Red Chris Mine
Client: Newcrest Mining Ltd.
Year: 2019 – Current
Red Chris Mine, operated by New Crest Red Chris Joint Venture (Newcrest) is a copper and gold mine that started production in 2015. The mine located in northwest British Columbia 80 km south of Dease Lake, BC. In the fall of 2019 and in a very short period Pelly choreographed the mobilization of an extensive fleet of personnel and large-scale mining equipment to the mine. This included 80 personnel and 90 loads of equipment. Initial work included upgrading the haul roads in the tailings area and developing borrow sources. Most of the work focused on raising a dam within a tight timeline. Currently, Pelly and Tahltan Nation Development Corporation are poised to complete the structural fills of the dams during the 2020 construction season. The work involves an estimated 1,655,600 m3 of strategic fill placement required to sustain ongoing site operation and concentration production. All work at the mine is done in the framework of a collaboration agreement with the Tahltan Nation Development Corporation.
Client: Parsons (for CIRNAC)
Year: 2019 – Current
The project involved the construction of a 1.9-km diversion channel for Rose Creek at the Faro Mine Complex. The project was designed to prevent leached metals originating at the complex from threatening the downstream environment. Previous to this project, Pelly completed a temporary diversion channel, also for Parsons.
The scope of work included the establishment of road networks and drainage controls, as well as borrow development, aggregate production, and upgrades and modification to existing mine infrastructure. In addition, work included clearing, grubbing, excavation, permafrost excavation, drilling and blasting, engineered fill construction, supply and installation of BGM liner, and water management controls.
Parsons, the Interim Construction Manager, oversees the work on behalf of the Government of Canada.
Eagle Gold Mine
Client: Victoria Gold Corporation
Year: 2018 – 2019
Pelly carried out site development work for Victoria Gold Corporation at the Eagle Gold Project near the community of Mayo in the central Yukon approximately 480 km north of Whitehorse. This project illustrates Pelly’s ability to adjust to unforeseen geotechnical variations and significant quantity adjustments and still meet the owner’s schedule and quality requirements.
Work included preparing a heap leach pad and construction of a major containment embankment, control pond, site for the gold recovery plant, clearing, and a crusher and ore storage site. The work required large quantities of rock requiring Pelly to operate a large drilling and blasting campaign. Since the site was mountainous and extremely wet, having surface and subsurface drainage systems in place were vital. An extensive piping system for pregnant leachate was placed on top of a multi-layer liner. The site’s Water Management Plan (WMP) required silt fencing around all work areas. The WMP has many controls in place, including swales, pumps, diversions, finger drains, exfiltration sumps, lateral drains, ditches, and seepage chain. Pelly worked closely with site engineers on a daily basis to ensure numerous quality control systems were followed.
Client: Minto Explorations Ltd.
Year: 1996 – 2002: Intermittent site development
Year: 2006 – 2018: Continual mining
Pelly worked with Minto Explorations Ltd. in central Yukon for 22 years on this long-term project.
Site development work included construction of a 43-km access road, rerouting of a large watercourse, and flood control measures. Pelly also built a 1,400-metre airstrip and multiple laydown areas. Minto Mine is inaccessible by road for months at a time, during the freeze-up and break-up of the Yukon River, so careful planning and forecasting were essential.
Pelly upgraded the access road and completed the infrastructure development. This included the rough cuts necessary for future camp and mill footprints and the building of a water retention dam in a steep and narrow valley, and an embankment to contain ice-rich overburden.
The site evolved into an operating mine, and Pelly was awarded the contract to mine the main deposit. Pelly drilled, blasted, loaded, hauled and placed large quantities of materials while exercising strict quality control. The average daily target was 12,000 m3 per day, 365 days per year. Ongoing site works entailed construction, maintenance and expansion of all site access roads, dry-stack tailings, stockpile and crusher feed, drainage construction and annual ice bridge construction and maintenance across the Yukon River. A total of four pits were developed and three pushbacks.
Safety was a cornerstone of this project. During the mining phase, there were several years were Pelly did not experience a single reportable incident.
Pelly worked closely with the Selkirk First Nation and the Selkirk Development Corporation for several years during work at the site.
Faro Mine Remediation – Grum Waste Sulphide Cell Remediation Project
Client: Government of Yukon
Year: 2010 – 2011
In spring 2010 Pelly was awarded public tender by Government of Yukon to remediate the Grum Waste Sulphide Dump at the Faro Mine Complex near Faro, YT. This project was the first large reclamation project at the Faro Mine site and involved hauling and placing 1.5 million m3 of various materials.
Approximately 30 hectares of the Grum waste rock pile contains highly sulphidic material, and the remediation plan to prevent water contamination involved sloping the entire area and installing an impervious layer of welded HDPE liner over the entire slope. The HDPE membrane was then covered with till overburden materials, then hydro-seeded.