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  2. Mineral jig - Wikipedia

    en.wikipedia.org/wiki/Mineral_jig

    In metallurgy, mineral jigs are a type of gravity concentrator, separating materials with different densities. It is widely used in recovering valuable heavy minerals such as gold , platinum , tin , tungsten , as well as gemstones such as diamond and sapphire, from alluvial or placer deposits .

  3. Jigging - Wikipedia

    en.wikipedia.org/wiki/Jigging

    Fisherman jigging with a big fish from his boat Jigs. Jigging is the practice of fishing with a jig, a type of weighted fishing lure.A jig consists of a heavy metal (typically lead) sinker with an attached fish hook that is usually obscured inside a soft lure or feather-like decorations.

  4. Jig (tool) - Wikipedia

    en.wikipedia.org/wiki/Jig_(tool)

    An example of a jig is when a key is duplicated; the original is used as a jig so the new key can have the same path as the old one. Since the advent of automation and computer numerical controlled (CNC) machines, jigs are often not required because the tool path is digitally programmed and stored in memory. Jigs may be made for reforming plastics.

  5. Jig concentrators - Wikipedia

    en.wikipedia.org/wiki/Jig_concentrators

    Jig concentrators are devices used mainly in the mining industry for mineral processing, to separate particles within the ore body, based on their specific gravity (relative density). [1] The particles would usually be of a similar size, often crushed and screened prior to being fed over the jig bed. There are many variations in design; however ...

  6. Pocket-hole joinery - Wikipedia

    en.wikipedia.org/wiki/Pocket-hole_joinery

    A pocket hole jig is generally made of plastic and has a metal insert that the drill bit is inserted through to drill the hole. A jig can be a stationary device that the wooden pieces are clamped into, or a portable device that is clamped onto the wooden pieces. [3]

  7. Wilfley table - Wikipedia

    en.wikipedia.org/wiki/Wilfley_table

    Concentration of these minerals requires preconcentration techniques that include recovery of this fraction. Preconcentration may involve any number of methods including jigs, spirals, shaking tables, Knelson concentration, dense media separation, panning and hydroseparation. The Wilfley Table exploits preconcentration on the basis of density ...

  8. 1 in 3 older Americans take aspirin daily. What does it do?

    www.aol.com/1-3-older-americans-aspirin...

    Nearly one in three Americans over the age of 60 — roughly 19 million people — take aspirin daily, according to a 2021 study in Annals of Internal Medicine.. Should you be among that group?

  9. Roll bender - Wikipedia

    en.wikipedia.org/wiki/Roll_bender

    Roll bender machine. A roll bender is a mechanical jig having three rollers used to bend a metal bar into a circular arc. The rollers freely rotate about three parallel axes, which are arranged with uniform horizontal spacing.

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