Workers during construction of Mangahao hydro-electric scheme (circa 1922) by Leslie Adkin. https://www.rawpixel.com/image/13027694/photo-image-leslie-adkin-workers-photographFree Image from public domain licenseMangahao Hydro-Electric scheme (1922-1923) by Leslie Adkin. https://www.rawpixel.com/image/13029428/mangahao-hydro-electric-scheme-1922-1923-leslie-adkinFree Image from public domain licenseMangahao Hydro-Electric scheme : 1923-1924 (1923-1924) by Leslie Adkin. https://www.rawpixel.com/image/13029576/mangahao-hydro-electric-scheme-1923-1924-1923-1924-leslie-adkinFree Image from public domain licenseMangahao Hydro-Electric scheme : 36th and 37th visits - 1924 (1924) by Leslie Adkin. https://www.rawpixel.com/image/13029412/image-person-water-mountainFree Image from public domain licenseHydropower explained Instagram post template https://www.rawpixel.com/image/14909140/hydropower-explained-instagram-post-templateView licenseMangahao Hydro-Electric scheme : 36th and 37th visits - 1924 (1924) by Leslie Adkin. https://www.rawpixel.com/image/13029403/image-person-pattern-waterFree Image from public domain licenseSustainable energy solutions blog banner template https://www.rawpixel.com/image/14878236/sustainable-energy-solutions-blog-banner-templateView licenseWater energy Instagram post template https://www.rawpixel.com/image/14856757/water-energy-instagram-post-templateView licenseWater energy Facebook post template https://www.rawpixel.com/image/14856135/water-energy-facebook-post-templateView licenseMangahao Hydro-Electric Scheme - 41st and 42nd visits : 1924-1925 (1924-1925) by Leslie Adkin. https://www.rawpixel.com/image/13028860/image-person-clothing-manFree Image from public domain licenseMangahao Hydro-Electric Scheme : 31st, 32nd , 33rd and 34th visits (1924) by Leslie Adkin. https://www.rawpixel.com/image/13029793/image-person-sky-waterFree Image from public domain licenseBill Walker and wife Emma in surge chamber no 1, Mangahao Hydro-electric power station (20 May 1923) by Leslie Adkin. https://www.rawpixel.com/image/13028855/image-person-technology-circleFree Image from public domain licenseTwo of four 338-foot-high intake towers that stand in the deep waters of Lake Mead behind massive Hoover Dam, which… https://www.rawpixel.com/image/582342/carol-highsmiths-arizona-photographFree Image from public domain licenseMangahao Hydro-Electric scheme : 1929 (1929) by Leslie Adkin. https://www.rawpixel.com/image/13028618/mangahao-hydro-electric-scheme-1929-1929-leslie-adkinFree Image from public domain licensePanorama of Waitaki hydro-electric dam & Powerhouse (24 March 1959-13 April1959) by Leslie Adkin. https://www.rawpixel.com/image/13030554/image-cloud-people-skyFree Image from public domain licenseMangahao Hydro-Electric scheme : 1924 (1924) by Leslie Adkin. https://www.rawpixel.com/image/13029215/mangahao-hydro-electric-scheme-1924-1924-leslie-adkinFree Image from public domain licenseMangahao Hydro-Electric scheme - 37th and 38th visits : 1924 (1924) by Leslie Adkin. https://www.rawpixel.com/image/13028668/image-person-water-clothingFree Image from public domain licenseMangahao Hydro-Electric scheme - 39th and 40th visits : 1924-1925 (1924-1925) by Leslie Adkin. https://www.rawpixel.com/image/13029254/image-dog-person-waterFree Image from public domain license