Abstract: A two component field mix explosive composition comprising a first solid component comprising ammonium nitrate or mixtures of ammonium nitrate with ammonium perchlorate, and a second liquid component comprising as a first ingredient hydrazine, a second ingredient which is water, alcohol or a mixture thereof, and as a third ingredient ammonium nitrate in an amount no greater than about one-sixth of the total weight of the second component. At the site of use the liquid component is poured into the solid component to form an explosive composition. This composition is detonable in elongate packages as small as one inch in diameter, by use of a blasting cap.