Mr William Hauselberg's Article in Mobile Phones 
  
        
    
        
            | 1825 | Recent Innovations in Pittsburgh's Green Technology Once known as the City of Steel, Pittsburgh thrived as a major producer of metal and coal. Mills were plenty and generations worked together side-by-side in the heat and soot. Likewise, the city was covered in its own layer of soot. The residents prospered and enjoyed all that came with living in a blue collar city.
 Posted on Sep-06-2012
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