Hydraulic fracturing (also fracking, fraccing, frac'ing, hydrofracturing or hydrofracking) is a well stimulation technique in which rock is fractured by a pressurized liquid. The process involves the high pressure injection of 'fracking fluid' (primarily water, containing sand or other proppants suspended with the aid of thickening agents) into a wellbore to create cracks in the deep rock
The items of militaria shown below can be viewed in our on line shop complete with full descriptions, photographs and prices. British Basket Hilted Swords A Typology of Basket Type Sword Hilts Hardcover by Cyril Mazansky. The phrase basket type hilts refers to a large group of hilts which provide a degree of protection to the hand and wrist.
abacus a counting device using beads > ABACI or ABACUSES. abdomen the posterior division of the body in insects, spiders, and some other arthropods > ABDOMENS or ABDOMINA.
Uranium is a chemical element with symbol U and atomic number 92. It is a silvery grey metal in the actinide series of the periodic table.A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons.Uranium is weakly radioactive because all isotopes of uranium are unstable, with half lives varying between 159,200 years and 4.5 billion years.
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