30-Ton shipment of explosive chemical disappears between California and Wyoming

A 30-ton shipment of ammonium nitrate, a chemical used as both fertilizer and as a component in explosives, has gone missing during a rail shipment between Wyoming and California last month, resulting in four separate investigations. A railcar loaded with some 60,000 pounds of the chemical left Cheyenne, Wyoming on April 12, only to be found empty two weeks later at a rail stop in the Mojave Desert, according to a short incident report from the firm which shipped the ammonium, KQED reports.