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  2. Earth auger - Wikipedia

    en.wikipedia.org/wiki/Earth_Auger

    A skid-steer loader with an earth auger attachment. Construction drill auger. Hand-powered earth augers are typically used to plant saplings and trees or to set up posts for fences or other ends. [7] Large mechanized earth augers, called drilling rigs, are used to make holes for piles destined to be deep foundations or retaining wall. [citation ...

  3. Seismic source - Wikipedia

    en.wikipedia.org/wiki/Seismic_source

    An air gun seismic source (30 litre) A seismic source is a device that generates controlled seismic energy used to perform both reflection and refraction seismic surveys. A seismic source can be simple, such as dynamite, or it can use more sophisticated technology, such as a specialized air gun.

  4. Earthquake valve - Wikipedia

    en.wikipedia.org/wiki/Earthquake_Valve

    An earthquake valve (or seismic valve) is an automatic method to shut off the low pressure regulated gas supply to a structure during a major earthquake and/or if a pipe is broken. These are applicable both to utility-supplied natural gas and to gas from liquefied petroleum gas (LPG).

  5. Post hole digger - Wikipedia

    en.wikipedia.org/wiki/Post_hole_digger

    A post hole clam-shell digger, also called post hole pincer or simply post hole digger, is a tool consisting of two articulated shovel-like blades, forming an incomplete hollow cylinder about a foot long and a few inches wide, with two long handles that can put the blades in an "open" (parallel) position or a "closed" (convergent) position.

  6. Auger - Wikipedia

    en.wikipedia.org/wiki/Auger

    Auger bit, a drill bit; Auger conveyor, a device for moving material by means of a rotating helical flighting; Auger (platform), the world's first tension leg oil rig; see Big, Bigger, Biggest; Earth auger, a drilling tool or machine used for making holes in the ground; Wood auger, a drill for making holes in wood (or in the ground)

  7. Tractor PTO auger - Wikipedia

    en.wikipedia.org/wiki/Tractor_PTO_auger

    This in turn will provide power to the Tractor PTO Auger's gearbox. Most modern [1] Tractor PTO Auger gearboxes come standard with a shear bolt to protect the gear drive if the auger encounters an obstruction such as rock during drilling a hole. Tractor PTO Augers connect via 3 point hitch to subcompact tractors and mid-size tractors. [2]