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silicon dioxide, also known as silica (from the latin silex), silicon dioxide is mostly obtained by mining including sand mining and purification of quartz.
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1 industrial silica sand (frac sand) mining operations moratorium report . final report: . red wing sustainability commission . red wing advisory
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allamakee county — a group of northeast iowans effectively has kept large frac sand mine companies from mining silica rich sand in their county by building a
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silica sand mining companies like u.s. silica holdings (nyse: slca) are likely to profit handsomely from the coming rise in natural gas.
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· silica dust comes from sand or dirt. it has been known to cause health problems including silicosis and lung cancer(1). while silica dust can be found on a sand mine, it can also be found on a construction site, while tilling the soil and really any profession that creates dust.
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the latest frac sand news, half a decade on from the collapse of the global mining boom, what is frac sand? silica sand or 'frac sand' is a durable,
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