Brass zinc, especially between the Islamic and Byzantine world. Conversely the use of true brass seems to have declined in Western Europe during this period in favour of gunmetals and other mixed alloys but by about 1000 brass artefacts are found in Scandinavian graves in Scotland, brass was being used in the manufacture of coins in Northumbria and there is archaeological and historical evidence for the production of calamine brass in Germany and The Low Countries, areas rich in calamine ore. These places would remain important centres of brass making throughout the medieval period, especially Dinant. Brass objects are still collectively
American Brass Company Inc., the next largest brass manufacturer, was able to expand its market share significantly as American Brass lagged. Despite its managerial challengers, American Brass was still a highly innovative company. It developed and patented a process for constructing hollow and ventilated busses from rectangular copper bars. The company also developed numerous new and unique metallurgical processes and alloys. On January 1, 1912, the companies held by American Brass were dissolved and all of the firm's divisions began operating under the name of the American Brass Company. The company also expanded, taking over the Chicago Brass Company of Kenosha, Wisconsin; Waterbury