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Dartmouth Humanitarian Engineering (DHE) - Kevin Francfort '15 tries out the water-pump seesaw at ProSynergy's Huancaho Yachaywasi. | Facebook
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Yanko Design - OasiSaw is an innovative water pump system that utilizes human play to extract ground water. The iconic seesaw design harnesses energy created during play to not only pump, but
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A Seesaw for All Seasons: a DIY Water-Powered Seesaw With a Sliding Penguin : 8 Steps (with Pictures) - Instructables
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See-saw Pump, stainless steel | Order No. 5.18700| Richter Spielgeräte GmbH
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Indian teachers design ingenious seesaw hand-pump for schoolkids to pump water safely - Buy, Sell or Upload Video Content with Newsflare
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Richter Spielgerate See-Saw Pump for water play | Timberplay | ESI External Works
