Industrialization & Energy Service Co. (TAQA) Head Quarters P.O Box 28589 Riyadh 11447 Tel. +966 1 291 1111 Fax. +966 1 291 8555 Kingdom of Saudi Arabia

Arabian Drilling Co. (ADC) P.O Box 4110 Al-Khobar 31952 Tel. +966 3 887 2020 Fax. +966 3 882 6588 Kingdom of Saudi Arabia Website: www.arabdrill.com

Arabian Geophysical & Surveying Co. (ARGAS) P.O Box 535 Al-Khobar 31952 Tel. +966 3 882 7122/3 Fax. +966 3 882 9060 Kingdom of Saudi Arabia Website: www.argasksa.com

CGG Ardiseis (FZCO) P.O Box 261159 Jebel Ali Free Zone Tel. +971 4 883 9464 Fax. +971 3 883 9465 Dubai - UAE

Jubail Energy Service Co. (JESCO) P.O Box 10997 Jubail Industrial 31961 Tel. +966 3 340 4630 Fax. +966 3 340 4493 Kingdom of Saudi Arabia

TAQA Al-Rushaid For Marine Works. Co. Ltd. P.O Box 31684 Al-Khobar 31952 Tel. +966 3 893 3333 Fax. +966 3 898 3551 Kingdom of Saudi Arabia

Saipem TAQA Al-Rushaid Fabricators Co. Ltd. (STAR) Al-Jazirah Center (Worley Parsons / Petrocon Office) 3rd Floor, Room No. 304 P.O. Box 32388, Al Khobar 31952 Tel. +966 3 881 3850 Fax. +966 3 881 3860 Kingdom of Saudi Arabia

Air Liquide Arabia LLC Petroleum Center P.O Box 31685 Al Khobar 31952 Tel. +966 3 801 0108 Fax. +966 3 801 0103 Kingdom of Saudi Arabia E-mail: sherif.ismail@airliquide.com