MEXICO CITY, Aug 11 (Reuters) - Mexican army divers were blocked by debris in their first attempt to descend deep into a flooded coal mine in northern Mexico where 10 miners have been trapped for a week, the country's defense minister said on Thursday.
The miners became trapped at a mine in the border state of Coahuila on Aug. 3 when their excavation work caused a tunnel wall to collapse, triggering flooding in parts of the underground mine.
Mexican officials by Thursday had managed to dramatically reduce water depths that initially had topped about 100 . . .
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