Direktorat Jenderal Pengairan,73 Consulting Engineers,53 Gorenment Of the Republic Of Indonesia,49 Designing And Consulting Engineers,41 PT Indra Karya,19 Japan International Cooperation Agency,13 Nippon Koei Co, Ltd,12 Brantas River Basin Development,10 Brantas Project,8 Perusahaan Umum Listrik Negara,7 Proyek Gunung Kelud,6 Departemen Pekerjaan Umum,4 Sakai Iron Works Co, Ltd.,3 Tokyo Shibura Electric Co., Ltd.,3 Meidensha Electric Mfg. C., Ltd.,2 Perusahaan Umum Listrik Negara2 Proyek Gunung Berapi,2 Project Gunung Berapi,2 Ministry Of Public Works,1 Maruzen Company,1