![](https://nthumb.tpgimages.com/mid2_com_img/28103/24056/TOP22308215.jpg)
Rows of mammoth springs, coiled from three-inch diameter steel, support the 11 buildings of NORAD's (North American Air Defense Command) mountain complex. More than 900 springs, weighing a ton each, cushion the buildings, people and delicate electronic equipment they operate against jarring nuclear blasts or earthquakes.
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Details
Creative#:
TOP22308215
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
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No
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No
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No
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