Defunct Bethlehem Steel's 21-story headquarters imploded  TribLIVEHistoric Martin Tower’s 21-Story Headquarters In Bethlehem Imploded  CBS PhillyMartin Tower in Bethlehem is razed to the ground  lehighvalleylive.comShuttered steelmaker's 21-story headquarters implodes  New York Post Your View: Steeling myself for Sunday’s demolition of Martin Tower  Allentown Morning CallView full coverage on Google News