Search results
Results from the WOW.Com Content Network
Tunga penetrans. (Linnaeus, 1758) Tunga penetrans is a species of flea also known as the jigger, jigger flea, chigoe, chigo, chigoe flea, chigo flea, nigua, sand flea, or burrowing flea. It is a parasitic insect found in most tropical and sub-tropical climates. In its parasitic phase it has significant impact on its hosts, which include humans ...
Kola Superdeep Borehole. The Kola Superdeep Borehole SG-3 (Russian: Кольская сверхглубокая скважина СГ-3, romanized: Kol'skaya sverkhglubokaya skvazhina SG-3) is the deepest human-made hole on Earth, which attained maximum true vertical depth of 12,262 metres (40,230 ft; 7.619 mi) in 1989. [1] It is the result of ...
At first the allies began digging saps without any precautions. After a series of explosions caused by counter mine action the allies increased the depth of the tunnels but began to meet rocky ground and the underground war had to return to higher levels. During the siege Russian sappers dug 6.8 kilometres (4.2 mi) of saps and counter mines.
Tungiasis. Tungiasis is an inflammatory skin disease caused by infection with the female ectoparasitic Tunga penetrans, a flea also known as the chigoe, chigo, chigoe flea, chigo flea, jigger, nigua, sand flea, or burrowing flea (and not to be confused with the chigger, a different arthropod). The flea and the disease that it causes are found ...
The Caspian expeditions of the Rus' were military raids undertaken by the Rus' between the late 9th century [a] and c. 1041 on the Caspian Sea shores, [a] of what are nowadays Iran, Dagestan, and Azerbaijan. Initially, the Rus' appeared in Serkland in the 9th century travelling as merchants along the Volga trade route, selling furs, honey, and ...
Trombiculidae (/ trɒmbɪˈkjuːlɪdiː /), commonly referred to in North America as chiggers and in Britain as harvest mites, but also known as berry bugs, bush-mites, red bugs or scrub-itch mites, are a family of mites. [3] Chiggers are often confused with jiggers – a type of flea. Several species of Trombiculidae in their larva stage bite ...
Hydraulic jigger. A hydraulic jigger is a hydraulically-powered mechanical winch. From the mid-19th century, hydraulic power became available throughout the increasingly modern dockyards and warehouses. This was generated centrally and distributed by pipework, either around a dock estate, or across a city by the new hydraulic power networks.
Digging bar. A digging bar is a long, straight metal bar used for various purposes, including as a post hole digger, to break up or loosen hard or compacted materials such as soil, rock, concrete and ice or as a lever to move objects. Known by other names depending on locale, structural features and intended purpose such as a hop bar or crowbar ...