What is a Urea Tank? http://www.ehow.com/facts_5643207_urea-tank_.html Urea uses (Wikipedia links) * <https://en.wikipedia.org/wiki/Urea#Agriculture> 4.1 Agriculture * <https://en.wikipedia.org/wiki/Urea#Chemical_industry> 4.2 Chemical industry * <https://en.wikipedia.org/wiki/Urea#Explosive> 4.3 Explosive * <https://en.wikipedia.org/wiki/Urea#Automobile_systems> 4.4 Automobile systems * <https://en.wikipedia.org/wiki/Urea#Other_commercial_uses> 4.5 Other commercial uses * <https://en.wikipedia.org/wiki/Urea#Laboratory_uses> 4.6 Laboratory uses * <https://en.wikipedia.org/wiki/Urea#Medical_use> 4.7 Medical use * <https://en.wikipedia.org/wiki/Urea#Analysis> 4.8 Analysis Most likely: * Urea is a pollution by-product of diesel engines, so if diesel is used at NSA-Utah, these tanks collect that, and the size of the tanks are a clue to how much diesel is used, compared say to the tanks in diesel vehicles. What might a data center be using diesel for? One obvious, to me, is stand-by power supply electric generators, if there is an extended loss of electricity in very bad weather, or other regional disaster. Many computer users are familiar with Universal Power Supply, but they depend on batteries whose life is not designed for more than a few hours without public utility power. * http://www.ehow.com/facts_6809075_urea-used-diesel-engines_.html * Green energy * Instrumentation It is also possible that there is some acronym with the letters UREA. Many years ago, I do not know if still true, some data processing equipment in the mainframe world, used to be cooled by some liquid. All that I have worked with was cooled by air. Hazards MSDS sheet on <http://www.sciencelab.com/xMSDS-Urea-9927317> urea Alister William Macintyre -----Original Message----- From: cryptome-bounce@xxxxxxxxxxxxx [mailto:cryptome-bounce@xxxxxxxxxxxxx] On Behalf Of John Young Sent: Sunday, July 28, 2013 7:41 AM To: cryptography@xxxxxxxxxxxxx; cypherpunks@xxxxxxxxxx; cryptome@xxxxxxxxxxxxx Subject: [cryptome] Urea at NSA Utah Data Center There are two spaces labeled "Urea Tank Room" in the NSA Utah Data Center's Generator Plant shown in construction drawings recently leaked: http://cryptome.org/2013-info/07/nsa-utah-dc/nsa-utah-dc.htm See Generator Plant floor plan drawing 11.2 A101 at bottom and top left, spaces labeled "UT." Urea is used in fuel cells. Are there other uses of urea in generator or data processing equipment?