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Ice auger with offset brace handle. Augers have long been used for drilling through ice for ice fishing. Augers can be rotated by hand, using a mechanism such as a T handle or a brace bit, or by attaching them to powered hand drills. [70] Scientific uses for non-coring augers include sensor installation and determining ice thickness.
Earth auger with two blades instead of screw. Another type of earth auger has two vertical blades instead of a helical screw. Rather than scraping the soil at the bottom of the hole, this type of auger cuts a cylindrical plug out of it, that is held by friction between the two blades. The auger must then be pulled out and emptied every foot or so.
A design for ice core augers was patented in 1932 and they have changed little since. An auger is essentially a cylinder with helical metal ribs (known as flights) wrapped around the outside, at the lower end of which are cutting blades. Hand augers can be rotated by a T handle or a brace handle, and some can be attached to handheld electric ...
Agassiz's demonstration of the great difficulty of drilling deep holes in glacier ice discouraged other researchers from further efforts in this direction. [12] It was decades before further advances were made in the field, [12] but two patents, the first ice-drilling related ones to be issued, were registered in the United States in the late 19th century: in 1873, W.A. Clark received a patent ...
Inuit goggles made from caribou antler with caribou sinew for a strap Inuit snow goggles from Alaska.Made from carved wood, 1880–1890 (top) and Caribou antler 1000–1800 (bottom)
Community of igluit (Illustration from Charles Francis Hall's Arctic Researches and Life Among the Esquimaux, 1865). An igloo (Inuit languages: iglu, [1] Inuktitut syllabics ᐃᒡᓗ (plural: igluit ᐃᒡᓗᐃᑦ)), also known as a snow house or snow hut, is a type of shelter built of suitable snow.
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