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When the hydraulic pressure is removed from the well, small grains of hydraulic fracturing proppants (either sand or aluminium oxide) hold the fractures open. Hydraulic fracturing began as an experiment in 1947, and the first commercially successful application followed in 1950.
Buy the mug Buy the tshirt. 5. Fracking. Like the term used in oil and gas mining where water is pumped with high pressure into the ground to bring hidden treasure to the surface, Fracking, in the world of adventurous sex, is a term describing an act where dicks are used as a high pressure douching implements.