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248:(DIAND) took over responsibility for cleaning up the Giant mine site. Miramar Mining Corporation subsequently entered into an arrangement with the government whereby Miramar held the mine operation in care and maintenance, continued underground dewatering operations, and removed the remaining ore from underground for treatment at the nearby Con Mine process facility (1999–2004).
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atmosphere during the roasting process. Arsenic trioxide readily dissolves in water; in 2006 underground flooding around Giant Mine's Mill Pond's underground chamber which contained 16,946 tonnes (16,678 long tons; 18,680 short tons) of arsenic trioxide dust threatened to migrate out of the chamber if it was flooded and dump large amounts of arsenic into
Yellowknife Bay.
341:. The remediation plan proposed by the SRK Consulting Inc. and SENES Consultants Limited, the leading technical advisors since 2000 to Aboriginal Affairs and Northern Development Canada on the Giant Mine Remediation Project, includes underground issues such as dust that contains arsenic trioxide, and remediation of the surface, water and Baker Creek.
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The taxpayer-funded (c. $ 900m to approximately one billion dollars) remediation plan to permanently freeze the underground arsenic trioxide dust chambers was approved by the
Canadian federal government in August 2014. According to the federal civil servant in charge of the clean-up, Jane Amphlett,
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dust, containing up to 60% organic and inorganic arsenic. The dust was a byproduct of extracting gold from the mineral and was collected and stored in sealed underground chambers from 1951 to 1999. Prior to legislated collection and underground storage in 1951 arsenic was released directly into the
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ore stored underground. Their top priority for the Giant Mine site remediation is an "effective, long-term management" of arsenic trioxide. Arsenic trioxide dust, which contains approximately 60% arsenic, is highly lethal even in small doses. It is odourless, tasteless and semi water-soluble. The
352:
reported that the "greatest challenge associated with the remediation of Giant Mine" is the safe long-term storage 237,000 t (233,000 long tons; 261,000 short tons) of the arsenic trioxide dust, the lethal byproduct of extracting gold from the mineral
404:. Additionally, the contamination is the topic of the interactive documentary "Shadow of a Giant" by Saskatchewan filmmaker Clark Ferguson who was artist in residence with Western Arctic Moving Pictures (WAMP) in 2013.
380:(YKDFN) demonstrated outside the site demanding a federal apology, compensation, and a role in the contracts for remediation. They launched their own website which details the story from their point of view.
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ended in 1993, pursuant to an order by the (then) Canada Labour
Relations Board. A civil suit also resulted on behalf of the families of the replacement workers killed in the explosion (
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was discovered on the property and mineral claims staked in 1935 by Johnny Baker, but the true extent of the gold deposits was not known until 1944, when a massive gold-bearing
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The discovery led to a massive post-war staking boom in
Yellowknife. Giant Mine entered production in 1948 and ceased operations in 2004. It produced over 7,000,000
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in 2006, there were 15 sealed underground storage chambers 250 feet below ground containing a total of 237,000 tonnes (233,000 long tons; 261,000 short tons) of deadly
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838:
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using technology like that used in ice-hockey rinks, coolants will permanently freeze the storage chambers containing the arsenic trioxide dust to keep
306:) In 2008, the nine Giant Mine widows lost their $ 10-million civil judgment when the Northwest Territories Supreme Court overturned an earlier ruling.
240:(1948–1986 through subsidiary Giant Yellowknife Mines Limited), Pamour of Australia (1986–1990 through subsidiary Giant Yellowknife Mines Limited), and
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arsenic trioxide dust is stored in 15 stope or rock chambers that have been sealed with concrete approximately 250 feet (76 meters) below the surface.
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Mining operations over five decades have created a massive environmental liability, a problem which the mine's previous owners left to the
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Artist in residence leaves city after almost three-month stint: New local film to be produced from experience
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Palmer, M.J.; Galloway, J.M.; Jamieson, H.E.; Patterson, R.T.; Falck, H.; Kokelj, S.V. (2016).
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709:, SOMBA K'E/Yellowknife, Northwest Territories: Northern News Services, archived from
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680:"Yellowknives Dene demand federal compensation, economic benefits from Giant Mine"
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Regional distribution of arsenic in near-surface soils in the
Yellowknife area
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High Grade Tales: Stories from mining camps of the
Northwest Territories
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to sort out. The site's 950 ha (2,300 acres) footprint includes 8
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The
Operational History of Mines in the Northwest Territories, Canada
205:
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The concentration of arsenic in lake waters of the
Yellowknife area
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Jamieson, H.E.; Maitland, K.M.; Oliver, J.T.; Palmer, M.J. (2017).
