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  2. Oppenheimer pole - Wikipedia

    en.wikipedia.org/wiki/Oppenheimer_pole

    Wooden poles are also vulnerable to fire and much of the line's route suffers frequent bushfires. Many poles were later replaced with Oppenheimer poles for this reason. [1] The initial order for 6,000 poles [2] may have been made in Germany by Oppenheimer and Company (it is not certain) but later production took place in England under licence. [3]

  3. Jack post - Wikipedia

    en.wikipedia.org/wiki/Jack_post

    Jack posts are telescopic tubular steel props consisting of two primary parts, the main part of the post, and the jack screw or other adjustable fitting on one or both ends. Both ends are normally fitted with flat metal plates on the end, providing additional support area.

  4. Telescoping (mechanics) - Wikipedia

    en.wikipedia.org/wiki/Telescoping_(mechanics)

    Telescoping in mechanics describes the movement of one part sliding out from another, lengthening an object (such as a telescope or the lift arm of an aerial work platform) from its rest state. [1] In modern equipment this can be achieved by a hydraulics , but pulleys are generally used for simpler designs such as extendable ladders and amateur ...

  5. Bird control spike - Wikipedia

    en.wikipedia.org/wiki/Bird_control_spike

    A bird deterrent attached to a light pole on the Houghton Highway viaduct, Australia. The spikes can become clogged by leaves, debris and bird feathers. If left unchecked, this can allow birds to perch easily on top. In addition, spikes can make buildings appear less attractive or untidy, especially landmark buildings. [9]

  6. Galliformes - Wikipedia

    en.wikipedia.org/wiki/Galliformes

    Galliformes / ˌ ɡ æ l ɪ ˈ f ɔːr m iː z / is an order of heavy-bodied ground-feeding birds that includes turkeys, chickens, quail, and other landfowl.Gallinaceous birds, as they are called, are important in their ecosystems as seed dispersers and predators, and are often reared by humans for their meat and eggs, or hunted as game birds.

  7. Jack Finch (conservationist) - Wikipedia

    en.wikipedia.org/wiki/Jack_Finch_(conservationist)

    In 1990, Finch's efforts to save bluebirds was featured on the CBS Evening News with Dan Rather as part of the celebration of the 20th anniversary of Earth Day. [7]: 59–60 Correspondent Bob McNamara remembers that story as one of his favorites.

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