• iron
  • the authors found that there is about 50 kg of above-ground copper for every person on earth, and more than two tons of iron per capita. (wikipedia.org)
  • deposits
  • Norilsk is located between the West Siberian Plain and Central Siberian Plateau at the foot of the 1,700-meter (5,600 ft) high Putoran Mountains, on some of the largest nickel deposits on Earth. (wikipedia.org)
  • The open-pit mining of porphyry copper deposits was adopted worldwide. (wikipedia.org)
  • The copper deposits occur in rocks of Precambrian age, in a thick sequence of northwest-dipping sandstones, conglomerates, ash beds, and flood basalts associated with the Keweenawan Rift. (wikipedia.org)
  • The native copper deposits originate in fissures, steeply dipping veins or in the amygdaloid top portion of the Portage Lake Lava Series lava tops and conglomerate beds. (wikipedia.org)
  • it is only found in the native copper deposits of the Upper Peninsula of Michigan. (wikipedia.org)
  • The Michigan State Geologist Douglass Houghton (later to become mayor of Detroit) reported on the copper deposits in 1841, which quickly began a rush of prospectors. (wikipedia.org)
  • 1840s
  • Copper mining in the United States has been a major industry since the rise of the northern Michigan copper district in the 1840s. (wikipedia.org)
  • When American prospectors arrived in the 1840s, pieces of copper were found in streams or on the ground. (wikipedia.org)
  • Mining
  • Some cobalt, palladium, and platinum are also present but in insufficient quantities for commercial mining purposes. (wikipedia.org)
  • This work was carried out by Temagami-Lorrain Mining Limited in the Sauvé Lake area and Temagami-Cobalt Mining Company Limited in the Gosselin Lake area. (wikipedia.org)
  • Copper mining activity increased in the early 2000s because of increased price: the price increased from an average of $0.76 per pound for the year 2002, to $3.02 per pound for 2007. (wikipedia.org)
  • A number of byproducts are recovered from American copper mining. (wikipedia.org)
  • Later copper mining used improved gravity-classification machinery, including jigs, vanners, and Wilfley tables. (wikipedia.org)
  • A revolutionary development in American copper mining took place when mining engineer Daniel Cowan Jackling conceived of mining the huge but low-grade copper ore body at Bingham Canyon, Utah, using steam shovels in a big open pit. (wikipedia.org)
  • Anglo American Platinum also obtained an ex parte (without notice) order interdicting two tribal chiefs from interfering with their mining operations and had them arrested on charges of intimidation and trespass. (wikipedia.org)
  • Xinjiang Xinxin Mining Industry Company (SEHK: 3833), or in short form "Xinxin Mining" or "Xinxin", is the second largest electrolyted nickel in Mainland China. (wikipedia.org)
  • While it originated thousands of years earlier, copper mining in Michigan became an important industry in the 19th and early 20th centuries. (wikipedia.org)
  • The Copper Country is highly unusual among copper-mining districts, because copper is predominantly found in the form of pure copper metal (native copper) rather than the copper oxides or copper sulfides that form the copper ore at almost every other copper-mining district. (wikipedia.org)
  • The Eagle Mine is a small, high-grade nickel and copper mine owned by Lundin Mining Corporation. (wikipedia.org)
  • Michigan portal Mining portal Copper mining in Michigan Hard rock mining Pepin, John (April 25, 2010). (wikipedia.org)
  • carbon
  • In one important reaction type a main group organometallic compound of the type RM (R = organic fragment, M = main group centre) reacts with an organic halide of the type R'X with formation of a new carbon-carbon bond in the product R-R' Richard F. Heck, Ei-ichi Negishi and Akira Suzuki were awarded the 2010 Nobel Prize in Chemistry for developing palladium catalyzed cross coupling reactions. (wikipedia.org)
  • For example, in nickel and palladium cross couplings, a zerovalent complex with two vacant sites (or labile ligands) reacts with the carbon halogen bond to form a metal halogen and a metal carbon bond. (wikipedia.org)
  • precious
