A crane moves the first steel tier to be bolted into place on Jan. 6, for welding of a second new structural test stand at NASA’s Marshall Space Flight Center in Huntsville, Alabama – critical to development of NASA’s Space Launch System.

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When completed this summer, the 85-foot-tall Test Stand 4697 will use hydraulic cylinders to subject the liquid oxygen tank and hardware of the massive SLS core stage to the same loads and stresses it will endure during a launch.

Read more at Space Daily.