Rondout pressure tunnel. View looking up incline to platform from whic...
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Rondout pressure tunnel. Steel arch forms mounted on traveler with pla...
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Rondout pressure tunnel. Section of steel interlining in place to rei...
Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description
Borings. Testing porosity of rock on site of Rondout pressure tunnel. ...
Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description
Rondout pressure tunnel. Placing concrete in excavated mud seam in the...
Picryl description: Public domain image of a basement, underground, lobby, free to use, no copyright restrictions.
Rondout pressure tunnel. Section of tunnel with finished concrete lin...
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Rondout pressure tunnel. ... Contract 12. October 6, 1910.
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Rondout pressure tunnel. ... Contract 12. April 20, 1911.
Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description
Rondout pressure tunnel. Showing method of placing concrete in arch. ...
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Rondout pressure tunnel. View of foot of shaft showning 90-degree junc...
Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description
Camps. Rondout pressure tunnel. ... Contract 12. July 20, 1909.
Public domain photo of a monument, historic place, free to use, no copyright restrictions image - Picryl description
Rondout pressure tunnel. Tunnel excavation showing operation on both ...
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Rondout pressure tunnel. View of concrete ring in place at top of shaf...
Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description
Rondout pressure tunnel. Completed excavation with temporary roof timb...
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Rondout pressure tunnel. ... Contract 12. September 11, 1916.
Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description
Rondout pressure tunnel. View showing completed excavation and roof ti...
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Rondout pressure tunnel. View of head-frame and cage with muck car at ...
Public domain photo of a monument, historic place, free to use, no copyright restrictions image - Picryl description
Rondout pressure tunnel. Head-frame, hoisting engine and bucket at to...
Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description
Rondout pressure tunnel. Construction of Downtake chamber at junction...
Picryl description: Public domain image of a bridge, railroad structure, train viaduct, free to use, no copyright restrictions.
Camps. Rondout pressure tunnel. ... Contract 12. July 21, 1910.
Public domain image of a romantic ruins landscape, classical architecture, free to use, no copyright restrictions - Picryl description
Rondout pressure tunnel. View of drainage drift with completed concret...
Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description
Rondout pressure tunnel. Columns set up with drills ready to operate ...
Picryl description: Public domain image of a basement, underground, lobby, free to use, no copyright restrictions.
Rondout pressure tunnel. Concrete chamber walls at top of Drainage sh...
Public domain image of watercolor painting from British-related collections, free to use, no copyright restrictions - Picryl description
Rondout pressure tunnel. Compressors at power-house. Contract 12. Nov...
Picryl description: Public domain image of a construction site, works, 20th-century industrial architecture, free to use, no copyright restrictions.