00326nas a2200133   4500000000100000008004100001100001500042700001400057700002600071700001100097700001700108245005800125490000900183       2019                            d1 aNuman Khan1 aAhmad Ali1 aMirosław Skibniewski1 aDo Lee1 aChansik Park00aExcavation Safety Modeling Approach Using BIM and VPL0 v2019