Clockwise:

1. Assembly and installation of the ATLAS Hadronic endcap Liquid Argon Calorimeter. The ATLAS detector contains a series of ever-larger concentric cylinders around the central interaction point where the LHC’s proton beams collide.

2. Lowering of the last element (YE-1) of the CMS detector into its underground experimental cavern.

3. Transporting the ATLAS Magnet Toroid End-Cap A between building 180 to ATLAS point 1.

More at Boston.com’s The Big Picture.

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