of being filled with steel balls or scrap metal, the OZM-4 mine was given a solid cast-iron body that would fragment on its own. Later, the OZM-72 bounding mine was filled with steel rods, returning to the original concept of the S-mine. Both of these mines are still being produced by Russia. Yugoslavia also built a PROM-1 bounding type of anti-personnel mine loosely based on the S-mine. The mine was widely used during the Croatian War of Independence by both sides. The mine was also found in Bosnia, Chile, Eritrea, Iraq, Kosovo, Mozambique and Namibia. Other nations that have produced S-mine-inspired designs include the People's Republic of China, Sweden (called Truppmina 11), and Italy. The use of mines remains a controversial issue to this day. Antipersonnel mines like the S-mine have been the subject of repeated treaties and human-rights objections. Their use is the subject of extensive international debate. References Further reading STEINER: SMi-35 - Japanese website featuring US military images and diagrams of the SMi-35 Weapons of the Italian Campaign – Details the use of the S-mine and other weapons during the Allied liberation of Italy Anti-personnel mines World War II infantry weapons of Germany Land mines of Germany Military equipment introduced in the 1930s