It comprised esmark , a us investment group , together with companhia vale do rio doce , a brazilian mining company , and the industrial union of donbass corporation , a ukrainian steel producer .

该财团由美国投资集团esmark、巴西矿业公司淡水河谷（cvrd）和乌克兰钢铁生产商顿巴斯工业联盟（industrialunionofdonbass）组成。