While I agree that even the OSHA site indicates that Zinc causes a temporary flu like symptom, lasting a day or two, the controversy is far from decided. 2 million hits on Google. The mining of Zinc, and its smelting often allow several other materials and compounds into the "alloy" including Cadmium. These combined with the Zircon and Manganese often associated with rod fluxes and chromium vanadium oxides from high strength steels are troublesome. If one gets ill from the zinc, one is very likely getting a dose of all sorts of other gassed out metal oxides. Good practice is the answer. JimN
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Today's Featured Article - History of the Nuffield Tractor - by Anthony West. The Nuffield tractor story started in early 1945. The British government still reeling from the effects of the war on the economy, approached the Nuffield organization to see if they would design and build an "ALL NEW" British built wheeled tractor, suitable for both British and world farming.
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