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ounces (5,320 kg) of gold, 2,205,000 troy ounces (68,600 kg) of silver, and 20,400 tonnes (45,000,000 lb) of molybdenum. Since Rio Tinto purchased
Kennecott Utah Copper in 1989, it has invested about $ 2 billion in the modernization of KUC’s operations. In 2020, Kennecott Utah Copper directly employed 2,171 people and contributed to more than 14,000 indirect Utah jobs.
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employed at the mine, and additional
Latinos were recruited during the labor shortages of WWII. For many of these men, it marked the beginning of long careers as copper workers. Issues of the company magazine 'Kennescope' in the 1950s emphasized the diversity of the work force. In 1953, there were 20 ethnic backgrounds, from Native American to Japanese.
467:
to clean up historic mining sites. To date, Kennecott Utah Copper has remediated more than 10,000 acres (4,000 ha; 40 km) of the total 40,000 acres (16,000 ha; 160 km) impacted by mining at a cost of more than $ 450 million. KUC has spent more than $ 350 million on the cleanup of
425:
KUC is considering alternatives that will keep the
Bingham Canyon Mine open for additional decades. A massive rock slide at the mine in 2014 did not stop Rio’s plans to extend the mine’s life by another decade to 2029. The company says there’s still as much ore in the ground as miners have taken out
454:
and the implementation of cleanup actions performed by
Kennecott and the Jordan Valley Water Conservancy District to address two groundwater plumes located in southwest Salt Lake County. The plumes were caused by historical mining practices in the Kennecott South Zone. Approximately 80 square miles
471:
Kennecott's copper mine concentrators, power plant and smelter is the leading facility for toxic releases in the state of Utah, according to a 2017 report by the US Environmental
Protection Agency. The company's combined operations are believed to account for 3.5 percent of Salt Lake Valley's air
409:
is the largest man-made excavation in the world. It is one of the top producing copper mines in the world with cumulative production over 17,000,000 tonnes (19,000,000 short tons) of copper. In 2020, Bingham Canyon produced 140,000 tonnes (310,000,000 lb) of copper, along with 171,200 troy
530:
During the copper strike of 1912, Utah Copper
Company brought many Mexican and Mexican American strikebreakers to the Bingham mine. Most of them did not remain after the settlement of the strike. Company records reveal that, by 1918-19, large numbers of Spanish-surnamed individuals began to be
298:
started operation. Utah Copper and Boston
Consolidated merged in 1910. Five years later, in 1915, Kennecott acquired a 25% interest in the company. In 1915, to dilute the cost of railroad construction to support the mines, and to find new ventures for the capital produced by the Alaskan mine,
475:
Environmental groups have lauded Rio Tinto’s decision to drop its requested permit for a new rock crushing plant at the copper mine. Kennecott originally wanted the crusher to shore up a mine-waste pond. Kennecott now says it can keep mining without expanding its tailings impoundment.
518:, the first part of the process, is situated on 4,126 acres (1,670 ha; 16.70 km) in the city of South Jordan where 20,000 homes and up to 14,000,000 square feet (1,300,000 m) of commercial space are planned. Opened in 2009, Daybreak's first commercial center,
348:, innocent bystanders killed in a private revenge. Guay had shipped a timed-explosive device in the luggage of his wife on this flight. When it exploded, she and all the other passengers and crew on the plane were killed. Charles Cox, formerly head of
426:
of
Bingham Canyon since it began production in 1906. The company proposes to expand the mine and reach an additional 700 million tons of ore resource by pushing back the south wall of the Bingham Canyon Mine 1,000 feet and deepening it 300 feet.
337:, Bingham set new world records for copper mining and produced about 30% of the copper used by the Allies. During the war, many women worked for the first time in the mines, mills, and smelters, replacing the men who had gone to war.
264:, Tal Penrose, and Dr. R.A.F. Penrose as investors. MacNeill was named president, Spencer "Speck" Penrose was named secretary-treasurer, and Jackling was named general manager. The company immediately started a pilot mill at
303:
was already actively working copper mines in Chile and Utah. Upon
Kennecott's creation, they merged their Braden Copper Company property in Chile, as well as 25 percent of the Utah Copper Company, into Kennecott.