  • From Dudinka, enriched nickel and copper are transported to Murmansk by sea and, then, to the Monchegorsk enrichment and smelting plant on the Kola Peninsula, while more precious content goes up the river to Krasnoyarsk. (wikipedia.org)
  • group
  • Palladium is robust catalyst and is frequently used due to high functional group tolerance, and low sensitivity of organopalladium compounds towards water and air. (wikipedia.org)
  • Most catalysts use bulky L type ligands such as triphenylphosphine, In depth-reviews have been written for example on cobalt, palladium and nickel mediated reactions and on applications The leaving group X in the organic partner is usually a halogen. (wikipedia.org)
  • concentrate
  • The result is a "nickel-copper concentrate", which is then transported by truck north of the Raglan site to coast at Deception Bay. (wikipedia.org)
  • The rock with less copper was called milling ore, or concentrating ore, and required crushing and separation of ore minerals from the waste rock to produce copper concentrate, which was sent to the smelter. (wikipedia.org)
  • Deposit
  • Sama Resources Inc. is pleased to announce the assay results from 6 holes drilled at the Samapleu Extension 1 nickel-copper Deposit in Côte d'Ivoire, West Africa. (marketwired.com)
  • indigenous
  • The speculators could at least acknowledge these facts rather than pretend that the association of copper with indigenous people doesn't exist. (wikipedia.org)
  • tonnes
  • As of 2014, the US had 35 million tonnes of known remaining reserves of copper, the fifth largest known copper reserves in the world, after Chile, Australia, Peru, and Mexico. (wikipedia.org)
  • miners
  • On 5 October 2012, Anglo American Platinum fired 12,967 striking South African miners. (wikipedia.org)
  • The platinum miners were mainly based in Marikana, the town in which Malema jump started his political party and gained popularity with most of the miners. (wikipedia.org)
  • area
  • Platinum and Palladium in Some Mafic/ultramafic Rocks from the Rabbit Creek Area in the Noatak Quadrangle, Alaska. (cdc.gov)
  • Within the state of Michigan, copper is found almost exclusively in the western portion of the Upper Peninsula, in an area known as the Copper Country. (wikipedia.org)
  • By the time the first European explorers arrived, the area was the home of the Chippewa people, who did not mine copper. (wikipedia.org)
  • high
  • Some authors have suggested that as much as 1.5 billion pounds of copper was extracted during this period, but some archaeologists consider such high figures as "ill-constructed estimates" and that the actual figure is unknown. (wikipedia.org)
  • method
  • In the 1910s and 1920s, copper mills adopted the froth flotation method, which had been developed in Australia. (wikipedia.org)
  • work
  • Native Americans were the first to mine and work the copper of Lake Superior and the Keweenaw Peninsula of northern Michigan between 5000 BCE and 1200 BCE. (wikipedia.org)
  • Archaeological expeditions in the Keweenaw Peninsula and Isle Royale revealed the existence of copper producing pits and hammering stones which were used to work the copper. (wikipedia.org)
  • less
  • The strike, the longest in the history of South Africa, ended in late June 2014 when the mineworkers union signed a 3-year settlement deal with Anglo American Platinum and the other mine owners which saw the lowest paid workers, whose basic salary was less than R12,500, increased by R1,000 ($95) a month for two years, and by R950 per month in the third year. (wikipedia.org)
  • The agreement also ensured no platinum worker would earn less than R8,000 as a basic salary. (wikipedia.org)
  • Michigan
  • This series of lava "is at least 15,000 feet thick in the Michigan copper district" and consists of "several hundred flood basalt flows. (wikipedia.org)
  • rock
  • The rock with higher copper content was smelter ore, also called direct shipping ore, and required no treatment before going to the smelter. (wikipedia.org)
  • primary
  • The mine is located on the Yellow Dog Plains in Michigan's Upper Peninsula (U.S.). Eagle is the only primary nickel mine in the nation. (wikipedia.org)