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The Big history of North America encompasses the past developments of people populating the continent of North America. While it was commonly accepted that the continent first became inhabited by humans when individuals migrated across the Bering Sea 40,000 to 17,000 years ago, [ 1 ] more recent discoveries may have pushed those estimates back ...
Human history. In the history of the Americas, the pre-Columbian era, also known as the pre-contact era, spans from the initial peopling of the Americas in the Upper Paleolithic to the onset of European colonization, which began with Christopher Columbus 's voyage in 1492. This era encompasses the history of Indigenous cultures prior to ...
Detonator crimping pliers, cap crimping pliers or detonator crimping tool is a common tool when working with explosives. The construction is very similar to the construction of any other multi-tool or pliers. The specific feature is the presence of one groove on each of the opposing jaws. When the jaws are open, the groves will appear as a semi ...
Crimp (joining) Crimp tool for 0.14 mm 2 to 10 mm 2 (26–8 AWG) insulated and non-insulated ferrules. Crimping is a method of joining two or more pieces of metal or other ductile material by deforming one or both of them to hold the other. The bend or deformity is called the crimp. [1][2] Crimping tools are used to create crimps.
Clovis culture. The Clovis culture is an archaeological culture from the Paleoindian period of North America, spanning around 13,050 to 12,750 years Before Present (BP). [ 1 ] The type site is Blackwater Draw locality No. 1 near Clovis, New Mexico, where stone tools were found alongside the remains of Columbian mammoths in 1929. [ 2 ]
A Folsom projectile point. Folsom points are projectile points associated with the Folsom tradition of North America.The style of tool-making was named after the Folsom site located in Folsom, New Mexico, where the first sample was found in 1908 by George McJunkin within the bone structure of an extinct bison, Bison antiquus, an animal hunted by the Folsom people. [1]