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  2. Hook (hand tool) - Wikipedia

    en.wikipedia.org/wiki/Hook_(hand_tool)

    It may be called a box hook, cargo hook, loading hook, docker's hook when used by longshoremen, and a baling hook, bale hook, or hay hook in the agricultural industry. Other variants exist, such as in forestry, for moving logs, and a type with a long shaft, used by city workers to remove manhole covers .

  3. Manhole cover - Wikipedia

    en.wikipedia.org/wiki/Manhole_cover

    A manhole pick or hook is typically used to lift them, though other tools can be used as well, including electromagnets. Painted manhole cover in Osaka , Japan Although the covers are too large to be easily collectible , their ubiquity and the many patterns and descriptions printed on them has led some people to collect pictures of covers from ...

  4. Precast concrete lifting anchor system - Wikipedia

    en.wikipedia.org/wiki/Precast_concrete_lifting...

    F/n = 23 kN per anchor during initial lift (n = 2 lifting anchors) Transport loads in the yard and on-site Suction due to casting bed adhesion is not considered, as the calculation takes into account the lifting device dynamic coefficient. S = (W x Ksl x Kd) / n = (64.8 x 1.16 x 1.2) / 2 = 45.1 kN load resistance required per anchor

  5. Manhole cover lifter can save the back of workers

    www.aol.com/manhole-cover-lifter-save-back...

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  6. Manhole - Wikipedia

    en.wikipedia.org/wiki/Manhole

    Manhole covers in Helsinki, Finland. Manhole closings are protected by a grating or manhole cover, a flat plug designed to prevent accidental or unauthorized access to the manhole. These covers are traditionally made of metal, [2] but may be constructed from precast concrete, glass reinforced plastic or other composite materials (especially ...

  7. Manhole cover explodes in downtown Detroit, leaving one ...

    www.aol.com/manhole-cover-explodes-downtown...

    A manhole cover in downtown Detroit, at the corner of Congress and Bates, launched off the ground Friday afternoon, sending one to the hospital.

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