In a corridor on the south side of the Great Hall, stone masons set the first floor stone in the CVC.

Progress of floor stone installation two days later.

With the help of a small forklift, a CVC worker maneuvers a 6,000-pound steel beam through the door threshold of the South Orientation Theater.

A worker uses a blowtorch to seal the tar layers of waterproofing material on the monumental steps located on the south side of the CVC entrance zone.

A stone mason trims a piece of sandstone at the north end of the Visitor Center Exhibition Gallery.

Sunlight peeks into the Great Hall through a gap between a temporary cover over one of two 30'x70' skylights.

Working within the Carriageway below the East Front center steps, a worker sets a concrete masonry block unit around a portion of the original East Front structure.

Workers review mechanical drawings in the south Orientation Theater.

A stone mason secures an anchor to a stairwell block wall at the west end of the Great Hall.

Stone masons set a granite block to the north exterior wall of the Congressional Auditorium.

A worker lays electrical and communications conduit in the floor of the North Orientation Theater.

Workers in the House expansion space position a segment of air duct into place in the ceiling of a new committee hearing room.

Workers lower a bundle of steel rebar inside the utility tunnel below East Capitol Street at the intersection with First Street.

A worker welds together a utility line connection in the East Capitol Street utility tunnel.

A stone mason sets a block of western Pennsylvania sandstone to a wall inside the Exhibition Gallery.

Aerial photo of the CVC project site as it appeared November 2, 2005.

A stone mason trims a sandstone block to be set on a stairwell wall on the west side of the Great Hall.

Stone masons set a cap stone atop a retaining wall in the north quadrant of the CVC site.

Scaffolding rises throughout the Congressional Auditorium to provide a platform that will allow crews to work on the ceiling.

Stone masons position a piece of marble into place in the south Orientation Theater.

Stone masons raise a block of sandstone into place along one of the columns inside the Congressional Auditorium.

A stone mason sets stone to a column inside the Great Hall.

CVC workers assemble scaffolding around one of the 16 columns inside the Great Hall.

Pipes are in place inside much of the pre-cast concrete sections of the CVC utility tunnel below East Capitol St.

Workers secure a large fan unit to the floor of the CVC Service level.

Stone masons lay granite paving stones near the Senate Steps.

A worker in the CVC utility tunnel welds together two 40-foot-long steel water pipes.

A mason checks the alignment of sandstone on a column inside the Congressional Auditorium.