New temporary seating area behind white wall opens in late May. Photo: John Stamets

Structural moment frame is ready for installation in NW corner of 2nd floor. Photo: John Stamets

New moment frame will be hoisted into place with 'tugger' chains in ceiling Photo: John Stamets

Protective plastic is for dust control at base of tower on 3rd floor. Photo: John Stamets

Rig on 3rd floor to hoist steel moment frame from floor below. Photo: John Stamets

Steel moment is installed at west wall of 2nd floor Photo: John Stamets

Dust control as historic steel is exposed on 5th floor of tower. Photo: John Stamets

Interior brick demolition at 4th floor of tower. Photo: John Stamets

Red lead paint (orange) is partially abated at column F21 on 3rd floor. Photo: John Stamets

Installing replica of historic lamp Photo: John Stamets

Some of the red lead paint was removed with the "Peel Away" technique. Photo: John Stamets

Looking east on Level 1: Wall for temporary waiting room is under construction at left. Photo: John Stamets

4th floor walls are tagged in prep for upcoming seismic retrofit. Photo: John Stamets

4th floor walls are tagged in prep for upcoming seismic retrofit. Photo: John Stamets

On left is first leg of an exterior “ring beam” for tower structural stability. Photo: John Stamets

Windows are infilled with plywood as historic frames are restored offsite. Photo: John Stamets