1. Multilevel Cycles, Models, and Scenarios for Iron Alloying Elements (Characterize the cycles, develop scenarios, integrate economic and material flow models, explicate policy options) T.E. Graedel, Yale University R.J. Lifset, Yale University R.B. Gordon, Yale University T. J. Considine, Penn. State Univ. D. Müller, J. Dong, E. Harper, J. Jirikowic, J. Johnson, B. Reck, T. Wang

2. Iron cycle: One year stocks and flows, USA, 1999 STAF Project © Yale University 2004

3. Multi-cycle linkage: 3 layers Goods Compounds Elements STAF Project © Yale University 2004 Cycles: Will be complete by summer, 2005MFA Model: Formulation well along Economic model: Under development for SSScenarios: Not yet addressed Museum exhibit: Projected for 2007