5923098 A US Army major inspecting some of the Teller mines found by the American engineers, Leghorn, Italy, 1944 (b/w photo) by Unknown photographer, (20th century); National Army Museum, London; (add.info.: A US Army major inspecting some of the Teller mines found by the American engineers, Leghorn (Livorno), Italy, 1944. Photograph, World War Two, Italy, 1944. The Teller was the German Army?s standard anti-tank mine during World War Two (1939-1945). It contained 11lb of High Explosive and was detonated when a protruding pin was forced into the mine due to the pressure of a tank passing over it. Some models of the mine were also designed to magnetically attach to an enemy vehicle and detonated with a time-based ignitor.); by National Army Museum ; out of copyright.