Methodology of steel cleanliness assessment M. Burty, C. Louis, P. Dunand, P. Osmont, F. Ruby-Meyer, M. Nadif, F. Penet, T. Isono, E. Takeuchi and T. Toh Rev. Met. Paris, 97 6 (2000) 775-782 Published online: 13 January 2017 DOI: 10.1051/metal/200097060775