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penstock
Officials ride in one of the penstock pipes of the soon-to-be-completed Hoover Dam; 1935 [1600×1227]
30 Mayıs 2026
![Officials ride in one of the penstock pipes of the soon-to-be-completed Hoover Dam; 1935 [1600×1227]](https://wp.rifat.org/wp-content/uploads/2026/05/r8900enx1lzg1.jpeg)
