National Park Service

Photograph from concrete beam at south central part of White House looking north, showing the six permanent vertical steel columns in this area during renovation.

View at the northeast corner of the White House showing progress in excavation for tunnel.

Photograph taken from Room G-6 (Broadcasting Room) to east wall of building. The permanent steel columns and beams are partially completed to level of the Ground Floor and First Floor above. This photograph was taken during the renovation of the White House.

Northwest view taken south of east basement entrance showing excavation work being done by the Allis Chalmers Cletrac Diesel-powered shovel. This was taken during the renovation of the White House.

View at the northeast corner of the White House showing progress in excavation of area for tunnel. Workmen are using air hammers in taking down concrete walk of old entrance of tunnel from Paint Shop.

View at the northeast corner of the White House during excavation for tunnel.

These joists at the northeast corner of the Red Room were uncovered during the renovation of the White House. The joists were cut into and weakened apparently to provide space for the pipes to the bathroom of Room 20 above.

View of installation of concrete sewer at the base of the underpinning wall at the center of south wall of the White House. A workman, excavating within the 36" sewer, fills the cart which is pulled out and emptied. The hydraulic jacks force the sewer sections into excavation area.

Southwest view from the east basement entrance of White House during renovation. The Allis Chalmers Cletrac Diesel-powered shovel is being used to excavate below the basement floor. The earth is carried outside the opening in the south wall and loaded on trucks by a truck crane.

View from window of Room G-3 looking west, during the renovation of the White House. Permanent steel columns have been installed below Room G-6. The derrick is used to lift steel beams to location desired.