Yellowknife gold mine arsenic. Take a tour of Giant Mine

Arsenic mobility and characterization in lakes impacted by gold ore roasting, Yellowknife, NWT,. downwind and within 5 km of the historic mining and roasting operations of Giant Mine (Northwest Territories). These lakes are marked by differing limnological characteristics such as area, depth and organic content. Radiometric age-dating shows that the occurrence of arsenic trioxide in lake.

Meet the Yellowknife Team Fighting 237,000 Tonnes of Arsenic.

Gold production in Yellowknife over a period of 60 years was along 8 kilometres of the YRFZ trend, or approximately 10% of the known fault structure, which includes the high-grade gold mineralization on the Campbell Shear. It remains largely unexplored north and south of the historical mines, on ground now controlled by Gold Terra. Of particular importance, from a series of holes from the.Community perspectives on arsenic pollution at Yellowknife’s Giant Mine Dr. Arn Keeling, Department of Geography Dr. John Sandlos, Department of History Memorial University of Newfoundland Introduction: a mine’s toxic legacy The “Toxic Legacies” project is a community—university research partnership that aims to address the historical and contemporary legacies of environmental.Map of Arsenic Concentrations Measured in Water Bodies in the Yellowknife Area with Corresponding Public Health Advice UPDATED: July 5, 2019 Lakes with green points: Arsenic levels are below Health Canada’s drinking guidelines. It is recommended not to drink untreated water from any lake. However, these lakes are considered safe for swimming and fishing. Lakes with yellow points: Arsenic.

Recovery of gold from arsenopyrite-hosted ore in the Giant Mine camp, Yellowknife, NWT, Canada, has left a legacy of arsenic contamination that poses challenges for mine closure planning. Seepage from underground chambers storing some 237,000 tonnes of arsenic trioxide dust, has As concentrations exceeding 4000 ppm. Other potential sources and sinks of As also exist. Sources and movement of.An oral history and community mapping project on Giant Mine, arsenic poisoning, and the Yellowknives Dene First Nation: the Goyatiko Language Society, will transcribe and translate the mining-related source material for inclusion in an illustrated oral history that documents the impact of gold mining and arsenic on the Yellowknife’s Dene First Nation (YKDFN). Goyatiko will also produce a.

Gold Mining and Arsenic The effects of arsenic pollution from Giant Mine were severe. Almost all of the gold ore at Giant Mine was contained in arse- nopyrite formations, which meant it had to be roasted at high temperatures to sep-arate the gold from the surrounding rock. One byproduct of ore roasting was arse-nic trioxide dust (the most toxic form of arsenic, which billowed up from the.

Anthropogenic emissions include arsenic trioxide (As 2 O 3), which is one of the most bioaccessible and toxic forms of arsenic (Meunier et al., 2010, Plumlee and Morman, 2011), and can be found in mine wastes across the world, particularly in mine sites that extracted gold through ore roasting, as well as soils affected by arsenic-based herbicides and pesticides (Fitzmaurice et al., 2009.

Giant Mine Remediation Project - Health Effects Monitoring Program. The Health Effects Monitoring Program will establish current (baseline) levels of arsenic and other contaminants of concern in people's bodies before the cleanup starts. Then, during remediation, the participants will provide samples again. Their new results will be compared to the baseline results.

If there is a golden lining in this cloud of arsenic dust it is that the studies, remediation work and monitoring create jobs in Yellowknife, now largely a government town. “That mine is still.

Remediation Project. Giant Mine is located in Yellowknife, Northwest Territories (NWT) about five kilometres north of the city centre (see Figure 1.1.1). The mine produced gold from 1948 until 1999, and ore for off-site processing from 2000 until 2004. After the owner of the mine.

Elevated levels of arsenic (As) and antimony (Sb) in water and sediments are legacy residues found downstream from gold-mining activities at the Giant Mine in Yellowknife, Northwest Territories.

Monitoring legacy arsenic in the Yellowknife area.

The decision to freeze about 237,000 tonnes of toxic arsenic trioxide dust underground at the former Giant Mine in Yellowknife remains the chosen solution for now — and possibly for the next 100.

The gold roasting process that produced seven million ounces of gold began in the 1940s at the city’s Giant gold mine, and was discontinued in 2004. The gold deposits were contained in arsenopyrite mineral formations, necessitating the separation of gold from arsenic, leaving 237,000-260,000 tonnes of highly toxic, water soluble arsenic trioxide dust, stored in 15 underground chambers a few.

Arsenic contamination persists in Yellowknife lake a decade after gold mine shut: study Levon Sevunts, Radio Canada International Posted: Wednesday, August 24, 2016 at 19:30 — Last Updated.

The characterization, mobility, and persistence of roaster.

Meet the Yellowknife Team Fighting 237,000 Tonnes of Arsenic.

Gold mine left high levels of toxic arsenic in NWT lakes.

Monitoring legacy arsenic in the Yellowknife area.