(MULLAN, Idaho) -- Seven miners were injured Wednesday evening following a rock burst at a mine in Mullan, Idaho.
The incident occurred around 7:50 p.m. at the Lucky Friday Mine. The mine's owner told ABC News a rock burst -- or a spontaneous fracturing of rock -- 5,900 feet underground was to blame, not a collapse as had previously been speculated. She said the burst was caused by a seismic event and was not related to mining activity.
A representative from the mine said that all of its employees -- 20, according to ABC News affiliate KXLY-TV in Spokane, Wash. -- were out of the mine and have been accounted for. Seven were taken to nearby hospitals, six with non-life threatening injuries. The other injured miner was moved to a larger hospital. That miner's condition is not yet known.
The Lucky Friday Mine has since been closed.
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