10 record(s) found with the tag "mining impacts" (multi-year projects are grouped):
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Toxic Effects of Chronic Arsenicosis in Muskrats and Squirrels from Yellowknife
Principal Investigator: Amuno, Solomon A
Licenced Year(s): 2017
Summary: The objectives of this research project are to: 1. investigate the effects of chronic arsenic exposure on reproductive parameters, specifically seminal and hormonal parameters including testicular pathology and os penis (baculum) morphology of small mammals (muskrats and squirrels) inhabiting the vicinity of the Yellowknife area, near the Giant mine, and in a reference location approximately 30-8...

Oxidative Stress, DNA Damage and Bone Metabolism Disruption in Small Mammal Populations Exposed to Arsenic and Heavy Metals in Yellowknife, NWT: A Preliminary Study
Principal Investigator: Amuno, Solomon A
Licenced Year(s): 2016
Summary: The first objective of this preliminary study is to monitor in selected small mammal population, specifically the snowshoe hare population the effects of metal exposure on oxidative stress parameters as well as metalothionenin gene expression and genotoxicity (DNA damage and mutation induction). The second is to monitor effect of metal exposure on bone microstructure alterations, including biomark...

The presence and persistence of arsenic trioxide in soils around Giant Mine, NWT
Principal Investigator: Bromstad, Mackenzie J
Licenced Year(s): 2010
Summary: The objective of this project is to understand why arsenic trioxide (As3+) is still present in soils around Giant Mine, how long it will remain there, and if the set of circumstances leading to persistent As3+-rich soil may apply to any other places previously assumed to be As3+-free. In terms of current mine remediation, future human contact with the site, and ecosystem health, it needs to be und...

Mobility and Speciation of Antimony and Arsenic in the Aqueous Environment around the Giant Mine, Yellowknife, NWT
Principal Investigator: Fawcett, Skya
Licenced Year(s): 2007 2006 2005
Summary: The purpose of this project is to study the mobility, speciation, and mineralogical and geochemical controls on antimony (Sb) and arsenic (As) originating from the Giant Mine. This research could aid in designing reclamation plans, resolving the relation between Sb and benthic diversity and identifying threats to the Great Slave Lake ecosystem. Understanding the movement and speciation of As and S...

Sediment Investigation of Baker Creek Giant Mine, Yellowknife, NT
Principal Investigator: Barnette, Laura M
Licenced Year(s): 2005
Summary: The objective of the study is to: determine the spatial extent of sediments enriched by tailings solids; characterize the physical and geochemical characteristics of contaminated sediments in Baker Creek; determine to what extent arsenic and other elements of concern in these materials can be remobilized into the water column. Given the shallow water depth in Baker Creek, the majority of sedime...

Investigation of the Extent of Historic Tailings in Back Bay/Yellowknife Bay
Principal Investigator: Caughill, Dave
Licenced Year(s): 2004
Summary: Between 1948 and 1951, approximately 375 000 tons of tailings were deposited directly into Back Bay from Giant Mine along the northwest shore via a drainage channel. The submerged tailings contain high levels of metals, particularly arsenic. Over time, t...

Arsenic Speciation in Fish for Back Bay, Yellowknife, and Consequences for Human Health
Principal Investigator: de Rosemond, Simone
Licenced Year(s): 2003
Summary: The Giant Mine, Yellowknife, was in operation for more than 50 years during which time arsenic levels in the surrounding area have significantly increased due to the roasting methods used to extract gold from mined ore. Arsenic was measured in walleye (...

Ecological Investigation at the Giant Mine
Principal Investigator: d'Entremont, Marc
Licenced Year(s): 2003
Summary: In preparation of DIAND's detailed Arsenic Trioxide Management Project Description, an assessment of the current environmental conditions at and around the Giant Mine site and an assessment of the potential environmental impacts associated with implement...

The Potential for Geochemical and Microbial Remobilization of Arsenic from Sediments in Yellowknife Bay, Great Slave Lake
Principal Investigator: Andrade, Claudio
Licenced Year(s): 2003
Summary: The overall goal is to provide data on arsenic cycling in sub-aqueous sediments to better understand the potential environmental impacts within Yellowknife Bay and the long-term fate of arsenic. Important objectives of the project are to assess the stab...

The Reproductive and Developmental Toxicity of Arsenic in Mine Waste Soils on the Earthworm (Eisenia fetida andrei)
Principal Investigator: Wong, Stephen
Licenced Year(s): 2001
Summary: The research team will examine soils which will be collected by DIAND Contaminants Division staff from Yellowknife. Approximately 20 kg of contaminated soil will be collected from a site close to the Con Mine. As well, approximately 80 kg of uncontaminated soil (for use as a reference soil) will be collected from a site adjacent to the Rae Highway. All soils will be returned to a laboratory at ...