posted on Jul, 5 2007 @ 01:19 PM
The construction site mention is a giveaway as to the type of Nookular device going missing.
These devices are in use day in, day out on most construction sites. They are used for determining moisture content and material density. The ones I
used to service / calibrate contained two radioactive sources - Cesium 137 and americium 241 (if I remember correctly, it's been many years). These
radioactive sources were extremely small and contained in hardened sealed capsules, embedded in the base of the units. In order to make a dastardly
"dirty bomb" you'd firts have to extract the material from the hardened capsules - not an easy task, I've seen bulldozers run these things over
and they remain sealed - then add to an explosive device. The explosive would then scatter the material over such a wide area you'd be more likely
to soak up more radiation from a series of dental Xrays.
Still, makes for good headlines to scare the bejeezus out of folks.
Given the high cost of these devices it's more likley they've been stolen but are still being used on construction sites, sold to overseas
construction companies or are propping up an overpass somewhere and the person who signed it out is claiming it was stolen