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Re: Old Furnace's??? May 06, 2000 at 21:05:55 In Reply to: Old Furnace's??? posted by Desert Eagle on May 06, 2000 at 17:15:12 1]How do you know they were Spanish? There is not much of the Spanish mining perioed left today tho much is attributed to them 2] How do you know they were used to smelt ore? Furnaces were also used to roast pyritic ores to drive off the sulfur so the ore could be milled.
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