Salter Spiral Stair, based in Collegeville, PA, recently announced the completion of their year-long project at the Philadelphia Zoo where they worked with architects and contractors to build a variety of spiral stairs. These stairs were designed for both exhibit and maintenance use, which were installed this spring.
(PRWeb May 07, 2013)
Read the full story at http://www.prweb.com/releases/2013/5/prweb10704275.htm
