It was found by the IRA, in response to using low-brisance AN fertilizers, that "hot spots" can be created by blending powdered sugar into the ANFO
mixture, effectively sensitizing the mixture to mining-standard prilled ammonium nitrate effectiveness in which the interaction of the detonation
front with a spherical void concentrates energy. Blasting-grade AN prills are typically between 0.9 and 3.0 mm in diameter. |