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  2. Trepanning - Wikipedia

    en.wikipedia.org/wiki/Trepanning

    Detail from The Extraction of the Stone of Madness, a painting by Hieronymus Bosch depicting trepanation (c. 1488–1516). Trepanning, also known as trepanation, trephination, trephining or making a burr hole (the verb trepan derives from Old French from Medieval Latin trepanum from Greek trúpanon, literally "borer, auger"), [1] [2] is a surgical intervention in which a hole is drilled or ...

  3. Columbus and Franklin County Metro Parks - Wikipedia

    en.wikipedia.org/wiki/Columbus_and_Franklin...

    The Columbus and Franklin County Metro Parks system was created in 1945 after a study was commissioned by the Columbus and Franklin County planning commissioners.

  4. Scolytus rugulosus - Wikipedia

    en.wikipedia.org/wiki/Scolytus_rugulosus

    Scolytus rugulosus, known generally as shothole borer (variously spelt hyphenated or as two words), is a species of typical bark beetle in the family Curculionidae. Other common names include the fruit tree bark beetle and apple tree beetle .

  5. Columbus Recreation and Parks Department - Wikipedia

    en.wikipedia.org/wiki/Columbus_Recreation_and...

    In 1839, Columbus created its first park, five years after becoming a city. The park, Livingston Park, was made into an official public park in 1885. [3] In 1851, Dr. Lincoln Goodale donated 40 acres to the City of Columbus for use as a park.

  6. Underground pneumatic boring - Wikipedia

    en.wikipedia.org/wiki/Underground_pneumatic_boring

    The first hole is dug on one side of the obstacle. This hole must be large enough to fit the tool and allow the operator to aim it. The hole also must be deep enough so that, as the tool compacts the ground, the surface remains undisturbed. The depth of the starting bore pit depends on the type of soil being worked in and how well it compacts.

  7. Directional boring - Wikipedia

    en.wikipedia.org/wiki/Directional_boring

    Directional boring machine. Directional boring, also referred to as horizontal directional drilling (HDD), is a minimal impact trenchless method of installing underground utilities such as pipe, conduit, or cables in a relatively shallow arc or radius along a prescribed underground path using a surface-launched drilling rig.