| Company | Mountain Province Diamonds Inc. |
| Date | 2019-12-31 |
| Region | Northwest Territories, Canada |
| Commodities | Diamonds |
| Mine Type | Open Pit |
| Throughput | 3.23 – 3.35 Mtpa |
| Mine Life | 2014 – 2030 |
| Status | Operating |
Executive Summary
This NI 43-101 Technical Report, prepared by JDS Energy & Mining Inc. for Mountain Province Diamonds Inc. and De Beers Group, provides an update to the mineral resources and mineral reserves at the Gahcho Kué Mine as of December 31, 2019. The mine is operated through the Gahcho Kué Joint Venture (GKJV) and is located in the Northwest Territories, Canada. The report details the geological setting of the kimberlite pipes (5034, Hearne, and Tuzo), the mining methods employed, and the processing plant capabilities.
The mineral resource estimate includes indicated and inferred categories, with a total of 15.8 million tonnes containing 22.1 million carats. Mineral reserves are classified as probable, totaling 33.0 million tonnes containing 53.0 million carats. The processing plant treats kimberlite ore via crushing, screening, dense media separation, and x-ray sorting to produce a diamond-rich concentrate.
The mine is currently in the operating phase, with production commencing in 2016 and expected to continue until mid-2030. Infrastructure includes an all-weather airstrip and winter road access due to the remote northern location. Environmental and socioeconomic agreements are in place with the Government of the Northwest Territories and Indigenous groups.
Reports
Processing Profile
Website: https://www.mountainprovince.com/
Report Date: 2019-12-31
Region: Northwest Territories, Canada
Project Status: Operating
Commodity: Diamonds
Throughput: 3.23 – 3.35 Mtpa
Mine Life: 2014 – 2030
Mine Type: Open Pit
Ore type:
Technical report and processing history
The following archived source profiles have been consolidated here to preserve the project’s processing history and study context.
Gahcho Kué Mine — 2018 Technical Report
Gahcho Kué Mine — 2018 Technical Report
| Company | De Beers |
| Date | 2018 |
| Region | Northwest Territories, Canada |
| Commodities | Diamonds |
Executive Summary
This NI 43-101 Technical Report details the recovery methods and processing facilities for the Gahcho Kué Mine, a diamond operation located in the Northwest Territories, Canada. The mine extracts kimberlite ore from four distinct pipes (5034, Hearne, Tuzo, and Wilson) and processes it through a plant designed for 3.6 Mt/a throughput. Commercial production commenced in Q1 2017, with ongoing improvements aimed at maximizing plant capacity and efficiency.
The processing plant utilizes a combination of crushing, screening, dense media separation (DMS), and X-ray sorting to recover diamonds in the 1.1 to 28 mm size range. The ore is treated via HPGR and cone crushing, followed by DMS modules using FeSi medium. The resulting diamond-rich concentrate is sent to Yellowknife for final cleaning and valuation. Tailings are managed as Coarse Processed Kimberlite (CPK) and Fine Processed Kimberlite (FPK), with specific containment strategies for each stream to ensure environmental compliance.
Reports
- entities/Gahcho_Kue_Mine
Website: https://www.debeersgroup.com/our-business/exploration-and-mining
Report Date: 2018
Region: Northwest Territories, Canada
Project Status:
Commodity: Diamonds
Throughput:
Mine Life:
Mine Type:
Ore type:
Gahcho Kué Mine Technical Report
Gahcho Kué Mine Technical Report
| Company | Mountain Province Diamonds Inc. (49%), De Beers Group (51%) |
| Date | 2017 |
| Commodities | Diamonds |
| Mine Type | Open Pit |
| Status | Operating |
Executive Summary
The Gahcho Kué Mine is a diamond mine located at Kennady Lake, approximately 300 km east-northeast of Yellowknife in the Northwest Territories, Canada. The mine extracts kimberlite resources from three different deposits: 5034, Hearne, and Tuzo. The mine commenced commissioning in September 2016 and declared commercial production in March 2017. The mine is operated through the Gahcho Kué Joint Venture (GKJV) agreement between Mountain Province Diamonds Inc. (49%) and De Beers Group of Companies (51%). The processing plant targets recovery of liberated diamonds in the 1 to 28 mm size range and is designed for efficient diamond recovery over the plant’s 12-year life. The mine expects approximately 550 permanent jobs during the 12-year operational phase.
Key Details
- Location: Kennady Lake, Northwest Territories, Canada (63°26.16N, 109°12.05W)
- Mine Life: 12 years
- Annual Ore Treatment: ~3.1 Mt per year
- Deposits: 5034, Hearne, Tuzo kimberlite pipes
- Processing: Crushing, screening, dense media separation (DMS), x-ray sorting
- Recovery Size Range: 1 to 28 mm diamonds
Reports
Website: https://www.debeersgroup.com/our-business/exploration-and-mining
Report Date: 2017
Region:
Project Status: Operating
Commodity: Diamonds
Throughput:
Mine Life:
Mine Type: Open Pit
Ore type:
