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  2. 15 cm Luftminenwerfer M 15 M. E. - Wikipedia

    en.wikipedia.org/wiki/15_cm_Luftminenwerfer_M_15...

    The 15 cm Luftminenwerfer M 15 M. E. (Pneumatic Trench Mortar Maschinenfabrik Esslingen) was a medium mortar used by Austria-Hungary in World War I. It was developed by the German firm Maschinenfabrik Esslingen in response to a German requirement. Its initial testing was observed by an Austro-Hungarian representative and his positive report ...

  3. 10.5 cm Luftminenwerfer M 15 - Wikipedia

    en.wikipedia.org/wiki/10.5_cm_Luftminenwerfer_M_15

    The 10.5 cm Luftminenwerfer M 15 (Pneumatic Trench Mortar) was a medium mortar used by Austria-Hungary in World War I. It was developed by the German firm of Ehrhardt & Sehmer. [1] It was a rigid-recoil, muzzle-loading mortar on a fixed base that used compressed air to propel the mortar bomb to the target.

  4. Trench shoring - Wikipedia

    en.wikipedia.org/wiki/Trench_shoring

    Trench shoring is the process of bracing the walls of a trench to prevent collapse and cave-ins. The phrase can also be used as a noun to refer to the materials used ...

  5. Underground pneumatic boring - Wikipedia

    en.wikipedia.org/wiki/Underground_pneumatic_boring

    Underground pneumatic drills can be used in the installation of public utilities like power lines, gas lines, phone cables, and cable television. It can also be used to install residential lawn irrigation systems. Boring is especially useful when it is difficult or cost-prohibitive to plow or trench.

  6. Shoring - Wikipedia

    en.wikipedia.org/wiki/Shoring

    Shoring is a term used in the process of air freight container and pallet (ULD) buildup, e.g. making sure that the cargo placed in containers and on pallets is packed securely and efficiently. Specifically, shoring is done to affix cargo to the ULD and adapt different form factors of cargo items to maximize the use of the available ULD volume.

  7. Ditch Witch - Wikipedia

    en.wikipedia.org/wiki/Ditch_Witch

    Ditch Witch, a trade name of Charles Machine Works, is an American brand of underground utility construction equipment, principally trenchers, which has been in operation since 1949. It is the leading subsidiary of Charles Machine Works, headquartered in Perry, Oklahoma .

  8. Tunnel construction - Wikipedia

    en.wikipedia.org/wiki/Tunnel_construction

    Tunnel Construction. Tunnels are dug in types of materials varying from soft clay to hard rock. The method of tunnel construction depends on such factors as the ground conditions, the ground water conditions, the length and diameter of the tunnel drive, the depth of the tunnel, the logistics of supporting the tunnel excavation, the final use and shape of the tunnel and appropriate risk management.

  9. Category:Geotechnical shoring structures - Wikipedia

    en.wikipedia.org/wiki/Category:Geotechnical...

    Trench shoring This page was last edited on 24 June 2022, at 12:07 (UTC). Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional ...

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