http://www.usatoday.com/news/nation/2005-11-11-explosivedetectors_x.htm
"The devices are being tested to determine whether they will be put into regular use. One of the devices being tested, the Smiths Sabre 4000, can detect evidence both of traditional explosives like TNT and of homemade fertilizer bombs, according to the company's website. The department paid between $25,000 and $50,000 for each detector,"
