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be well-ventilated. be sure to pay attention to dust protection. history iron has been known to mankind from early civilization. in fact, a period of history, the "iron age," is named for the widespread use of this metal. for almost a thousand years, it remained as the single most-used metal, and its
. mg/l. the principal ores of iron are hematite, fe o ; pyrite, fe s ; ilmenite, fetio ; magnetite, fe o ; siderite, fe co ; and limonite [feo(oh)]. it also is found in a number of minerals, such as corundum, as an impurity. it also is found in meteorites. iron occurs in every mammalian cell and is...
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