Completed 100-inch telescope foundation pier, Mount Wilson Observatory. Construction of building framework surrounds the pier. The 150-foot telescope tower is visible in the background, to the far left. Image courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, California.
Foundations--Design and Construction Concrete construction Brackets Steel framing (Building) Steel, Structural Towers Hoisting machinery Construction equipment Mount Wilson Observatory Photographic prints. (gmgpc)
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