Kakula Copper Mine's Northern and Southern Access Tunnels Successfully Connected
Kakula's high-grade core now open for immediate development, where the average grade is projected to exceed 8% copper
Kolwezi, Democratic Republic of Congo--(Newsfile Corp. - November 11, 2020) - Ivanhoe Mines (TSX: IVN) (OTCQX: IVPAF) Co-Chairs Robert Friedland and Yufeng "Miles" Sun today announced a major milestone in the development of the tier one Kamoa-Kakula Copper Project in the Democratic Republic of Congo (DRC), with the initial joining of the main northern and southern access tunnels at the Kakula Copper Mine ─ the first of multiple, high grade, underground copper mines to be developed on the project's 400-square-kilometre mining licence.
The Kakula Mine is being developed on the eastern portion of the Kakula Deposit ─ representing less than half of the overall 13.3-kilometre-long (8.3-miles) deposit. The main access tunnels (drives) between the northern and southern declines at the Kakula Mine were connected (holed) in the high-grade core of the deposit, where the average grade is projected to exceed 8% copper.
This week's holing has opened up the first two high grade, drift-and-fill mining blocks totalling 10.6 million tonnes at an average grade of 6.78% copper (5.7 million tonnes @ 7.04% copper and 4.9 million tonnes @ 6.48% copper) near the centre of the deposit (see Figure 1).
"Now that we have initiated development of Kakula's first two high-grade ore blocks, it is important to note that these two areas alone contain more than 700,000 tonnes of in-situ copper, and approximately 600,000 tonnes of recoverable copper," said Mr. Friedland. "With copper trading at approximately US$7,000 a tonne, the saleable value of the copper concentrate produced from these initial two blocks exceeds the estimated capital cost to develop both the first and second phases of production at Kamoa-Kakula. This is the true definition of a tier one mine."
"The tunneling work completed to join Kakula's northern and southern declines is comparable to driving a major tunnel ─ large enough to drive city buses through ─ from the east side to the west side of the island of Manhattan in New York," Mr. Friedland added.
The Kakula Mine is expected to have a mine life of approximately 21 years, while the western portion of the Kakula Deposit - Kakula West - is scheduled to be Kamoa-Kakula's third underground mine to be developed and have a mine life of approximately 16 years.
"The holing is a major achievement and milestone for the project team and our underground mining crews. It opens up the mine's footprint for ventilation and, more importantly, marks our entry into high-grade ore from both sides of the deposit," said Mark Farren, Kamoa Copper's CEO.
"We have moved quickly to open up these high-grade reserves at the core of the Kakula Deposit. We now will complete the ledging work and prepare the drift-and-fill mining areas for production so that we can feed the concentrator plant with high-grade ore directly from underground when the plant starts operations in July 2021."
"The holing was spot on and we are very pleased with the result. Ventilation has always been a key factor in determining how many underground mining crews can work at the same time. Air now is flowing freely between the northern and southern declines - a distance of more than four kilometres - allowing us to add additional mining crews in the high-grade drift-and-fill blocks as we require them. Each block in the central portions contains up to seven million tonnes of high-grade ore," Mr. Farren added.
Underground development from the southern decline was performed by mining crews from JMMC, the DRC subsidiary of leading Chinese mining contractor JCHX, while development from the northern decline was performed by Kamoa Copper's mining crews.
Marna Cloete, Ivanhoe Mines' President and CFO (right), celebrates Kakula's first holing with Jan Strydom, Kamoa Copper's Managerial Leader: Operations (left). Mr. Strydom and his mining crews were instrumental in the successful connection of the main access drives from the northern and southern declines.
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Watch a short, time-lapse video of the drilling and blasting process for the holing event: https://vimeo.com/477672587/67ed1b4d74
Members of Kamoa-Kakula's team of talented Congolese celebrate the holing.
