January 28, 2006 - Posted at 2:30 p.m. CST
NEVADA TEST SITE, Nev. (AP) _ Scientists are perfecting
equipment in Nevada that aims to detect nuclear devices and ``dirty
The government test site is about 75 miles north of Las Vegas.
It's surrounded by barren mountains, spiky yucca trees and craters
left from decades of nuclear weapons tests.
Technicians are testing roadside sensors like those deployed to
ports of entry and some highway weigh stations. They're also
testing sensors in vehicles, including white ambulance-style vans,
black S-U-V's and a Jeep loaded with sophisticated radiation
sniffers and computers.
The goal is to see whether the 30 or so devices available
commercially can distinguish a bomb from less harmful sources of
radioactivity, or household items like kitty litter that contain
natural trace amounts.