Japanese attack gallery and Russian countermine k, October 1904. The dotted line n shows the radius of rupture of a Russian charge l of 123kg. (From Zschokke, Handbuch der militärischen Sprengtechnik (1911).
Japanese attack gallery and Russian countermine k, October 1904. The dotted line n shows the radius of rupture of a Russian charge l of 123kg. (From Zschokke, Handbuch der militärischen Sprengtechnik (1911).