Refrences

1) Kirsten Rollay, Department of Civil & Environmental Engineering Michigan Tech (2004). How Does a Landfill Work?. Retrieved from: []

2) Geoffrey Neuss (2007). Environmental chemistry, Waste. Location: Oxford New York

3) IDES The Plastics Web (2010). Plastic Recycling Codes Retrieved from: []

4)Nuclear Energy Institute (2010). Low-level Radioactive Waste Retrieved from: []