The National Geographic Magazine, Volume 115National Geographic Society, 1959 - Geography Indexes kept up to date with supplements. |
From inside the book
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Page 14
... Rock , Father Albert 503 Rock , Volcanic : Madeira ( is- land ) 378 , 387 Rock crystal , Cylinder of : Cenote Xlacah 125 , 129 Rock Harbor , Isle Royale , Mich . 451 Rocket - launching area see Canaveral , Cape Rockets : " Reaching for ...
... Rock , Father Albert 503 Rock , Volcanic : Madeira ( is- land ) 378 , 387 Rock crystal , Cylinder of : Cenote Xlacah 125 , 129 Rock Harbor , Isle Royale , Mich . 451 Rocket - launching area see Canaveral , Cape Rockets : " Reaching for ...
Page 25
... Rock ' n Roll's front axle , preventing the vehicle's front end from falling vertically into the crevasse when the two other Sno - Cats , side by side , attempted to pull it out backwards . One of Rock ' n Roll's pontoons failed to ...
... Rock ' n Roll's front axle , preventing the vehicle's front end from falling vertically into the crevasse when the two other Sno - Cats , side by side , attempted to pull it out backwards . One of Rock ' n Roll's pontoons failed to ...
Page 309
... rock so hard a foreman said of it : " This stuff takes the teeth off a power shovel every 18 hours . Ten feet of it will blunt a drill bit . " At the upper lock there were 3,000,000 tons of such rock to remove . Dynamite would do it ...
... rock so hard a foreman said of it : " This stuff takes the teeth off a power shovel every 18 hours . Ten feet of it will blunt a drill bit . " At the upper lock there were 3,000,000 tons of such rock to remove . Dynamite would do it ...
Contents
A TROPICAL BIT OF FRANCE 255 | vi |
FIRST CROSSINGS OF THE ENDS OF THE EARTH | 1 |
THE ARCTIC AS A SEA ROUTE OF THE FUTURE | 21 |
Copyright | |
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