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Gold Smelting & Refining Process
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Refining (metallurgy) - Wikipedia
In one of the melting stages, lead was added. Gold and silver preferentially dissolved in this, thus providing a means of recovering these precious metals.
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Topical Bible: Refining
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Gold Refining Process - Mineral Processing & Metallurgy
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Precious Metal Refining Process | The Perth Mint
Precious Metal Refining Process. Home The diagram below gives an overview of the key processes involved in the refining of gold and silver.
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