व्हिच ऑफ द फॉलोइंग इज नॉट अ लागू ब्लैक
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Where are following
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In conventional natural gas deposits, the natural gas generally flows easily up through wells to the surface. In the United States and in a few other countries, natural gas is produced from shale and other types of sedimentary rock formations by forcing water, chemicals, and sand down a well under high pressure.
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