The present work determined the effect of the addition of aluminium powder and ground ammonium nitrate(V) on selected detonation parameters of ANFO explosives. The detonation velocity and the characteristics of the air blast wave were determined. It has been shown that replacing part of the prilled ammonium nitrate(V) with its ground form results in an increase in the detonation velocity and the blast wave parameters. On the other hand, it was found that the addition of aluminium powder to a certain level increases the measured parameters, but after reaching maximum values, they then decrease.