| 1. | These solutions are reported to be used in the gold cyanidation process.
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| 2. | The roasting-cyanidation Carlton Mill opened in March 1951.
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| 3. | Cyanidation of tailings commenced on the Croydon Goldfield in 1894.
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| 4. | The mined ore is processed with gold cyanidation.
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| 5. | The Forrest-McArthur cyanidation process of treating mill tailings was perfected by 1895.
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| 6. | Recovery rates for silver were below 7 %, because the metal is bound within cyanidation processing.
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| 7. | The processing techniques can include grinding, concentration, roasting, and pressure oxidation prior to cyanidation.
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| 8. | One source of controversy involved the method used for mining, gold cyanidation, which causes pollution.
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| 9. | To improve the leaching process in the gold cyanidation, lead ( II ) nitrate solution is added.
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| 10. | Since around the year 2000, lead ( II ) nitrate has begun to be used in gold cyanidation.
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