Eisenhower memorial tunnel. Edwin C. Johnson bore. Accidents More intensive safety training needed says miner following accident. Post S 28, 1976 g.20 8 injured in tunnel blast, drill hits explosives. Post S 28, 1976 p.1 Post S 29, 1976 p.1 State safety officials cite contractors for alleged violations in blast that injured eight. worker fatally injured. ost 8, 1974 g.4 %-v1N 0 10, 1976 p.8
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