Gold costs were about $317 per troy ounce in 2007, but these can vary widely depending on mining type and ore quality; global mine production amounted to 2,471.1 tonnes. After initial production, gold is often subsequently refined industrially by the Wohlwill process which is based on electrolysis or by the Miller process, that is chlorination in the melt. The Wohlwill process results in higher purity, but is more complex and is only applied in small-scale installations. Other methods of assaying and purifying smaller amounts of gold include parting and inquartation as well as cupellation, or refining methods based on the dissolution
Ways to Strength and Beauty feature Leni Riefenstahl. Ways to Strength and Beauty Ways to Strength and Beauty () is a 1925 German silent film directed by Nicholas Kaufmann and Wilhelm Prager. The film was produced by Ufa-Kulturfilmabteilung of Weimar Germany. The action was an idealized, somewhat naive depiction of health and beauty in conformity with nature. The film offered a contrast to the rather hopeless lifestyles available in Berlin and other large cities of Germany during the twenties and became an immediate success. Finally it became the most popular and most important German "kulturfilm" of this period. The film is best known as the