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- Ueno DamUeno Dam (上野ダム) is a concrete gravity dam in the Gunma Prefecture of Japan. The dam serves
- Uinta BasinThe Uinta Basin (also known as the Uintah Basin) is a physiographic section of the larger
- Ultrashort pulse laserAn ultrashort pulse laser is a laser that emits ultrashort pulses of light, generally of t
- Underground power lineElectrical power via underground cables
- Underground storage tankAn underground storage tank (UST) is, according to United States federal regulations, a st
- Uninterruptible power supplyElectrical device that uses batteries to prevent any interruption of power flow
- United Mine Workers of AmericaNorth American labor union
- United States District Court for the Eastern District of TennesseeThe United States District Court for the Eastern District of Tennessee (in case citations,
- United States withdrawal from the Iran nuclear deal2018 US withdrawal from the Iran nuclear deal
- Upstream (petroleum industry)Sector of the oil and gas industry
- Urengoy gas fieldWorld's second largest natural gas field
- Utility frequencyFrequency used on standard electricity grid in a given area
- Utility polePost used by public utilities to support overhead wires and related equipment