E. M. Harper

Criticality of metals and metalloids

T. E. Graedel, E. M. Harper, Nedal T. Nassar et al. · Proceedings of the National Academy of Sciences · 2015 · 675 citations · Full text

On the materials basis of modern society

T. E. Graedel, E. M. Harper, Nedal T. Nassar et al. · Proceedings of the National Academy of Sciences · 2013 · 466 citations · Full text

By-product metals are technologically essential but have problematic supply

Nedal T. Nassar, T. E. Graedel, E. M. Harper · Science Advances · 2015 · 406 citations · Full text

Criticality of the Geological Copper Family

Nedal T. Nassar, Rachel Barr, Matthew H.E.M. Browning et al. · Environmental Science & Technology · 2011 · 168 citations

Engineering, Industrial Engineering, Rare Metal +19

Dining at the Periodic Table:  Metals Concentrations as They Relate to Recycling

Jeremiah Johnson, E. M. Harper, Reid Lifset et al. · Environmental Science & Technology · 2007 · 130 citations

Engineering, Metal Contamination, Waste Disposal +19