Technical World Magazine, Volume 12Technical World Company, 1909 |
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Page 313
... tunnel and for eleven minutes the landscape is lost to view . This Opset tunnel is three miles in length , but from beginning to end the temperature is cool and equable . This is due to the excellent system of ventilation that has been ...
... tunnel and for eleven minutes the landscape is lost to view . This Opset tunnel is three miles in length , but from beginning to end the temperature is cool and equable . This is due to the excellent system of ventilation that has been ...
Page 399
... tunnel , the opening of which with the construction of the Great Northern westward , was one of the most remarkable feats of western railway engineering . The traffic capacity of this tunnel represents the capacity of the Great Northern ...
... tunnel , the opening of which with the construction of the Great Northern westward , was one of the most remarkable feats of western railway engineering . The traffic capacity of this tunnel represents the capacity of the Great Northern ...
Page 439
... tunnels was started , rivalry sprang up in the hearts of the different gangs of tunnel drivers , and American records went glimmering . Some time ago three gangs of tunnel men , working in the south heading of the same tunnel , drove a ...
... tunnels was started , rivalry sprang up in the hearts of the different gangs of tunnel drivers , and American records went glimmering . Some time ago three gangs of tunnel men , working in the south heading of the same tunnel , drove a ...
Contents
MAGAZINE | 586 |
Cover Design LEJAREN HILLER | 591 |
Men of SciencePORTRAITS | 605 |
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