Emergency teams in Ecuador are still searching for two men trapped in a gold mine since late Friday.
Some 20 miners were at the scene Tuesday assisting in the search effort for their colleagues.
The two miners were with two other workers in the mine late Friday when a cave-in occurred, trapping the men about 150 meters below the surface.
The bodies of two miners were recovered Saturday. While there has been no contact with the two remaining workers, officials are holding out hope they have survived.
The mine is near the town of Portovelo, about 400 kilometers southwest of the capital, Quito.
A government mining official, Jorge Espinosa, said he believes water levels in the mine contributed to the collapse.
Relatives of the trapped miners have been gathering at the site, waiting for any news on the rescue effort.
The accident follows international attention on mining after last week's dramatic rescue of all 33 miners in Chile who were trapped underground for more than two months.
Some information for this report was provided by AP, AFP and Reuters.