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<p>Cyanide process<br />Mines and mineral resources -- Mexico -- Hidalgo (State)<br />Silver mines and mining -- Mexico -- Hidalgo (State)</p>

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Study Of The Monthly Extraction Record And Curve Of A Modern Mexican Cyanide Plant, George William Harris Jan 1915

Study Of The Monthly Extraction Record And Curve Of A Modern Mexican Cyanide Plant, George William Harris

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"This data is taken from the records of the mill and cyanide plant belonging to Compania de Minas La Blanca y Anexas, S.A., Pachuca, Hidalgo, Mexico; of which the writer has been in charge during the four years it has been in operation. The plant may be termed a "silver plant" as the silver values predominate, the ratio being about 200 grams of silver to 1 gram of gold"--Introduction, page 1.