1. US Environmental Protection Agency 2002 http://www.epa. gov/epawaste/partnerships/wastewise/ pubs/wwupda16.pdf
2. National Association of Home Builders, National Green Building Program http://www. nahbgreen.org/Guidelines/ansistandard.aspx
3. “Norsk Hydro Opens New Aluminum Recycling Furnace.” Recycling Today 2007
4. “The Fiery UBC Furnace.” Recycling Today 2001
5. “Evaluating the Potential for Recycling All PET Bottles into New Food Packaging.”;Begley;Food Additives and Contaminants,2002