Hagley Digital Archives | Browse | Advanced Search | About | FAQ / Help | Purchase Images | Library Home    General Image Collection results 1-7 of 7 item(s)  page 1 of 1 : ( <<  1  >> ) :: previous : next
	Search results for: 7 item(s) for: Mountain        Image: Title: Date: Subject: Description: 1. Blasting at Ripple Rock, Seymour Narrows, British Columbia 1958 Blasting; Explosives; Typed caption on photo: "Water-tight cans of explosives being pushed into the cage at the collar of a 570-foot vertical mine shaft on Maud Island, about 120 miles northwest of Vancouver, B.C. The explosive was used to blow the top off Ripple Rock, a two-headed underwater mountain in Seymour Narrows, a part of the inland waterway to Alaska. The blast was a complete success, providing a safe channel 50 feet deep at low tide. The three-year, $3 million project to remove the peril was carried out by the Canadian Government and the more than 1,400 tons of blasting agents were supplied by the DuPont Company of Canada (1956) Limited. Two previous efforts to remove the twin peaks ended in failure." 2. Blasting at Ripple Rock, Seymour Narrows, British Columbia 1958 Blasting; Explosives; Typed caption: "A freighter approaches from the north through Seymour Narrows between Vancouver Island and Maud Island, some 120 miles north of Vancouver. Here two underwater peaks, known as Ripple Rock, long a peril to navigation, were blasted away on April 5, 1958. In the foreground are the headframe of the shaft, hoisting room and shops on Maud Island. Rock and water were hurled skyward as 1,400 tons of explosives blasted the underwater mountain which had wrecked over 100 vessels and taken scores of lives. Now the narrows are cleared to a depth of 50 feet providing a safe, normal channel." 3. Blasting at Ripple Rock, Seymour Narrows, British Columbia 1958 Blasting; Explosives; Ships Typed caption: "Long a menace to navigation, Ripple Rock used to lie in Seymour Narrows, above, 120 miles northwest of Vancouver, British Columbia. If the peaks of the rock had been visible they would have appeared directly above the freighter's position. On April 5, 1958, the biggest non-nuclear blast ever detonated demolished this navigational hazard that had taken a deadly toll. To place the explosives, mining crews burrowed below the water bed and up into the twin peaks of the submerged mountain. Each peak was riddled with a network of tunnels and honeycombed with 1,400 tons of DuPont's special blasting agent 'Nitramax' 2H. Then after three years of preparation Ripple Rock was torn asunder in one dramatic second, giving ships a safe 50-foot channel." 4. Blasting at Ripple Rock, Seymour Narrows, British Columbia 1958 Blasting; Explosives; Typed caption: "This is inside the tunnel under Seymour Narrows which extended about 2,400 feet from Maud Island to a point under Ripple Rock, a massive underwater mountain. This age-old peril to navigation was destroyed on April 5, 1958, by the greatest non-atomic blast ever fired by man. The large tube on ceiling of tunnel carried air for ventilation. Tracks were for battery-operated locomotive which hauled out broken rock. White streak at top of photo was caused by light on hat of man walking toward open camera lens. Some 1,400 tons of high explosives supplied by DuPont of Canada (1956) Limited were needed to blow the top off Ripple Rock. An usual safety record was achieved in this exceedingly difficult project, in the three-year period there was only one accident, a broken leg." 5. Carter Lake Pressure Tunnel, Ripple Rock, British Columbia 1958-04 Blasting; Explosives; Typed caption on photo: "F.D. Bickel (left) of the DuPont Company and Jack Buchanan, Northern Construction Company superintendent, study the loading chart of a coyote tunnel in the north pinnacle of Ripple Rock. Shortly thereafter, in the greatest non-atomic blast ever fired by man, rock and water were hurled 1,200 feet into the air as 2,750,000 points of blasting agents sheared the tops off the underwater mountain. Scores of lives had been lost and more that 100 vessels wrecked on Ripple Rock's twin peaks in the inland waterway to Alaska. Carefully spaced among the 71,500 cans of explosives were 280 primers. Detonating cords leading to these primers triggered the blast. The unique project was sponsored by the Canadian Government. The 2,750,000 pounds of high explosives were supplied by DuPont of Canada (1956) Limited and the Northern Construction Company built the tunnels and shafts." 6. St. Louis and Iron Mountain Railroad Car 1870 Railroad cars; American Car and Foundry Company 7. United States costume Clothing & dress; Illustration of trapper or mountain man.
	results 1-7 of 7 item(s)  page 1 of 1 : ( <<  1  >> ) :: previous : next © Hagley Museum and Library | Questions, comments, and corrections to research@hagley.org | Site powered by ContentDM