In April 2003 , two weeks after the assassination of the Serbian PM Zoran Đinđić , the bankrupted company was sold to American steel company U.S. Steel ( USS ) for $ 23 million . U.S. Steel also pledged to invest $ 150 million in plant modernization . Following the company 's acquisition , the owners changed its name from SARTID a.d. to '' U.S. Steel Serbia '' d.o.o. ( USS Serbia d.o.o. ) . Over the years , while being owned by U.S. Steel Corporation , the company formed an important part of the Serbian GDP , and also was the biggest Serbian exporter during the period from 2003 to 2012
assassination
Assassination of Zoran Đinđić
Hesteel Serbia