Cyanide-process Sentence Examples

cyanide-process

  • The yield reached its lowest point in 1899, but subsequently increased through the application of improved machinery, while the tailings of the old diggings were treated by the cyanide process with profitable results.

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  • The cyanide process of gold extraction, and the returns obtained by its means from the great Waihi mine in the Upper Thames, caused an outbreak of gold fever, which led to the opening up of a few good and a great many worthless quartz-mines in the Auckland fields.

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  • The improved dioxide cyanide process was adopted about 1895.

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