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Drilling rigs can be found in or near the communities that dot the oil and gas shale formations. This one was in Joaquin TX, which sits atop the Haynesville shale. Hundreds of drilling rigs are operating in shale formations across Texas.

$Tractor-trailer rigs hauling frac sand are photographed near Midland TX en route to a drilling rig. As many as 40 loads of frac sand are needed to frac each stage of a horizontally drilled well. A well may have 12 to 16 stages. The demand for frac sand ha$

$The fluid from the hydraulic fracturing process is nearly 99.5% water and sand. To create productive natural gas wells, companies force fluid thousands of feet below the surface at high pressure to crack shale rock and release trapped natural gas. This ex$