The industrial production of aluminum by the high-temperature electrolysis of alumina (Al2O3) dissolved in molten cryolite (Na3AlF6) was developed independently and almost simultaneously in 1886 by Charles Martin Hall in the United States and Paul H�roult in France. This presentation will literally describe the world of aluminum from cradle to grave, from the mining and purification of bauxite throughout the world to the recycling of discarded aluminum products, as illustrated on postage stamps and other philatelic materials (maximum cards, first day covers, special cancellations, etc.). The unique combination of physical properties that this ubiquitous metal exhibits (low density, high electrical conductivity, malleability, resistance to corrosion) and its impact on society, including the construction, transportation, and food industries, will also be highlighted in this presentation. 

Aluminum on stamps:  A tribute on the 125th anniversary of the Hall-H[eacute]roult process

242nd National Meeting (2011)

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