US DEPARTMENT OF ENERGY / SCIENCE PHOTO LIBRARY US DEPARTMENT OF ENERGY / SCIENCE PHOTO LIBRARY
Workers maintaining insulators in the switchyard of a hydroelectric power supply station for the Southwestern Power Administration (SWPA), USA. The SWPA markets power from hydroelectric projects in Arkansas, Missouri, Oklahoma and Texas. US Army Corps of Engineers, together generating 1,917 MW capacity. Power from the project is marketed directly to wholesale users such as industry and public service buildings.
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