Wohlwill process and electricity travels through the electrolyte of chloroauric acid. Gold and other metals are dissolved at the anode, and pure gold (coming through the chloroauric acid by ion transfer) is plated onto the gold cathode. When the anode is dissolved, the cathode is removed and melted or otherwise processed in the manner required for sale or use. The resulting gold is 99.999% pure, and of higher purity than gold produced by the other common refining method, the Miller process, which produces gold of 99.95% purity. For industrial gold production the Wohlwill process is necessary for highest purity gold applications. When
Four Ways to Forgiveness Four Ways to Forgiveness Four Ways to Forgiveness is a collection of four short stories and novellas by American writer Ursula K. Le Guin. All four stories are set in the future and deal with the planets Yeowe and Werel, both members of the Ekumen, a collective of planets used by Le Guin as part of the background for many novels and short stories in her Hainish Cycle. In 2017 it was reissued as an e-book, augmented with a fifth related story by Le Guin, as Five Ways to Forgiveness. The stories in the book are set on two planets