472:
pollution, according to Utah
Department of Air Quality statistics. Editorialists continue to criticize Kennecott for the amount of lead the smelter puts into the air each year: 6,250 pounds (2,830 kg).
577:
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352:, was hired shortly after to fill the executive vacuum at Kennecott. Guay and his two accomplices, Marguerite Pitre and Généreux Ruest, were all convicted of murder and executed for the bombing.
450:
downgradient of the Bingham Canyon mining operations. Starting in the late 1980s, the State of Utah Natural Resource Damage Trustee has overseen the investigation of mining-influenced
206:
Utah Copper Mine, circa 1925, with a view of Main St. in Bingham Canyon. The Auditor lists the total earnings for the mine. Image from the Salt Lake County Auditor Annual Report, 1928.
344:. They were the retiring president E.T. Stannard; his designated successor, Arthur D. Storke; and R.J. Parker, a vice-president. They were incidental to what became known as the
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397:(RTZ) purchased mining assets from BP. Kennecott Utah Copper Corporation was formed by Rio Tinto in 1989 as a new mining company under the laws of the State of Utah.
455:(210 km) are impacted in the southwest portion of Salt Lake County. Because of the remediation efforts, which include more than a $ 100 million investment in a
349:
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405:
Today, the second-largest copper producer in the US, Kennecott Utah Copper provides about 8% of the US annual copper consumption of 1,700,000 tonnes. Kennecott’s
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Rio Tinto Limited (based in Melbourne) and Rio Tinto PLC (based in London). Although each company trades separately, the two Rio Tintos operate as one business.
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The article was written by Philip F. Notarianni and the Encyclopedia was published by the University of Utah Press. ISBN 9780874804256. Archived from
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each time they drove through it. The EEP recommended further studies to identify and quantify the levels of materials blown from the tailings ponds.
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The article was written by Scott Crump and the Encyclopedia was published by the University of Utah Press. ISBN 9780874804256. Archived from
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and mining engineer Robert C. Gemmell inspected the property and liked the prospects. Both men examined Wall's properties and recommended
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483:'s Environmental Epidemiology Program (EEP) received a report from a concerned citizen stating that berm dust from the mine's
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Kennecott Copper Corporation was incorporated from the various financial interests involved. By this time, the
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463:(EPA) National Priorities List (NPL). This investment represents one of many remediation projects along the
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in 1887. He acquired claims to the land and started underground mining. In the mid-1890s, metallurgist
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Another Rio Tinto-owned company manages the non-mining land and water assets previously owned by KUC,
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facility, Kennecott's South End, (location of the contaminated aquifer) was removed from the
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514:. Kennecott Land was established by Rio Tinto in April 2001 to develop surplus mining land.
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On September 9, 1949 three Kennecott company officers were killed in an airplane bombing in
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By 1961, Kennecott's copper mines in the United States included four large open pits in
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Kennecott laid off 200 workers in March 2016 due to a fall in global commodity prices.
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378:(SOHIO) acquired Kennecott. Production was interrupted from 1985 to 1987. In 1986,
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330:'s line. In 1936, Kennecott acquired all the assets of the Utah Copper Company.
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1141:"Moench: Legislature dawdles while our children absorb lead and other toxins"
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1111:"Air quality advocates: Utah should rethink Kennecott rock crushing plant"
789:"Bingham Canyon mine is the largest man-made excavation on earth. - Image"
367:. As the mine in Utah expanded, it subsumed the land on which the City of
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Rio Tinto Group, one of the world's largest mining operations, comprises
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311:, the world's largest underground copper mine, located in the Chilean
252:
Jackling and Wall formed the Utah Copper Company on 4 June 1903, with
190:. The current corporation was formed in 1989. The mine and associated
1410:", 8 photos, 4 measured drawings, 1 photo caption page
907:"Rio Tinto's Kennecott wins clean air lawsuit in the US | MINING.com"
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Utah Copper Company, Magna Concentrator, Magna, Salt Lake County, UT
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35:
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383:
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570:"Kennecott landslide impacts global copper industry, Utah economy"
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acquired SOHIO, and Kennecott became part of BP Minerals America.
