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  2. Land drains - Wikipedia

    en.wikipedia.org/wiki/Land_drains

    The earliest type consisted of a "u" shaped trough onto which a flat lid was placed. Later the extruded clay pipe was developed. These are still used. These can be laid in an excavated trench, or a horizontal hole is formed in the ground using a mole plough and the pipes are forced in by means of a hand or mechanical press. By this means, heavy ...

  3. Vitrified clay pipe - Wikipedia

    en.wikipedia.org/wiki/Vitrified_clay_pipe

    Vitrified clay pipe (VCP) is pipe made from a blend of clay and shale that has been subjected to high temperature to achieve vitrification, which results in a hard, inert ceramic. VCP is commonly used in gravity sewer collection mains because of its long life and resistance to almost all domestic and industrial sewage , particularly the ...

  4. Broseley Pipeworks - Wikipedia

    en.wikipedia.org/wiki/Broseley_Pipeworks

    Once the site of the most prolific clay tobacco pipe makers in Britain, exporting worldwide, the works were abandoned in the 1950s. Pipeworks bottle kiln. The museum preserves the details of the industry of clay tobacco pipe making and has a display of clay tobacco pipes, including the Churchwarden and Dutch Long Straw pipes. [1]

  5. White pipe clay - Wikipedia

    en.wikipedia.org/wiki/White_pipe_clay

    A group of English clay pipes, from the early 17th to late 19th century, none complete, Bedford Museum, 2010. White pipe clay (Dutch: pijpaarde) is a white-firing clay of the sort that is used to make tobacco smoking pipes, which tended to be treated as disposable objects. This suited pipeclay, which is not very strong.

  6. Rixton Clay Pits - Wikipedia

    en.wikipedia.org/wiki/Rixton_Clay_Pits

    Rixton Clay Pits (also known as Rixton Claypits) is a former clay extraction site in Rixton, near Hollins Green, Warrington, England. Formerly farmland, boulder clay extraction started in the 1920s for brick making in the adjacent brickworks and ceased in 1965 – since then it has been allowed to return to nature.

  7. Puddling (civil engineering) - Wikipedia

    en.wikipedia.org/wiki/Puddling_(civil_engineering)

    To make puddle, clay or heavy loam is chopped with a spade and mixed into a plastic state with water and sometimes coarse sand or grit to discourage excavation by moles or water voles. The puddle is laid about 10 inches (25 cm) thick at the sides and nearly 3 ft (0.91 m) thick at the bottom of a canal, built up in layers.