Important: Safety Warning
This page describes trade processes that use dangerously toxic materials such as cyanide solutions, mercury amalgams, or strong acids. These processes require training, equipment, and precautions far beyond what the text describes.
This information has been left in for historical purposes but should not be acted upon.
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Cyanide Solution of Copper
wire with the piece of zinc in the porous cell, To prepare copper solutions by means of and immersed in the outer liquid, when it will cyanide of potassium, for covering iron and receive a deposit, but more slowly than when other positive metals, there are several metha battery is employed. ods, but the method adopted in manufacturing