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Negative Effects Of Mining Gypsuml

Negative Effects Of Mining Gypsuml

Gypsum rock is mined or quarried crushed and ground into a fine powder. In a process called calcining the powder is heating to approximately 350 degrees F driving off three fourths of the chemically combined water. The calcined gypsum or hemihydrate becomes the base for gypsum plaster gypsum board and other gypsum products. .

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