One wrote to me: "Dear Natalia,
usually raw materials are ores, I agree. In this study, however, both ores and materials were designated as "raw materials". In the end it doesn't matter, because I need the ore to produce materials / finished products (metal and others)."
I wrote to him: " I'd love to see your face when they bring you a dumper with "Raw material" or "Mineral"; but not "Metal"."
Ph.D. Natalia Petrovskaya
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