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769:
Giant
Yellowknife Mines Ltd. fonds. Northwest Territories Archives
474:, Yellowknife: Northern News Services, p. 1, archived from
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Defunct gold mine in
Northwest Territories, Canada (1948–2004)
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236:(220,000 kg) of gold. Owners of the mine have included
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is envisioned for part of the former Giant Mine townsite.
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seepage out in what is called the "Frozen Block Method."
575:. Yellowknife: Northwest Territories Geological Survey.
555:. Yellowknife: Northwest Territories Geological Survey.
244:(1990–1999). When Royal Oak went bankrupt in 1999 the
284:, 750 ft (230 m) underground, killed nine
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Department of Indian Affairs and Northern Development
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510:, Yellowknife, NWT: The Economist, 27 September 2014
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655:Aboriginal Affairs and Northern Development Canada
625:Aboriginal Affairs and Northern Development Canada
591:Aboriginal Affairs and Northern Development Canada
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350:Aboriginal Affairs and Northern Development Canada
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528:, Yellowknife, Northwest Territories, 27 May 2008
330:, 325,000 m (11,500,000 cu ft) of
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839:Improvised explosive device bombings in Canada
651:"Arsenic Trioxide and the Frozen Block Method"
292:was later convicted of placing the bomb. The
834:Improvised explosive device bombings in 1992
522:"Court overturns award to Giant Mine widows"
489:
452:
414:List of mines in the Northwest Territories
392:and explosion were dramatized in the 1996
268:On September 18, 1992, at the height of a
784:Gold mines in the Northwest Territories
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320:Government of the Northwest Territories
804:Disasters in the Northwest Territories
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465:
748:, Jonathon Gatehouse, 03/17/2003 via
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468:"Disaster brewing at Giant mine site"
251:According to an article published in
703:Garbutt, Nicole (4 December 2013),
507:Canada's Giant Mine: Giant headache
303:Fullowka v. Royal Oak Ventures Inc.
196:, 5 km (3.1 mi) north of
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814:20th-century mass murder in Canada
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14:
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844:1992 in the Northwest Territories
789:Miners' labour disputes in Canada
728:
756:"Giant Mine Remediation Project"
466:Bryant, Mike W. (10 July 2006),
388:The events and aftermath of the
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829:1992 labor disputes and strikes
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657:, 24 July 2013, archived from
593:, 24 July 2013, archived from
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378:Yellowknives Dene First Nation
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1:
621:"Giant Mine Remediation Plan"
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276:ownership, an explosion in a
371:Yellowknife community museum
204:. Giant Mine was within the
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809:Underground mines in Canada
735:"Giant Mine 10 Years Later"
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210:Yellowknife greenstone belt
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799:Mining disasters in Canada
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220:was uncovered beneath the
169:Miramar Mining Corporation
750:The Canadian Encyclopedia
390:Giant Mine labour dispute
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794:1992 disasters in Canada
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824:1992 murders in Canada
115:62.49972°N 114.35861°W
272:during the tenure of
202:Northwest Territories
81:Northwest Territories
587:"Technical Advisors"
445:Silke, Ryan (2012).
432:Silke, Ryan (2009).
316:Government of Canada
224:Baker Creek Valley.
120:62.49972; -114.35861
819:Mass murder in 1992
376:In winter 2020 the
175:Year of acquisition
111: /
21:
746:Maclean's Magazine
740:2017-09-24 at the
449:. Self Published
436:. Self Published
332:contaminated soils
67:Location in Canada
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288:. Mine employee
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759:. Retrieved
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222:drift-filled
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364:groundwater
345:Remediation
198:Yellowknife
118: /
106:114°21′31″W
94:Coordinates
778:Categories
761:2014-02-03
689:2020-12-04
472:News/North
420:References
401:Giant Mine
218:shear zone
186:Giant Mine
136:Discovered
103:62°29′59″N
61:Giant Mine
31:Giant Mine
20:Giant Mine
717:2 October
665:2 October
630:2 October
601:2 October
532:2 October
482:2 October
324:open pits
206:Kam Group
190:gold mine
77:Territory
738:Archived
684:CBC News
526:The Star
408:See also
339:asbestos
253:The Star
37:Location
336:fibrous
298:lockout
280:of the
264:Bombing
228:History
165:Company
131:History
86:Country
294:strike
188:was a
152:Closed
144:Opened
89:Canada
573:(PDF)
553:(PDF)
278:drift
160:Owner
719:2014
667:2014
632:2014
603:2014
534:2014
484:2014
384:Film
326:, 4
318:and
282:mine
214:Gold
184:The
178:1999
155:2004
147:1948
139:1935
394:CBC
234:ozt
780::
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470:,
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369:A
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634:.
296:/
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