Mine Safety and Health Administration Metal and Nonmetal Mine Safety and Health Report of Investigation: Underground Metal Mine (Silver) Fatal Fall of Roof Accident, April 15, 2011, Lucky Friday Mine, Hecla Limited, Mullan, Shoshone County, Idaho. Mine I.D. No. 10-00088

摘要

On April15, 2011, Larry Marek, miner, age 53, was killed while watering down a muck pile in a stope. A rock fall approximately 90 feet long, 20 feet wide, and 30 feet high struck him. The accident occurred because management did not have policies and procedures that provided for the safe mining of split stopes in a multi-vein deposit. Management failed to design, install, and maintain a support system to control the ground in places where miners worked and traveled. Additionally, management failed to ensure that appropriate supervisors or other designated persons examined or tested the ground conditions where the fall occurred.