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Photographer Unknown (5148) Neighborhood Loop (Chicago, Ill.) (5147) Columbus Drive (Chicag... (544) Randolph Street (Chica... (298) Monroe Street (Chicago... (153) Michigan Avenue (Chica... (144) Show more... Subject.TGM Skyscrapers (1839) Hoisting Machinery (1484) Construction Workers (1476) Trees (1349) Scaffolding (976) Show more...

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	Title:	Subject.TGM:	Description:

321.	Cloud Gate, SBC Plaza, February 17, 2004	Concrete; Bolts & nuts;	Close-up view of an anchor bolt that was sunk into SBC Plaza in preparation for the installation of the sculpture.

322.	Cloud Gate, SBC Plaza, February 17, 2004	Concrete; Bolts & nuts;	Close-up view of an anchor bolt that was sunk into SBC Plaza in preparation for the installation of the sculpture.

323.	Cloud Gate, SBC Plaza, February 17, 2004	Concrete; Bolts & nuts; Marks (Symbols);	Close-up view of anchor bolts that were sunk into SBC Plaza to support the sculpture.

324.	Cloud Gate, SBC Plaza, ca. March 3, 2004	Concrete; I-beams; Scaffolding; Trucks; Hoisting machinery; Pails; Structural systems; Construction equipment;	Close-up view of an I-beam encased in green rebar. Rebar, or reinforcing bar, is put in place before the concrete is poured. The resulting reinforced concrete is stronger and more durable than regular...

325.	Cloud Gate, SBC Plaza, ca. March 3, 2004	Concrete; I-beams; Scaffolding; Structural systems; Marks (Symbols);	Poly-foam cubes alongside the base of the sculpture.

326.	Cloud Gate, SBC Plaza, ca. March 3, 2004	Concrete; I-beams; Bolts & nuts;	Close-up view of an I-beam that forms part of the structural support below the sculpture.

327.	Cloud Gate, SBC Plaza, ca. March 3, 2004	Concrete; I-beams; Scaffolding; Hoisting machinery; Structural systems;	Close-up view of an I-beam wrapped in green rebar. Rebar, or reinforcing bar, is put in place before the concrete is poured. The resulting reinforced concrete is stronger and more durable than regular...

328.	Cloud Gate, SBC Plaza, ca. March 3, 2004	Concrete; I-beams; Scaffolding; Structural systems; Trusses;	Close-up view of an I-beam wrapped in green rebar. Rebar, or reinforcing bar, is put in place before the concrete is poured. The resulting reinforced concrete is stronger and more durable than regular...

329.	Cloud Gate, SBC Plaza, ca. March 3, 2004	Concrete; I-beams; Structural systems; Bolts & nuts;	Close-up view of the base of the sculpture.

330.	Cloud Gate, SBC Plaza, ca. March 3, 2004	Structural systems; Trusses; I-beams; Hoisting machinery; Scaffolding;	Looking southeast toward the partially built sculpture. The surface of SBC Plaza was later raised to cover I-beams visible here beneath the base of the sculpture.

331.	Cloud Gate, SBC Plaza, ca. March 3, 2004	Concrete; I-beams; Bolts & nuts; Marks (Symbols);	Close-up view of an I-beam below the base of the sculpture.

332.	Cloud Gate, SBC Plaza, ca. March 3, 2004	Concrete; I-beams; Structural systems; Trusses; Scaffolding; Skyscrapers; Marks (Symbols);	Looking northwest toward I-beams below the base of the sculpture. The sculpture is located on a load-bearing wall which separates two rooftops of different heights.

333.	Cloud Gate, SBC Plaza, March 4, 2004	Concrete; I-beams; Construction workers; Bolts & nuts; Nails & spikes;	Close-up view of an I-beam and rebar below the base of the sculpture.

334.	Cloud Gate, base plate, March 4, 2004	Concrete; I-beams; Bolts & nuts; Nails & spikes;	Close-up view of the base plate for the sculpture's anchoring system before it was encased in concrete.

335.	Cloud Gate, base plate, March 4, 2004	Concrete; I-beams; Bolts & nuts; Pails;	Close-up view of the base plate for the sculpture's anchoring system before it was encased in concrete.

336.	Cloud Gate, base plate, March 4, 2004	Concrete; I-beams; Pails; Bolts & nuts;	View of the base plate for the sculpture's anchoring system before it was encased in concrete.

337.	Cloud Gate, base plate, March 4, 2004	Concrete; I-beams; Pails; Bolts & nuts; Nails & spikes;	View of the base plate for the sculpture's anchoring system before it was encased in concrete.

338.	Cloud Gate, SBC Plaza, March 4, 2004	Concrete; Construction equipment;	A large bag of grout at SBC Plaza.

339.	Cloud Gate, SBC Plaza, March 4, 2004	Pails; Construction equipment;	A bucket of watery grout at SBC Plaza.

340.	Cloud Gate, base plate, March 4, 2004	I-beams; Bolts & nuts; Concrete;	Close-up view of the base plate for the sculpture's anchoring system before it was encased in concrete.