The workers were buried when a tunnel in the property caved in after a night of violent rain and storms Tuesday.
Chile's state-owned copper company Codelco, the owner of El Teniente, had initiated a complex rescue effort soon after the episode.
Gonzalo Nuñez Caroca is seen in a photo provided by his company, which had previously declared him one of its employees who was now confirmed dead after recovery of his body on Saturday Another nine workers were injured in the collapse.
Searches on the ground for the workers trapped underground were hampered by a lack of access and diminishing hope as hours passed.
It operates at altitudes of around 4,800 meters in the arid Andean cordillera and Codelco CEO Rubén Alvarado, based on his understanding of mine collapses, had emphasized that for miners trapped Miocene-style like they were, he said the first 48 hours was key for survival. No other survivors were located, sadly.
National Mourning and Growing Questions
Chile's President Gabriel Boric announced three days of national mourning from Sunday, expressing 'deep sorrow' and promising full support for the families of the victims.
Company chairman Máximo Pacheco told The Associated Press that Codelco's heart was hurt, but nobody had submitted complaints about working conditions before.
During a visit to the area, president Boric was met with emotional scenes as his motorcade was heckled by grief stricken relatives and workers when it left the Codelco offices in Rancagua On Friday, he had tasked Mining Minister Aurora Williams with leading the operation on the ground and said the government was going to do "whatever is humanly possible" to locate the miners.
Edgar Rodrigo Quesada, a former union leader who was still hanging on to hope as the search continued called the shelter 500 feet from where workers were trapped behind a collapse and questioned whether they would have been able to make it to safety. "Hope dies last," he said.
The public prosecutor and Codelco have each launched their own investigations into the incident.The mine's general manager, Andrés Music, stressed in a statement the involvement of any type of explosives and expressed condolences to the families.
El Teniente is one of the world's largest copper mines, and has been vital to Chilean prosperity.
The investigation continues in order to understand how this tragedy happened and what can be done in the future to prevent more incidents, he said.
