Minerals
Rare mine wall collapse at Pogo A rare mine wall collapse incident occurred at the underground Pogo Mine in late August, blocking one portal, or entrance. Safety was not jeopardized and mine workers used other portals to exit. Northern Star Resources Ltd., the mine owner and operator, and the federal Mine Safety and Health Administration, are investigating the cause. The company said “seasonal factors” may have played a role, but did not cite surface water or heavy rains in the…