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The top documents tagged [mining of copper]
1450-1750 Part II. The forced labor of natives to work in Spanish mines during the 1500s was called the _____ system. A) mita or repartimiento B) conquistadore
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National Parks By Rachael Dean What are they? A National Park is a reserve of land, usually owned by a national government, which is protected from most
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Argentina Sustainable Development
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Important Treaties for Ojibwe Indians in Wisconsin
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Cochilco Mining in Chile Future y Challenges Rusia Bielorrusia
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Mining/Environmental Chemistry 5.5, 5.6, 5.7. Metallurgy Extraction of metals from their rock (ore) – Mining the Ore – Grinding and primary processing
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