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 - The Cletrac General GG and the BF Avery A - A Bit of History - by Mike Ballash. This article is a summary of what I have gathered up from various sources on the Gletrac General GG and the B. F. Avery model A tractors. I am quite sure that most of it is accurate. The General GG was made by the Cleveland Tractor Company (Cletrac) of Cleveland, Ohio. Originally the company was called the Cleveland Motor Plow Company which began in 1912, then the Cleveland Tractor Company (1917) and finally Cletrac.
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