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Eye Witness No. 331951 11 min
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Eye Witness No. 461952 11 min
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Eye Witness No. 351951 11 min
This film shows a complicated three-year engineering project leading to the destruction of Ripple Rock, a deathtrap in the shipping lane between Vancouver Island and the mainland. Also shown are tunnelling beneath the ocean floor of Seymour Narrows, the placing of the explosives and a close-up view of the successful explosion in 1958.