Thursday, March 28, 2024
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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)

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Trego railroad tunnel major construction feat
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.