Extensive research undertaken by Shell's Fuel and Lubricants Engineers indicated that waste oils could be successfully blended with ammonium nitrate fuel oil
(ANFO) blend, which is commonly used in blasting.
Pangusban said authorities recovered a cellular phone-triggered ammonium nitrate fuel oil
(ANFO) pipe bomb, rigged with several one-inch concrete and common nails as shrapnel.
The case was over the seizure of explosive devices, including ammonium nitrate fuel oil
, HMX high-melting explosive and pentaerythritoletranitate stored in yellow bags underneath a wooden stool supposedly at Valdez' rented house.