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Iron and steel: environmental impact | . The iron and steel industry was the emblem of the industrial revolution in the 19th and early 20th century United States, playing an important role in shaping the ... Ancient Egypt: Mining - Reshafim Ancient Egyptian mining: copper, gold, silver, iron, precious stones, salt, natron, galena, alum Mining - Wikipedia Mining as an industry underwent dramatic changes in medieval Europe. The mining industry in the early Middle Ages was mainly focused on the extraction of copper and iron.    Read More