307:
These actions resulted in Kennecott taking possession of Braden's
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356:
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historic mining waste and $ 100 million on groundwater cleanup.
315:. Founded by William Braden and E.W. Nash of New York City, the
379:
364:
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and Thomas Weir formed the Boston Consolidated Mining Company.
229:
deposits in Bingham Canyon, 15 miles (24 km) southwest of
226:
175:
152:
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had its start when Enos Andrew Wall realized the potential of
966:"Five-Year Review Report Kennecott North Zone Superfund Site"
312:
1367:
853:"Annual Report 2020 – Production, Reserves & Operations"
234:
1090:"EPA report details toxic releases for US, Utah | KSL.com"
279:
was formed in Alaska, named after explorer and naturalist
522:, contains a boutique, restaurants, hair salon and more.
602:
387:
1373:
Australian Science at Work entry for Rio Tinto Limited
275:, the first digging began in 1906. The same year, the
1491:
Former components of the Dow Jones Industrial Average
371:
was built, and the city was disincorporated in 1971.
326:
opened in 1911 to transport local ore, replacing the
1486:
Non-renewable resource companies established in 1898
1357:
on November 3, 2022 and retrieved on April 12, 2024.
1339:
on December 3, 2023 and retrieved on April 13, 2024.
186:, Utah. The company was first formed in 1898 as the
631:Cononelos, Louis J.; Notarianni, Philip F. (1994),
630:
163:company. Its corporate headquarters are located in
60:. Unsourced material may be challenged and removed.
374:In 1981, after a worldwide fall in copper prices,
1447:
1171:"Kennecott Scraps Permit, Cuts Added Pollution"
858:. Rio Tinto. 22 February 2021. pp. 339–340
607:. The University of Utah Press. pp. 38–39.
438:Kennecott tailings dam near the Great Salt Lake
214:Kennecott Utah Copper's Garfield Smelter, with
887:. South Jordan, UT: Rio Tinto. 4 November 2015
881:"Rio Tinto Kennecott reduces local workforce"
461:United States Environmental Protection Agency
1461:Historic American Engineering Record in Utah
811:
809:
291:(ASARCO) to refine the Bingham Canyon ore.
1199:Wu, Alexander; Dietrich, Craig J. (2012).
1198:
1060:"Bingham Canyon rebuilds after landslide"
806:
733:"Five largest copper mines in US in 2020"
120:Learn how and when to remove this message
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27:Major copper mining and refining company
1201:Berm Dust from Kennecott Retaining Pond
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14:
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1263:"Latinos at the Kennecott Copper Mine"
289:American Smelting and Refining Company
1466:Mining companies of the United States
1168:
1109:Tribune, Brian Maffly The Salt Lake.
1070:from the original on 17 November 2015
946:from the original on 17 November 2015
875:
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817:"2011 Sustainable Development Report"
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1471:Rio Tinto (corporation) subsidiaries
1404:Historic American Engineering Record
1399:Marriott Library Special Collections
1386:Marriott Library Special Collections
1213:from the original on August 14, 2022
1002:"Utah Dept of Environmental Quality"
973:U.S. Environmental Protection Agency
758:Flanagan, Daniel M. (January 2021).
386:in Arizona from Kennecott. In 1987,
58:adding citations to reliable sources
29:
1243:from the original on 4 January 2014
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680:. Salt Lake City, UT. 2 July 2003.
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24:
1456:Copper mining in the United States
1395:University of Utah Digital Library
1382:University of Utah Digital Library
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1293:"Kennecott laying off 200 workers"
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319:had started mining there in 1906.
194:produce 1% of the world's copper.
188:Boston Consolidated Mining Company
25:
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826:. Rio Tinto. 2012. Archived from
791:. Mining Technology. 2011-06-15.
420:
294:In 1907, the Utah Copper mill in
603:Charles Caldwell Hawley (2014).
283:. A smelter was also started at
34:
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1181:from the original on 2016-02-02
1169:Fahys, Judy (22 October 2015).
