The complex legacy of arsenic contamination surrounding Giant Mine derives in large part from the roasting of arsenopyrite ore, a process that released approximately 20,000 tonnes of arsenic trioxide from the Giant roaster stack, and spread aerially to the surrounding environment, 86% of which occurred during the first 14 years of operations ...
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The Giant Mine was a large gold mine located at Yellowknife, Northwest Territories. Gold was discovered on the property in 1935 by Johnny Baker, but the true extent of the gold deposits were not known until 1944 when a massive goldbearing shear zone was uncovered beneath the driftfilled Baker Creek Valley. The discovery led to a massive postwar staking boom in Yellowknife. Giant Mine ...
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The case of the Giant mine illustrates how a large, longlived Au mine has resulted in a complex regional legacy of As contamination and an estimated remediation cost of almost one billion Canadian dollars (AANDC 2012). The mine, located a few km north of the city of Yellowknife on the shore of Great Slave Lake (Figs. 1, 2) produced more than 7 million troy ounces of Au (approximately 220 ...
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This license was isaued to Giant Yellowknife Mines Limited by the Northwest Territories Water Board on April Ol,1987 for the purpose of licensing the industrial use of water in mining, milling and associated uses at the Giant mine in Yellowknife. This license is scheduled to expire on April 30,1993.
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The Giant Mine was a gold mine located on the Ingraham Trail, 5 km ( mi) north of Yellowknife, Northwest Territories. Giant Mine was within the Kam Group, a part of the Yellowknife greenstone belt.
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Arsenic (As) concentrations in lake sediments in the Yellowknife region, Northwest Territories, Canada, are elevated from the weathering of mineralized bedrock and/or from the aerial deposition of arsenic trioxide (As 2 O 3) generated via the roasting of arsenical gold ores at the nowdefunct Giant Mine and other historical roasting operations in the area.
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The issue was brought up at the Giant Mine Remediation Project's annual public forum in Yellowknife on Wednesday and a city council meeting on Monday. At the public forum, Andrei Torianski, the project's socioeconomic manager, shared metrics on northern and Indigenous employment. Since 2017, he said Indigenous employees have worked on ...
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The Giant Mine was a gold mine located on the Ingraham Trail, 5 km ( mi) north of Yellowknife, Northwest Territories. Giant Mine is within the Kam Group, which is part of the Yellowknife greenstone belt. ... to legislated collection and underground storage in 1951 arsenic was released directly into the atmosphere during the roasting process ...
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Arsenic and Gold Mining in the Yellowknife Bay Area In 1936 the Canadian mining giant Consolidated Mining and Smelting Company (CMS, later Cominco) staked claims along the shores of Yellowknife Bay and opened Con Mine in 1938. One year later, Negus Mines Ltd. opened its namesake mine next to the Con Property. After a lengthy period
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DOI: / Corpus ID: ; Arsenic mobility and characterization in lakes impacted by gold ore roasting, Yellowknife, NWT, Canada. article{VanDenBerghe2018ArsenicMA, title={Arsenic mobility and characterization in lakes impacted by gold ore roasting, Yellowknife, NWT, Canada.}, author={Martin Van Den Berghe and Heather E. Jamieson and Michael J. Palmer}, journal ...
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His tenpage report detailed how the industrial roasting process that separated gold from rock had created a dangerous byproduct: arsenic trioxide, a colourless, odourless powder known for centuries as a poison. Though the roasting at both mines was similar, each handled the toxic results differently.
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Abstract: More than 237,000 metric tonnes of arsenic trioxide roaster waste dusts have been stored underground in the abandoned Giant Mine (Yellowknife, NWT). This waste arsenic trioxide material is approximately 60% arsenic, which is hazardous to both people and the environment.
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Giant Mine Milling and Roasting Process, Yellowknife, NWT A Historical Summary by Ryan Silke, historical consultant ... The mineral claims that became the Giant Mine were staked early in the history of the
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. INAC is focused on accelerating the remediation of contaminated sites in the North to protect the health and safety of Aboriginal people, Northerners, and the integrity of the environment. The Giant Mine Remediation Project will cleanup the surface, stabilize and secure the underground and maintain and monitor for health safety.
