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"The oil rigs currently operating in Iranian waters mostly work for Iranian state-owned companies. The rigs are owned by a variety of foreign firms, including Norway's Sinvest, London-based Foresight Group, China Oilfield Service, Japan Drilling and Saipem, a subsidiary of Italian oil giant ENI. Industry sources said they would probably be certified by either Lloyd's or Bureau Veritas. BV did not respond to inquiries." (The Washington Post, "Congress sees shipping-certification firms as tool to tighten Iran noose," 12/5/2011)