Rotary Windmill used to run water pumps, ~150,000 in U.S., provided means of pumping water.
{"Image DocumentName": "Rotary Windmillused to run water pumps, ~150,000 in U.S., provided means of pumping water.", "Image ImageDescription": "thousands of 2 \u2013 3 kW units were installed in 30\u2019s and 40\u2019s REA and TVA phased out as they encouraged electrification.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}