The Recycled Materials Resource Center is a federal-university partnership that serves as a research and outreach facility for the highway community, and a ...
http://www.rmrc.unh.edu/

Iron and steel are the world's most recycled materials, and among the easiest materials to reprocess, as they can be separated magnetically from the waste stream.
http://en.wikipedia.org/wiki/Recycling

Summary The safest, easiest and least expensive ways to reduce material production and disposal impacts are to produce less, use less, re-use more and recycle everything possible.
http://www.neo.ne.gov/home_const/factsheets/recycled_const_m ...

Construction Materials Recycling Association - Members since 1996
http://www.rmci-usa.com/

... Thank you for stopping by our new home on the World Wide Web. If this is your first visit, Amazing Recycled Products manufactures and sells products made from recycled materials.
http://www.amazingrecycled.com/