▁to ▁hide ▁the ▁evidence ▁of ▁mass ▁murder . ▁The ▁site ▁was ▁plant ed ▁with ▁small ▁f irs ▁and ▁wild ▁l up ines ▁and ▁all ▁camp ▁structures ▁were ▁dis m ant led . ▁ ▁The ▁last ▁train ▁with ▁ 3 0 0 ▁Jewish ▁Son der k omm ando ▁prisoners ▁who ▁performed ▁the ▁clean - up ▁operation ▁depart ed ▁to ▁Sob ib or ▁ex termin ation ▁camp ▁for ▁g ass ing ▁in ▁late ▁June ▁ 1 9 4 3 . ▁They ▁were ▁told ▁that ▁they ▁were ▁being ▁ev acu ated ▁to ▁Germany ▁instead . ▁Any ▁equipment ▁that ▁could ▁be ▁re used ▁was ▁taken ▁by ▁the ▁German ▁and ▁Ukrain ian ▁personnel ▁to ▁the ▁concentration ▁camp ▁Maj dan ek . ▁W irth ' s ▁house ▁and ▁the ▁neighbour ing ▁SS ▁building , ▁which ▁had ▁been ▁the ▁property ▁of ▁the ▁Polish ▁Railway ▁before ▁the ▁war , ▁were ▁not ▁demol ished . ▁After ▁loc als ▁started ▁dig ging ▁for ▁valu ables ▁in ▁Be ł ż ec , ▁the ▁Germ ans ▁installed ▁a ▁permanent ▁guard ▁so ▁that ▁their ▁mass ▁kill ings ▁would ▁not ▁come ▁to ▁light . World ▁Without ▁Civil ization : ▁Mass ▁Mur der ▁and ▁the ▁Hol oca ust , ▁History ▁and ▁Analysis , ▁Volume ▁ 1 , ▁Robert ▁Mel vin ▁Spect or , ▁University ▁Press ▁of ▁America , ▁page ▁ 4 3 5 ▁SS ▁personnel ▁with ▁work ▁command os ▁turned ▁the ▁camp ▁into ▁a ▁fake ▁farm ▁with ▁one ▁Ukrain ian ▁SS ▁guard ▁assigned ▁to ▁sett le ▁there ▁perman ently ▁with ▁his ▁family . ▁This ▁model ▁for ▁guard ing