Brass patented a technique for the first industrial scale distillation of metallic zinc known as "distillation per descencum" or "the English process." This local zinc was used in speltering and allowed greater control over the zinc content of brass and the production of high-zinc copper alloys which would have been difficult or impossible to produce using cementation, for use in expensive objects such as scientific instruments, clocks, brass buttons and costume jewellery. However Champion continued to use the cheaper calamine cementation method to produce lower-zinc brass and the archaeological remains of bee-hive shaped cementation furnaces have been identified at his works
Industrial metal with the success of groups such as Nine Inch Nails. The industrial metal movement began to fade in the latter half of the 1990s. Though electric guitars had been used by industrial artists since the early days of the genre, archetypal industrial groups such as Throbbing Gristle displayed a strong anti-rock stance. British post-punk band Killing Joke pioneered the crossing over between styles, and was an influence on major acts associated with industrial metal such as Ministry, Godflesh, and Nine Inch Nails. Another pioneer industrial rock group, Big Black, also impacted some later groups. By the late 1980s industrial and