Archive Record

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Catalog Number 2008.009.237
Object Name Drawing, Technical
Scope & Content "(Partial) Robbins Pattern drilled to elev.10,240 to be shot 18 Aug 1966. H L; 22,680 cy."
Horizontal directional drilling pattern used in blasting for creation of the Jack P. Elliott Dam, Homestake Project.

"As you know, a coyote hole is a tunnel driven into a hillside for the purpose of blasting a lot of rock. The tunnel is as small as can be conveniently worked, about 5 by 7 feet, and ends in a chamber that can be any size considered necessary. The chamber is packed full of explosives, the tunnel partly filled in order to confine the blast and the whole thing is set off, resulting in a huge hunk of the mountain being converted into broken rock. I saw a map that Buster had and I believe there was about 7 coyote holes used at the Homestake dam, all on the right hand side looking upstream, just above the camp ground that used to be there." --T. R. "Ted" Beck
Catalog type Archive
Dates of Creation August 1966
Title Partial Robbins Pattern
Collection Angela Beck Collection, EVLD
Search Terms Homestake Water Project (Colo.)
Holy Cross Wilderness Area
Tennessee Pass, Colorado
John P. "Jack" Elliott Dam (Colo.)
Subjects Dam construction
Dams
Water projects
Drilling
Explosives
Lexicon category 8: Communication Artifact
Lexicon sub-category Documentary Artifact