Rail company investigates disappearance of 30 tons of explosive ammonium nitrate during shipment

pounds of ammonium nitrate disappeared from a rail shipment between Wyoming and California.
The rail car was sealed, but the chemical was missing when it arrived at its destination.
Four government agencies are investigating how the chemical vanished during the journey.
Although volatile, authorities do not believe the ammonium nitrate poses a public threat at this time.
The rail company says the chemical may have fallen from the rail car, though the seals were intact upon delivery.