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3. Drilling
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Tamping in dynamite prior to blasting a section at Gilman. Holes that have been prepared are shown with electrical connections to the blasting caps and the dynamite. Joe Fear prepared the blasting caps on the surface. Bottom series of holes were detonated first to keep the miners from having to work so much loose debris - a true demonstration of the principle of gravity.
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"Homestake Dam. The material from the last Coyote-hole blast is about cleaned up. The shovels are working on the far end of the blast zone. The lower quarry bench and ramp is now covered with water. The upper two benches have been dug out by working from 2 headings on each level and now are used as the haul roads for the far end. Aug. 1966."
Format:
Image
Tamping in dynamite prior to blasting a section at Gilman. Holes that have been prepared are shown with electrical connections to the blasting caps and the dynamite. Joe Fear prepared the blasting caps on the surface. Bottom series of holes were detonated first to keep the miners from having to work so much loose debris - a true demonstration of the principle of gravity.