Officially identified as Column 1001-B, the steel beam, one of 47 that held up the South Tower, was quickly plastered with Mass cards, rosary beads, flags, photos of missing innocents, letters from ...
On cover: Iron and steel beams, 1873-1952. siris_sil_247895 ...
New research and development of structural steel construction methods was the primary focus of the North American Steel Construction conference, held April 22 to 24 in Atlanta.
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