaragua, but were not immediately able to bring them to safety. (AP Photo/Esteban Felix) ( Nicaragua Miners Trapped )

Miners enter the El Comal gold and silver mine to help with rescue operations after a landslide trapped at least 24 miners inside, in Bonanza, Nicaragua, Friday, Aug. 29, 2014. Rescuers on Friday located 20 of at least 24 gold miners trapped by a landslide in northern Nicaragua, but were not immediately able to bring them to safety. (AP Photo/Esteban Felix) ( Nicaragua Miners )