The only ore of tin that we care about is cassiterite.
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The revised proposal now applies only to iron ore and coal, and would kick in only when profits exceed 12% rather than the 5% in the original plan.
Around the U.S., only the Portland, Ore. area (22.4%) and Seattle (15.5%) come close to that exposure.
Rock-breakers work with geologists and surveyors to make sure that only profitable grades of ore are mined.
But if Freeport does not ramp up production quick enough to compensate for the lower quality of copper ore, it may end up producing only 1 billion pounds of copper each year during this period.
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Indeed US politicians took no notice of the development of the ORE-STEM complex that Seaborg and others supported as our only way to continual increase our living standards and wealth.
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Eyrie Vineyards in McMinnville, Ore. claims it typically sells out of its meunier in only ten days, though one year it all disappeared in a single weekend, says winemaker Jason Lett.
The world's top five steelmakers still command only around one-fifth of the global market, whereas the three leading ore firms control 70% of supplies.
Since 2007 Galantas Gold Corporation, a Canadian firm, has been working what is currently Britain's only gold-producing mine at Omagh, in Northern Ireland, shipping the ore to Canada and running a small gold-jewellery operation.
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American and Australian regulators had given the deal their approval, but the EU's competition authorities objected, and would probably have allowed it through only on the condition that BHP made significant divestments, in order to maintain competition in iron ore.
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