Bureau of Mines Research on the Recovery and Reuse of Post-consumer Scrap.
Afs Trans 1974 Oct; :487-494
The Bureau of Mines has a continuing research program aimed at developing technology that can increase the supply and utility of ferrous scrap. This research has resulted in the development of processes for separating incinerated urban refuse into its component parts and for burning junk automobiles smokelessly. In addition, methods have been devised for removing copper from high-carbon iron and for detinning incinerated cans, thereby increasing the utility of contaminated scrap. Other research has shown that impurities such as copper and tin can be tolerated in cast steels and gray irons, provided that the tin content does not exceed 0.08 pct.
Afs Trans., October 1974, PP. 487-494