Mushroom Cloud "No Threat"

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A huge non-nuclear explosion expected to generate a mushroom cloud in the Nevada desert will meet state air quality regulations, officials said Wednesday.
State regulators have raised questions about pollution and
hazardous materials from the planned June 2 detonation of 700 tons
of an ammonium nitrate and fuel oil mixture.
But the Nevada Test Site has a blasting permit -- and state
officials say they have no plan to try to block the Defense Threat
Reduction Agency experiment dubbed "Divine Strake."
The National Nuclear Security Administration intends within the
next two weeks to provide proof to the state Department of
Conservation and Natural Resources that the massive blast 90 miles
northwest of Las Vegas won't violate a June 2004 air quality
Federal officials say detonating the 700-ton bomb will help
design a weapon to penetrate hardened and deeply buried targets.