heap roasting
heap roasting
[′hēp ‚rōst·iŋ] (mining engineering)
A process in which ore with a high sulfur content is roasted by the combustion of the sulfur.
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The new smelter in Copper Cliff begins operations, marking the end of heap roasting.
MacMillan discusses the public outcry over extremely high death rates due to noxious smoke from heap roasting, the struggles of farmers to protect their livestock and crops from harmful pollution, and the federal government's protest of damage to national forests.
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