A state study has concluded that sand from western South Dakota is not suitable for use in the oil and gas industry.
South Dakota's Department of Environment and Natural Resources studied whether silica sand found mainly in the Black Hills was suitable for hydraulic fracturing. The method known as fracking involves pumping water, sand and chemicals underground to break up shale rock and allow oil to flow.
Fracking is used extensively in the booming western North Dakota oil fields, and officials wanted to know whether western South Dakota might benefit. But the study found that the sand there didn't have the right qualities.
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