• 27B Original Slurry Concrete Retaining Wall Was Used To Prevent Hudson River Water From Seeping Into The Site In Foundation Hall 911 Museum New York.jpg
  • 27C The Last Column Was Chosen To Mark The Completion Of The Recovery Of The World Trade Center In Foundation Hall 911 Museum New York.jpg
  • 27D The Last Column Was Signed By Recovery Workers, First Responders, Volunteers, And Victims Relatives In Foundation Hall 911 Museum New York.jpg
  • 28 During The South Towers Collapse Extreme Stresses Caused This Steel To Fold Over onto Itself In Foundation Hall 911 Museum New York.jpg
  • 29 River Water Line Valve Was Part Of A Pipeline That Carried Water From The Hudson River To An Underground Refrigeration Plant In Foundation Hall 911 Museum New York.jpg
  • 30 Reinforcing Tieback With 21 Steel Cables Enclosed In A Metal Pipe Was Drilled Into The Slurry Wall And Down Into Bedrock In Foundation Hall 911 Museum New York.jpg
  • 31A Box Steel Column Remnant Provided Structural Support For The Twin Towers In The Center Passage 911 Museum New York.jpg
  • 31B The Column Remnants Rose To Form The North Face Of The North Tower In North Tower Excavation 911 Museum New York.jpg
  • 32A Witness At Ground Zero September 12-16 Photo By Stephane Sednaoui In North Tower Excavation 911 Museum New York.jpg
  • 32B Witness At Ground Zero September 12-16 Photo By Stephane Sednaoui In North Tower Excavation 911 Museum New York.jpg
  • 33 FDNY Dream Bike Was Restored For The Members Of Ladder Company 9 And Engine Company 33 Killed On 911 In Tribute Walk 911 Museum New York.jpg
  • 34 The National 911 Flag In Tribute Walk 911 Museum New York.jpg
  • 35 Mural With Silos Photograph by Jonathan C. Hyman, Mural By Rocco Manno In South Tower Gallery 911 Museum New York.jpg
  • 36 The Shield By Red Grooms 2002 Combines Painting And Sculpture In Tribute To The Recovery Workers At Ground Zero In South Tower Gallery 911 Museum New York.jpg
  • 37 Section Of Steel Facade North Tower Floors 93-96 Was Mangled By The Underbelly Of Hijacked Flight 11 In The South Tower Excavation 911 Museum New York.jpg
  • 38 The Column Remnants Of The South Tower In South Tower Excavation 911 Museum New York.jpg

42 / 55

30 Reinforcing Tieback With 21 Steel Cables Enclosed In A Metal Pipe Was Drilled Into The Slurry Wall And Down Into Bedrock In Foundation Hall 911 Museum New York

30 Reinforcing Tieback With 21 Steel Cables Enclosed In A Metal Pipe Was Drilled Into The Slurry Wall And Down Into Bedrock In Foundation Hall 911 Museum New York