An explosive composition, fluid when formulated and gelling to a paste at a predetermined time is provided. The composition, which is particularly useful for blasting rocks and can be readily poured or pumped into drillholes, comprises an oxidant, a combustible, a gelling agent, water and a gelling promoter.

A stained explosive composition in a water-gelatin base is made from oxidizing salts and at least one water-insoluble hydrocarbon which has dissolved therein a water-insoluble coloring material.