National Geographic : 1944 Aug
©S.A.B.E.P.A. From an Ugly Scar on Belgium's Smiling Face Comes Cement to Build Roads,Seawalls, Fortifications Cement from this combination quarry-factory at Harmignies, southeast of Mons, may have helped build the Nazis' vaunted Atlantic Wall. British and German troops first clashed in 1914 at Mons, near the French border. The city was retaken by the Allies on Armistice Day, 1918. This isthe chief coal-mining region ofBelgium.