Report of Professor R.S. Mcculloh, to the Secretary of the Treasury, Upon Refining Gold With Zinc

This technical report offers a detailed analysis of the process of refining gold using zinc, as developed by Professor R.S. McCulloh. Drawing upon his extensive expertise in the field of metallurgy, McCulloh provides a rigorous and highly informative account of this innovative method, which promises to revolutionize the gold refining industry.

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