metal circulation
121Coinage metals — The coinage metals comprise, at minimum, those metallic chemical elements which have historically been used as components in alloys used to mint coins. The term is not perfectly defined, however, since a number of metals have been used to make… …
122Pound sterling — GBP redirects here. For other uses, see GBP (disambiguation). Pound sterling Peuns sterling (Cornish) Punt steirling (Irish) Punt Sostynagh …
123Lincoln cent — United States Value 1 cent (.01 United States dollars) Mass  2.5 g  (0.080 troy oz) Diameter  19.05 mm  (0.750 in) Edge …
124Ore genesis — The various theories of ore genesis explain how the various types of mineral deposits form within the Earth s crust. Ore genesis theories are very dependent on the mineral or commodity. Ore genesis theories generally involve three components:… …
125History of the English penny (c. 600-1066) — After Rome: prelude to the Anglo Saxon coinageAt the end of the fourth century, the Roman provinces of Britain were still part of a vibrant and quite efficient economic and monetary system that stretched over the whole Roman world. Precious metal …
126environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… …
127Matthew Boulton — 1792 portrait of Matthew Boulton Born 3 September 1728(1728 09 03) Birmingham, England …
128Coins of the Canadian dollar — Canadian coinage is the coinage of Canada, produced by the Royal Canadian Mint and denominated in Canadian dollars ($) or cents (¢). Contents 1 Denominations 2 Changes in coinage 3 Production …
