SPOKANE — The Lucky Friday Mine operated without a fatality for 25 years, but 2011 is turning out to be unlucky at the mile-deep mine in northern Idaho’s Silver Valley.
Two miners died in separate accidents earlier this year. On Wednesday night, seven miners were injured during a rock burst while working 5,900 feet below the surface. All were safely rescued.
The incident prompted the U.S. Mine Safety and Health Administration to shut down the Lucky Friday while it investigates the cause.
The agency could not say how long the mine would be closed.