Word: iridium
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Dates: during 1941-1941
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...Under "a mild form" of inventory control were 15 other metals: antimony, cadmium, chromium, cobalt, ferrous alloys, iridium, iron & steel products, lead, manganese, mercury, molybdenum, nonferrous alloys, tin, vanadium. Users of these must file statements monthly that they are not increasing their inventories...