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)
The Essence of Black Purity The Essence of Black Purity The Essence of Black Purity is the third release by the black metal band Watain. It was released in 1999 on EP format on Grim Rune Records and was limited to 300 copies. Grim Rune website mentions that the EP "got a generally good response in the underground circuits." Similarly, Eduardo Rivadavia of "Allmusic" wrote that Watain "quickly gain[ed] underground credibility" with this "uncompromising 7" release". When asked his opinion about Watain's older albums, vocalist Erik Danielsson said: "I appreciate them for what they are, monuments of what we were before, pieces of evolution. The