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  2. Shaft sinking - Wikipedia

    en.wikipedia.org/wiki/Shaft_sinking

    The most visible feature of a traditionally-built mine shaft is the headframe (or winding tower, poppet head or pit head) which stands above the shaft. Depending on the type of hoist (or winder) used, the top of the headframe will either house a hoist motor or a sheave wheel (with the hoist motor mounted on the ground).

  3. List of building and structure collapses - Wikipedia

    en.wikipedia.org/wiki/List_of_building_and...

    This is a list of structural failures and collapses of buildings and other structures including bridges, dams, and radio masts/towers. This is a dynamic list and may never be able to satisfy particular standards for completeness.

  4. Contractor behind WTC scaffold collapse cited in previous ...

    www.aol.com/news/2014-11-13-contractor-behind...

    A 2008 incident involving a scaffold collapse 47 floors over Manhattan, which occurred only months after Tractel repaired the faulty equipment, resulted in the death of one of two window washers ...

  5. Movable scaffolding system - Wikipedia

    en.wikipedia.org/wiki/Movable_scaffolding_system

    A movable scaffolding system (MSS) is a special-purpose self-launching form used in bridge construction, specifically prestressed concrete bridges with segments or spans that are cast in place. The movable scaffolding system is used to support a form while the concrete is cured; once the segment is complete, the scaffold and forms are moved to ...

  6. Scaffolding - Wikipedia

    en.wikipedia.org/wiki/Scaffolding

    Scaffolding for rehabilitation in Madrid, Spain [1] Scaffolding for renovation on the Virgin Mary statue, Santiago de Chile, Chile.. Scaffolding, also called scaffold or staging, [2] is a temporary structure used to support a work crew and materials to aid in the construction, maintenance and repair of buildings, bridges and all other human-made structures.

  7. Willow Island disaster - Wikipedia

    en.wikipedia.org/wiki/Willow_Island_disaster

    On April 27, 1978, tower number 2 had reached a height of 166 feet (51 m). Just after 10:00 a.m., the previous day's concrete started to collapse under the weight of the scaffolding and the construction workers on it. Concrete and scaffolding began to unwrap from the top of the tower, first peeling counter-clockwise, then in both directions.

  8. Nick Cannon Acknowledges 'I Need Help' as He Reveals His ...

    www.aol.com/nick-cannon-acknowledges-help...

    Nick Cannon is getting candid about his mental health journey. Earlier this month, the Masked Singer host, 44, shared he had been diagnosed with narcissistic personality disorder.For the star ...

  9. Headframe - Wikipedia

    en.wikipedia.org/wiki/Headframe

    Headframe of the #1 Shaft at Oyuu Tolgoi. A steel headframe is less expensive than a concrete headframe; the tallest steel headframe measures 87 m. [4] Steel headframes are more adaptable to modifications (making any construction errors easier to remedy), and are considerably lighter, requiring less substantial foundations.

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