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
John Miller (North Dakota politician) John Miller (North Dakota politician) John Miller (October 29, 1843October 26, 1908) was a bonanza farmer, business man and American Republican politician in North Dakota. He served as the first Governor of North Dakota from 1889 to 1891, after it was admitted as a state to the union. Born in the Finger Lakes region of New York state, Miller had moved to the Dakota Territory in 1878. With a partner he bought thousands of acres of land for what was called bonanza farming: large-scale farming of wheat as a commodity crop on an industrial scale. The Northern Pacific Railroad connected