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  2. Figure 8 (climbing) - Wikipedia

    en.wikipedia.org/wiki/Figure_8_(climbing)

    This device utilizes a large surface area in contact with a climbing rope to provide sufficient friction along with the proper technique to be used as a belay device or for rappelling. A figure 8 (sometimes just referred to as an 8) is used in conjunction with a climbing harness and locking carabiner to control a belayed climber's descent, or ...

  3. Swing yarder - Wikipedia

    en.wikipedia.org/wiki/Swing_yarder

    While there are various rigging options, the most common one uses a grapple that can be lowered onto a logs and closed via the cable system. Using a grapple avoids the need for people in the setting to attach chokers to the log. Choker setting as a profession is a very dangerous occupation.

  4. Single-rope technique - Wikipedia

    en.wikipedia.org/wiki/Single-rope_technique

    For safe single-rope technique, especially on drops with complex rigging with intermediate belays, it is essential that the abseiling device can be removed from the rope without being unclipped from the harness. This is a problem with the simplest device, the single piece figure eight. These also twist the rope, which is a problem if there is a ...

  5. Block and tackle - Wikipedia

    en.wikipedia.org/wiki/Block_and_tackle

    The cheeks are not fixed or locked in position aside from the device used to secure them to the load or rigging point. Examples of use (in an arboricultural setting) include: tail minding/tending, and for setting a rigging point in the tree above the cut to take place—a positive rigging situation.

  6. Timber hitch - Wikipedia

    en.wikipedia.org/wiki/Timber_hitch

    As the name suggests, this knot is often used by lumbermen and arborists for attaching ropes or chains to tree trunks, branches, and logs. [3] [5] For stability when towing or lowering long items, the addition of a half-hitch in front of the timber hitch creates a timber hitch and a half hitch, [6] or known as a killick hitch [2] when at sea. [7]

  7. Derrick - Wikipedia

    en.wikipedia.org/wiki/Derrick

    A derrick is a lifting device composed at minimum of one guyed mast, as in a gin pole, which may be articulated over a load by adjusting its guys. Most derricks have at least two components, either a guyed mast or self-supporting tower , and a boom hinged at its base to provide articulation, as in a stiffleg derrick.

  8. Woman Paralyzed by Falling Tree Can Move Again Thanks to ...

    www.aol.com/woman-paralyzed-falling-tree-move...

    Onward Therapy, the makers of the therapeutic ARC-EX device, explain that the non-invasive device works via electrodes placed on the back of the neck. View this post on Instagram A post shared by ...

  9. Rope rescue - Wikipedia

    en.wikipedia.org/wiki/Rope_rescue

    Belaying is the act of protecting the climber, rescue professional, or subject in the event of a fall. Various other devices used, including friction rappel (lowering) devices, which acts as a braking device on the rope. They are used for lowering a load, a subject or oneself (rappelling).

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