From 1974: Two miners died in a terrifying “rock burst” 4,000 feet deep in the Galena Mine near Wallace, Idaho. About 90 men were at work when the rock became unstable from pressure deep in the mine ...

Rock bursts, commonly associated with coal mining activities, involve the abrupt release of elastic energy from rock masses. Recognized as a major challenge in mining engineering and rock mechanics ...

Says seven miners to recover from injuries Says needs more information on what triggered the burst Dec 16 (Reuters) - Hecla Mining Co said a rock burst at its Lucky Friday mine in Idaho was unrelated ...