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New production methods are rejuvenating older oilfields and generating new work for crude oil haulers. In addition, some of the shale formations are producing oil and natural gas.

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

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