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Safety Factors in Construction and Ventilation, Wawona Vehicular Tunnel, Yosemite National Park, California

The Flathead Tunnel: A Geologic, Operations, and Ground Support Study, Burlington Northern Railroad, Salish Mountains, Montana

Published Year

• 1940-1949 (1)
• 1970-1979 (1)

Subject

• Tunneling. (2) *
• Tunnels -- Ventilation. (1)
• Tunnels. (1)

Author

• Ash, S. H. (1)
• Skinner, Eugene H. (1)

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