What is ammonium nitrate?
Ammonium Nitrate (AN) is an industrial oxidiser commonly used in the manufacture of explosives. In prilled form, it is designed to absorb fuel oil efficiently, making it a key component in bulk blasting systems used across mining, quarrying and construction applications.

How is ammonium nitrate different from ANFO?
Ammonium Nitrate is a raw material, while ANFO is a finished explosive product. ANFO is created by blending prilled ammonium nitrate with fuel oil. The ammonium nitrate provides oxygen for the reaction, while the fuel oil provides energy. Together, they form a cost‑effective explosive suited to dry blasting conditions.

Ammonium nitrate can be supplied separately to approval customers, typically for use in the manufacture of ANFO, blended bulk emulsions, slurries or other products. 

ANFO is sold as a ready-to-use product, blended under quality-controlled conditions to deliver consistent, reliable performance in dry blasting environments. 

Why is ammonium nitrate so important to ANFO performance?
The quality and consistency of Ammonium Nitrate directly influence ANFO performance. Low‑density, industrial‑grade prills are engineered to optimise fuel oil absorption, ensuring predictable energy release, reliable detonation and consistent blast outcomes in dry surface and underground environments.

Does Orica manufacture ammonium nitrate?
Yes. Orica manufactures Ammonium Nitrate at dedicated facilities around the world to support the reliable supply of explosives and blasting systems. Orica’s manufacturing processes are designed to meet strict quality, safety and regulatory requirements while supporting customers’ operational needs.