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1151:from the original on 2016-04-30
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1121:from the original on 2016-05-07
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1040:from the original on 2012-04-12
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1008:from the original on 8 May 2016
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795:from the original on 2013-11-02
714:from the original on 2019-10-19
684:from the original on 7 May 2017
678:Utah Division of State Archives
580:from the original on 2016-02-22
45:needs additional citations for
1058:Els, Frik (11 November 2014).
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328:Denver and Rio Grande Railroad
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1:
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400:
1378:Kennecott Corporation Papers
641:, University of Utah Press,
324:Bingham and Garfield Railway
7:
1481:1898 establishments in Utah
767:Mineral Commodity Summaries
739:. London. 21 September 2021
708:Copper Area News Publishers
537:
10:
1507:
197:
1349:Utah History Encyclopedia
1331:Utah History Encyclopedia
638:Utah History Encyclopedia
481:Utah Department of Health
444:groundwater contamination
167:. Kennecott operates the
141:Kennecott Utah Copper LLC
1406:(HAER) No. UT-24, "
769:. U.S. Geological Survey
674:"City of Bingham Canyon"
1476:Companies based in Utah
1391:Kennecott Miner Records
1028:"Kennecott's South End"
633:"Kennecott Corporation"
350:Carnegie-Illinois Steel
277:Kennecott Mines Company
69:"Kennecott Utah Copper"
1233:"Crossing at Daybreak"
512:Kennecott Land Company
439:
301:Guggenheim Exploration
273:Guggenheim Exploration
219:
207:
178:mines in the world in
137:
136:Bingham Canyon in 1942
1145:The Salt Lake Tribune
1115:The Salt Lake Tribune
940:Kennecott Utah Copper
885:Kennecott Utah Copper
824:Kennecott Utah Copper
479:In January 2012, the
437:
415:dual-listed companies
317:Braden Copper Company
213:
205:
171:, one of the largest
135:
1432:40.5473°N 112.0035°W
1267:historytogo.utah.gov
833:on 19 September 2015
704:"Ray mining history"
655:on December 10, 2023
430:Environmental impact
376:Standard Oil of Ohio
271:With financing from
256:, Charles MacNeill,
54:improve this article
1428: /
544:Bingham Canyon Mine
407:Bingham Canyon Mine
254:Charles L. Tutt Sr.
223:Utah Copper Company
169:Bingham Canyon Mine
1437:40.5473; -112.0035
516:Daybreak Community
440:
346:Albert Guay Affair
239:Daniel C. Jackling
220:
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165:South Jordan, Utah
138:
1368:Kennecott website
1033:. Kennecott.com.
737:Mining Technology
605:A Kennecott Story
490:was blowing onto
488:evaporation ponds
465:Oquirrh Mountains
388:British Petroleum
218:in the foreground
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184:Salt Lake County
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1423:112°00′13″W
1217:January 30,
1074:16 November
950:16 November
837:16 November
500:sore throat
452:groundwater
309:El Teniente
245:. In 1898,
1450:Categories
1420:40°32′50″N
1307:2016-03-06
1277:2016-04-22
1206:(Report).
1185:2016-04-23
1155:2016-04-23
1125:2016-04-22
1095:2017-05-20
1064:Mining.com
1044:2013-09-16
921:2017-06-04
911:MINING.com
799:2013-09-16
718:2019-10-19
584:2016-02-14
555:References
401:Operations
361:New Mexico
80:newspapers
1247:3 January
862:3 January
773:3 January
743:3 January
659:April 13,
393:In 1989,
266:Copperton
110:July 2013
1301:Archived
1271:Archived
1241:Archived
1208:Archived
1179:Archived
1175:kuer.org
1149:Archived
1119:Archived
1068:Archived
1035:Archived
1012:21 April
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977:Archived
975:. 2014.
944:Archived
915:Archived
891:21 March
793:Archived
760:"Copper"
712:Archived
682:Archived
578:Archived
538:See also
520:SoDa Row
384:Ray mine
173:open-pit
161:refining
157:smelting
1342:(1994)
1324:(1994)
496:malaise
485:tailing
448:aquifer
357:Arizona
333:During
287:by the
198:History
192:smelter
151:, is a
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365:Nevada
363:, and
342:Quebec
227:copper
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159:, and
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