Management Office (IEAR), Tanjung Redeb
Jalan H.M. Isa III No. 136
Tanjung Redeb, Kabupaten Berau, 77311
East Kalimantan, Indonesia
Phone/Fax:  +62554 2707109
Management Office (IEAS), Samarinda
Jalan Cipto Mangunkusumo Kav. 13
Pertokoan Rapak Indah No. B5
Samarinda Seberang, 75126
East Kalimantan, Indonesia
Phone/Fax:  +62541 262263
Operations Office, NCI Project, Palaran
Jalan Trikora No. 34 RT. 07
Kelurahan Rawa Makmur, Kecamatan Palaran, 75243
Samarinda, East Kalimantan, Indonesia
Phone:  +62541 681834
Operations Office, BBE (l3) and NRC (L2) Projects, Tenggarong
Desa BangunRejo Blok B RT. 14
Kecamatan Tenggarong Seberang, Kabupaten Kutai Kartanegara, 75262
East Kalimantan, Indonesia
Phone:  +62541 7020298