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- Ross, Dennis (December 23, 2011). "On Iran, Pressure Works". The Wall Street Journal. Retrieved January 2, 2012. "... be able to spot the telltale signs of the repiping of centrifuges that would provide several months of warning that Iran was enriching to weapons grade. ..."
- "DOT marks 30 years of deepwater innovation". PennEnergy - Energy News (press release). December 6, 2011. Retrieved January 2, 2012. "The problem was solved by installing a short-term bypass of the flowline separator, active management of the gas riser hydraulics, and repiping the ..."