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The Giant Mine, located in Yellowknife, Northwest Territories, Canada has been operating as a gold mine since 1948. Giant has been primarily an underground operation which used roaster technology to remove of gold from refractory arsenopyrite ore. The roasting process produced arsenic trioxide bearing dust as a waste product. This dust was
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The Giant Mine, located in Yellowknife, Northwest Territories, Canada has been operating as a gold mine since 1948. Giant has been primarily an underground operation which used roaster technology to remove of gold from refractory arsenopyrite ore. The roasting process produced arsenic trioxide bearing dust as a waste product.
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Giant Mine (Northwest Territories). These lakes are marked by differing limnological characteristics such ... Mine derives in large part from the roasting of arsenopyrite ore, a process that released approximately 20,000 tonnes of arsenic ... This phasewas found in Giant Mine tailings, Yellowknife Bay sediments (Great Slave Lake) as well as
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[Giant Yellowknife Mines Ltd. Milling Flow Sheet showing the ore milling process including crushing, grinding, flotation and tails ... Northwest Territories Archives. Quick search ; File N: 266 Giant Yellowknife Mines Ltd. Milling Flow Sheet. Giant Yellowknife Mines Ltd. fonds; Giant Yellowknife Mines Ltd. Giant Yellowknife Mines ...
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To release the gold found in minerals called arsenopyrite ore, Giant Mine and other legacy mining operations around Yellowknife had to roast the ore at extremely high temperatures. Unfortunately, this roasting process also released arsenic rich gas, a highly toxic by product.
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Gold mines in the Yellowknife, NT, regionin particular, the Giant Mineoperated from 194999, releasing 237,000 tonnes of waste arsenic trioxide (As2O3) dust, among other compounds, from gold ore extraction and roasting processes. For the first time, we show the geospatial distribution of roaster .
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Gold mines in the Yellowknife, NT, regionin particular, the Giant Mineoperated from 194999, releasing 237,000 tonnes of waste arsenic trioxide (As2O3) dust, among other compounds, from gold ore ...
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The toxic arsenic trioxide stored underground at Yellowknife's Giant Mine remediation site is considered lowrisk as a wildfire approaches the city, officials say. Giant Mine is a former gold mine that operated for decades at the city's northern perimeter before being shut down in the early 2000s.
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That's according to Ed Sangris, chief of Dettah,, who says the Yellowknives Dene First Nation (YKDFN) are expecting the process for an apology from the federal government, for the harms...
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Figure : Giant mine, the three study lakes and the city of Yellowknife, NT. The ore at Giant mine was mainly refractory, and required the roasting of arsenopyrite prior to cyanidation, a process that leads to the formation of arsenic trioxide, one of the most toxic forms of arsenic solid (Bromstad Jamieson, 2012). While the bulk of arsenic aerosols (mainly arsenic trioxide) ever produced ...
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Pursuit of gold in central NWT during the 20 th century resulted in development of two largescale mines: Consolidated Mining and Smelting Company (Con Mine;opened 1938) and Giant Yellowknife Gold ...
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Research conducted at the Giant Mine, a former gold mine in Yellowknife, NWT, Canada (Fig. 1) offered an opportunity to compare the geochemical behavior of As and Sb because both elements are elevated in mine waste and in the surrounding environment. Ore was roasted at Giant to extract gold, resulting in a complex range of solid As and Sb ...
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Yellowknife, Northwest Territories, has been shown as a hotspot of arsenic due to geological presence of arsenopyrite and proximity to past mining operations, particularly Giant Mine (Jamieson ...
WhatsApp: +86 18838072829![[Giant Mine] NWT Archives](/gf78xuj/385.jpg)
CREDIT: NWT Archives/Giant Yellowknife Mines Ltd. fonds/N: 0108. Send comments or additional information on this item. Item N: 0108 [Giant Mine] ... Giant Mine, 1200 Tons/Day. [Aerial view of Giant Mine.] Notes area. Physical condition. Arrangement. Language of material. Script of material.
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The Commissioner's Lands Act proclaims surface land transfers to the NWT, including Giant Mine site. 1967. An improved tailings effluent treatment circuit is commissioned. ... 1958. The mill processing rate increases to 1,000 tonnes per day. The Dracco baghouse facility is constructed to collect arsenic trioxide dust ... Giant Yellowknife Gold ...
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Remediating the mine, which is on Yellowknife's doorstep, involves freezing 237,000 tonnes of toxic arsenic trioxide dust a byproduct of the gold roasting process in chambers beneath the mine, alongside a range of other activities associated with cleaning the site to the highest standard possible. Advertisement. Advertisement.
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A material supplier from Belgium would like to produce limestone powder for his custome...
India is rich in various mineral resources and it is an important mineral processing market
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