This paper describes the spatial distribution of fragments on static detonation of a thin-walled steel cylinder internally loaded with explosives. The fragments on striking a mild steel `witness-plate' produce a fragmentation pattern and a simple analysis of its geometry indicates the direction of emission of the fragments. Experimental results indicate that the direction of emission of most of the fragments make an angle of 7.5° to the normal to the inner surface of the cylinder and away from the exploder.