US vulnerable to EMP attack, page 1
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reply posted on 27-7-2004 @ 02:47 PM by titian
Originally posted by WestPoint23
Yeah but an EMP device that can take out the whole US is still many many years in the future


I think this article indicates otherwise. The article is from the company that sells conductive concrete. Grain of salt here? But here is the paragraph anyway.

URL:
home.earthlink.net...

Excerpt:

High-altitude nuclear detonations, above 40,000 meters, produce beautiful auroral displays, but the effect on communications and power facilities can be quite ugly over an entire continent. A nuclear detonation over centrally located Kansas City or Omaha at a height of 500 km would illuminate the entire United States with an EMP field of 25-50 kV/m, which could cause damage to electrical and electronic systems at any point in the US.

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