Alder Shaft Flooded excavated shaft with Montage and Portland Storage Co in background Opera Shaft Conveyor positioning over river Opera Shaft Diver looking out of decompression chamber Opera Shaft The cutterhead of "Rosie" the TBM gets christened with the project team Opera Shaft Close up overview with front shield and workers East Side CSO tunnel View of northbound tunnel with inspector Steel Bridge Shaft site Microtunnel Boring Machine (MTBM) under assembly Opera Shaft Tunnel Boring Machine (TBM) front shield underside showing push rams and hydraulic lines Opera Shaft West side of TBM front and tail shield & Bowflex seal before start of tunneling Opera Shaft Clam exiting shaft Opera Shaft Workers examing hydromill teeth Outfall 40 Microtunnel Boring Machine (MTBM) suspended over shaft Outfall 46 breakthrough Group shot of workers when MTBM broke through at Outfall 46 Outfall 28 (SE 18th and Insley) Opera Shaft Groundbreaking Opera Shaft overview Alder Shaft Slurry separation plant workers Tunnel Segments Rosie the TBM comes to the surface Cutterhead Removal The TBM Cutterhead is removed from the McLoughlin Shaft Tunneling Complete Rosie the TBM Inside McLoughlin Shaft prior to cutterhead removal East Side CSO Tunnel Complete Looking Northbound