Segment Shell
This consisted of a thin cast iron case shaped to leave a central hole for the bursting charge. Segments of cast iron weakened internally by grooves to assist fragmentation were inserted from the rear of the shell which was closed by a cast iron disc. During the application of the lead sheathing the molten lead was permitted to flow between the segments thus binding them together, while at the same time securing the base disc to the body of the shell. Thus the shell was made strong against external pressure but opened readily when the bursting charge was exploded. Mainly used as an anti-personnel weapon, it was fuzed with either a time or 'concussion' (later termed 'percussion') fuze. Segment was superceded by common shell and shrapnel.