| 1. |  | Cloud Gate, fabrication, rolling, April 22, 2003 | Steel; Machinery; Machine shops; Industrial facilities; | A worker positioning a flat steel plate into a roller. A custom made roller, similar to an English roller, was built by PSI to roll the steel plates into their curved shapes. The plates are shaped by moving... |
| 2. |  | BP Bridge, spanning Columbus Drive, November 22, 2003 | Girders; Scaffolding; Streets; Hoisting machinery; Construction workers; Skyscrapers; | View of the central box girder being installed atop the concrete pier in the center of Columbus Drive. Columbus Drive was closed to traffic for a 12-hour period as workers installed three box girders making... |
