- He ik ki ▁(" H o pping ▁Henry "). ▁ ▁The ▁French ▁M le ▁ 1 9 3 9 ▁mine ▁was ▁inspired ▁by ▁the ▁success ▁of ▁the ▁S - mine . ▁In ▁ 1 9 4 0 , ▁Major ▁Paul ▁Del al ande ▁of ▁the ▁French ▁Corps ▁of ▁Engine ers ▁managed ▁to ▁escape ▁the ▁German ▁con quest ▁of ▁his ▁country ▁and ▁reached ▁the ▁United ▁States ▁with ▁the ▁M le - 1 9 3 9 ▁plans . ▁These ▁plans ▁led ▁to ▁the ▁development ▁of ▁the ▁American ▁M 2 ▁mine , ▁which ▁was ▁field ed ▁in ▁ 1 9 4 2 ▁but ▁proved ▁def ic ient ▁in ▁combat . ▁The ▁American ▁army ▁was ▁im pressed ▁by ▁the ▁S - mine ' s ▁role ▁in ▁th wart ing ▁the ▁French ▁off ensive ▁in ▁the ▁German ▁S aar ▁region ▁at ▁the ▁beginning ▁of ▁World ▁War ▁II ▁and ▁continued ▁further ▁work ▁on ▁bound ing ▁mines . ▁After ▁the ▁war , ▁the ▁American ▁army ▁developed ▁their ▁M 1 6 ▁mine ▁directly ▁from ▁captured ▁S - mine ▁designs . ▁ ▁The ▁Soviet ▁Union ▁also ▁based ▁the ▁design ▁of ▁its ▁O Z M ▁series ▁of ▁mines ▁on ▁the ▁German ▁S - mine . ▁Soviet ▁mines ▁t ended ▁to ▁be ▁far ▁simpler ▁internally ; ▁instead ▁of ▁being ▁filled ▁with ▁steel ▁balls ▁or ▁sc rap ▁metal , ▁the ▁O Z M - 4 ▁mine ▁was ▁given ▁a ▁solid ▁cast - ir on ▁body ▁that ▁would ▁fragment ▁on ▁its ▁own . ▁Later , ▁the ▁O Z M - 7 2 ▁bound ing ▁mine