The completed north portal of the Flathead Tunnel near Trego. The fans for the tunnel's ventilation system can be seen on the left. (Mansfield Library, University of Montana)
January 14, 2022
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January 16, 2022 midnight
Trego railroad tunnel major construction feat
At 11:10 a.m. on the morning of June 21, 1968 one final blast connected to the two holes being drilled beneath the Salish Mountains.