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Sican tumi, or ceremonial knife, Peru, 850–1500 CE. Metallurgy in pre-Columbian America is the extraction, purification and alloying of metals and metal crafting by Indigenous peoples of the Americas prior to European contact in the late 15th century.
The nation's territory has been marked as an epicentre of oil and gas activity, with extensive industrial presence. Across 73% of the nation's territory, there is at least one road, hydro reservoir, pipeline, or gas well within a 250 metre radius. [4] The construction of the W. A. C. Bennett Dam in the 1960s flooded parts of the nation's territory.
It is an open-pit mine; the equipment there is 100 tonne trucks, large front-end loaders, bulldozers and other necessary support equipment used in the mining operation. The annual production rate is 2.7 million tonnes a year, which comes to about 600,000 carats a year in diamond grade.
North West Company trade gun. Horseback Bison hunt. European demand for fur transformed the economic relations of the Great Plains First Nations from a subsistence economy to an economy largely influenced by market forces, thereby increasing the occurrence of conflicts and war among the Great Plains First Nations as they struggled to control access to natural resources and trade routes. [7]
However, the influx of southern highway construction crews had a devastating effect on some First Nations, who suffered from a large number of deaths from diseases to which they had no immunity. On 1 April 1953, the capital of the territory was moved from Dawson City to Whitehorse. [11] Gold mining operation in Klondike in 2005.
Hearst arranged to haul the mining equipment by wagon from the nearest railhead in Sidney, Nebraska. Arthur De Wint Foote worked as an engineer. [5] Despite the remote location, deep mines were dug and ore began to be produced. An 80-stamp mill was built, and began crushing Homestake ore by July 1878. Share of the Homestake Mining Company ...