I went and knocked on the door of the Rio Tinto Chair of Advanced Mineral Extraction at the Royal School of Mines and said, "How do you make steel?" And Professor Cilliers was very kind and talked me
Fui a golpear la puerta del director del Centro de Extracción Mineral Avanzada de Río Tinto, en la Escuela Real de Minas y le dije: "¿Cómo se hace el acero?" Y