BHP Billiton
Union Fenosa (Spain)
Fire Service (Australia)
Ambulance Service (Spain)
CELPE, CHESF, Light (Brazil)
Belize Telemedia Ltd
Sri Lanka Telecom (Sri Lanka)
Ergon Energy (Australia)
Ambulance Service (Australia)
ENE (Angola)
Saudi Electric Compnay (Saudi Arabia)
Energie AG (Austria)
Government of Slovenia
Dubai Petroleum (UAE)
Nucleo (Paraguay)
Eskom (RSA)
Rio Tinto
OPT
Santos (Australia)
EDM (Mozambique)
Petroecuador (Ecuador)
SP Ausnet (Australia)
Lihir Gold (PNG)
SEPOC
OPT (New Caledonia)
TOT (Thailand)
Telecom Fiji
Police Service
Snowy Hydro (Australia)
Vodacom DRC (Democratic Republic of the Congo)