The Pittsburgh-Des Moines Steel Company (originally the Des Moines Bridge and Iron Company), and often referred to as Pitt-Des Moines Steel or PDM was an American steel fabrication company. It operated from 1892 until approximately 2002 when its assets were sold to other companies, including Chicago Bridge & Iron Company.[1][2][3] The company began as a builder of steel water tanks and bridges. It also later fabricated the "forked" columns for the World Trade Center in the 1960s,[1] and was the steel fabricator and erector for the Gateway Arch in St. Louis.[4][5] A number of its works are listed on the National Register of Historic Places.[6][7]
- ^ a b Lukens Historic District - excerpt from email from John R. Adams
- ^ "Steel company executive put business before self". Trib Live. May 2, 2003.
- ^ Jim Foster and Rich Lundgren (1992). Towering over America: An Illustrated History of Pitt-Des Moines, Inc. Pitt-Des Moines, Incorporated. ISBN 9780898658378.
- ^ A Sightseer's Guide to Engineering: Gateway Arch
- ^ National Park Service - Fabricating the Steel
- ^ "National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010.
- ^ Highway Bridges of Iowa MPS