Miller process Miller process The Miller process is an industrial-scale chemical procedure used to refine gold to a high degree of purity (99.95%). It was invented by Francis Bowyer Miller ( patented 1867). This chemical process involves blowing a stream of pure chlorine gas over and through a crucible filled with molten, but impure, gold. This process purifies the gold because nearly all other elements will form chlorides before gold does, and they can then be removed as salts that are insoluble in the molten metal. When all impurities have been removed from the gold (observable by a change in flame color)
Refine M6 updating the grilles, placing the Refine M6 more inline with the other JAC Refine products. Refine M6 The Refine M6 is a minivan produced by Chinese auto maker JAC under the Refine sub-brand since 2013. Despite its dimensions being smaller than the Refine M4, it is the most premium Refine MPV, sitting above the Refine M3, Refine M4, and Refine M5 making it the flagship of the Refine brand. According to the official website, pricing for the Refine M4 ranges from 239,500 to 349,500 yuan, positioning the Refine M6 above the Refine M5. The design of the Refine M6 is