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In truth Iron extracted from sand with a magnet. You loose 1/2 when you melt it down. But is near pure. Slow but sure. For small scale separation of sand from iron filings, See this article: How...
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In truth Iron extracted from sand with a magnet. You loose 1/2 when you melt it down. But is near pure. Slow but sure. For small scale separation of sand from iron filings, See this article: How...