Document Retrieval and Request Hanford Building Trades will offer its most requested publications for download in Portable Document Format (PDF). PDF files are printer independent that can easily print a duplicate of the original using any graphics printer (i.e., laser, inkjet, dot-matrix or plotter). To read and print a PDF publication, you must have the Adobe Acrobat Reader software installed on your PC. Adobe Systems, Inc. permits organizations to offer this software to the public free of charge. To download the Adobe Acrobat Reader version suitable for your system, double click on the blue splash above. Check back often to see which publications are currently available.