March 7 – On this day in Montana
History in 1962 the Billings Gazette reported that a series of explosions
linked two separate drill holes together creating 850 feet of diversion tunnel
and 1,235 feet of spillway tunnel to make one tunnel that included an 80-degree
turn for the Yellowtail Dam project in eastern Montana. “Engineering was so
accurate you could not see where the blast which linked the two holes
occurred,” the paper reported. “It was quite an engineering feat.”
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