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September 1970: Dynamiting into the permafrost

September 21, 1970

Volunteers Tom Busch and John Pfeifer and dynamite expert Sam Tucker put in another day, melting holes into the permafrost with red-hot chisels and heavy hammers. Sam’s dynamite blasts excavate an average of about a foot a day on the main hole for the tower, as well as the three smaller holes for guy wire anchors.