Abstract: An electric delay detonator 10 has a base charge 14, an ignition charge 16 and a fuse element 26 formed from a strip of zirconium. The zirconium strip 26 is forked at both ends having forks 36 which define an ignition portion and forks 34 which define a fuse portion. The forks 34 and 36 have a body portion 38 between them. The fuse portion is adjacent the ignition charge. The fuse element 26 is mounted in a carrier 24 by means of the forked portions 34 and 36. In one embodiment the forked portions 36 are attached to firing wires 28. In another embodiment the detonator has three forks 44.1, 44.2 and 44.3 at its ignition portion, two of the forks being connected to firing wires and the third fork being connected to a control wire. In a further embodiment one firing wire is connected to one end of the fuse element and the other firing wire to the other end.