La sous-province de l'Abitibi s'étend de Timmins, en Ontario, à Val d’Or, au Québec, et recèle des dépôts d'or présumés, dérivés de processus magmatiques ou métamorphiques. Les plus importants gîtes aurifères se sont précipités à des paléotempératures et paléopressions caractéristiques d'une profondeur de 8 à 12 km sous terre. L'écoulement – pendant la période de […]

Les méthodes de recouvrements et/ou amendement organiques sont privilégiés pour limiter l’oxygène ou l’eau d’atteindre les résidus réactifs et de générer du drainage minier acide (DMA) ou de drainage neutre contaminé (DNC). Ils permettent de valoriser des matériaux peu coûteux et disponibles à proximités des parcs à résidus ainsi que de favoriser la revégétation. Toutefois, […]

La mine Éléonore est une mine souterraine en cours d’exploitation par Goldcorp Inc. (Baie James, Québec). Cette dernière produit d’importantes quantités de résidus miniers filtrés, en partie stockés en surface dans des parcs à résidus. L’érosion éolienne est un phénomène naturel entrainant le déplacement de particules, fines et grossières, et donc la perte de sol […]

The Abitibi Sub-province extends from Timmins, ON to Val d’Or, QC and contains gold deposits with equivocal genesis, derived from either magmatic or metamorphic processes. The largest of the gold lode deposits precipitated at paleotemperatures and paleopressures indicative of depths 8-12 km below the surface. Metal-rich fluid flow at these depths through structurally deformed rocks […]

Jason Duff, who is completing MSc program at the University of Ottawa, recently found evidence for sedimentary rocks in the North Caribou greenstone belt that are 2680 million years old, younger than other rocks in the belt. The rocks elsewhere in the belt contain 3.0 billion year sedimentary and volcanic rocks including the host rocks […]

Goldcorp recently announced a new initiative referred to as H2zero with the goal of reducing water usage in their mining operations by 80 to 100%. Mineral processing and specifically comminution and mineral separation are the main consumers of water. This research focuses on dry comminution technologies and represents a first step towards advancing dry comminution […]

One of the most challenging issues in the gold mining industry comes from the carbonaceous ore components adsorbing gold ion complexes, resulting in up to 90% gold loss during cyanide leaching process. The addition of chemical reagents as blinding agents is one of the most promising methods to blind the organic carbon content of ore […]

The research program is aimed at developing novel test procedures and models for High Pressure Grinding Rolls (HPGRs) for comminution of metal ores classified by geology and physical properties. The HPGR is an energy efficient technology and there are presently no accepted small scale tests for sizing the technology for large scale operations. The study […]

Cyanide is a chemical used in the dissolution of gold. It is highly toxic and environmentally unfriendly but cheap and highly efficient. In Canada, more than 90% of the gold mines uses cyanide in its operation, however, the toxicity of cyanide after some serious cyanide accidents has raised the alarm for consideration of an alternative […]

Between government obligation and corporate social responsibilities, mining companies are experiencing a need to maintain positive corporate-Indigenous relations as they develop and implement impact benefit agreements in ‘consultation’ with First Nations.. Specifically the research will answer the following question(s): Does Indigenous cultural competency and safety training help to: a) foster a work place environment that […]

The boreal forest is an essential breeding ground for hundreds of North America’s bird species, yet it is poorly studied. Many of these birds are rapidly declining, including a group of birds called the aerial insectivores. These birds are not necessarily related to each other, but instead they share a behaviour: they all catch insects […]

This research focuses on novel sensor-based algorithms for sorting rocks and categorizing them as good (valuable) and bad (worthless) rocks. The sensors in the sorter will “see” the rocks characteristics, whether it’s their color or atomic density or the desired element and send a command to a mechanical arm, for example, to separate the two […]