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(Left to right) Olivier Binyingo, Ivanhoe Mines' VP Public Affairs for DRC; Ben Munanga, General Manager, Ivanhoe Mines Energy DRC; Christelle Nday, Admin Office Manager; Lydia Makong, Geologist; Pontien Kalala, Section Manager; Magloire Kashiba, Production Manager; Micheline Kyenge, Geologist; Louis Watum, General Manager Kipushi Project; Didier Masengo, Senior Mine Geologist; Franck Twite, Senior Geology Superintendent; and Numbi Kabale, Ivanhoe Financial Reporting.
Second holing expected by June 2021, opening up 26 million tonnes of ore to feed the initial 3.8-Mtpa concentrator plant
The second set of connection drives is expected to hole by June 2021, opening up an additional high-grade and medium-grade mining block. The width of the initial planned mining blocks of the Kakula orebody measures 1,475 metres, of which 880 metres is in the +5% and +8% copper grade contours (see Figure 1). When the second holing is achieved, ore available for mining will increase to approximately 26 million tonnes.
Phase 1 copper concentrate production from the Kakula Mine is scheduled to begin in July 2021. Kakula is projected to be the world's highest-grade major copper mine, with an initial mining rate of 3.8 million tonnes per annum (Mtpa) at an estimated average feed grade of more than 6.0% copper over the first five years of operation.
Phases 1 and 2 combined are forecast to produce up to 427,000 tonnes of copper per year. Based on independent benchmarking, the project's phased expansion scenario to 19 Mtpa would position Kamoa-Kakula as the world's second-largest copper mining complex, with peak annual copper production of more than 800,000 tonnes.
A recent, independent audit of Kamoa-Kakula's greenhouse gas intensity metrics performed by Hatch Ltd. of Mississauga, Canada, confirmed that the project will be among the world's lowest greenhouse gas emitters per unit of copper produced.
"After more than 25 years of exploration and development, we are now less than nine months away from unveiling the world's next truly great copper mine. After hitting one milestone after another, we are now down to the short strokes before we welcome government representatives, institutional investors, and analysts from the world's leading banks to the mine's grand opening," said Mr. Friedland.
Kakula average grade of 6.2% copper over the initial five years of operations; combined Kakula-Kansoko average grade of 4.5% copper over a 37-year mine life
In September 2020, Ivanhoe announced the findings of an independent pre-feasibility study (PFS) for the project's Phase 2, 7.6-Mtpa operation that evaluates the development of mining activities at both the Kakula Mine, initially at a rate of 3.8 Mtpa and ramping up to 6.0 Mtpa; and the Kansoko Mine, initially at a rate of 1.6 Mtpa to fill the expanded, Phase 2, 7.6-Mtpa concentrator plant at Kakula and ramping up to 6 Mtpa as the reserves at Kakula are depleted.
A few key results for the Kakula-Kansoko 2020 PFS:
- Kakula-Kansoko benefits from an ultra-high feed grade averaging 6.2% copper over the first five years of operations, and 4.5% copper on average over a 37-year mine life.
- An average annual production rate of 331,000 tonnes of copper at a mine-site cash cost of US$0.55 per pound (lb) of copper and total cash cost of US$1.23/lb copper for the first 10 years of operations, and annual copper production of up to 427,000 tonnes by year four. Kakula is expected to produce a very-high-grade copper concentrate of approximately 57% copper, with extremely low arsenic levels.
The mining method for the Kakula Deposit primarily is drift-and-fill using paste backfill; with the exception of a room-and-pillar area close to the northern declines, which will be mined in the early years of production. The paste backfill system will utilize a paste plant located on surface connected to a distribution system that includes a surface pipe network connected to bore holes located at each connection drive on the northern side of the orebody. Approximately 99% of the deposit will be mined using drift-and-fill, which was chosen to maximize the extraction of high-grade Kakula ore.
Figure 1: The successful holing has opened up the first two high grade, drift-and-fill mining blocks shown in purple (5.7 million tonnes @ 7.04% copper) and grey (4.9 million tonnes @ 6.48% copper) shown below.
To view an enhanced version of Figure 1, please visit:
Note: Tonnes and grades for the central high-grade blocks represent a 7-metre 'best cut' horizon within the Mineral Resource model with a basal contact referenced to 1 metre above the bottom contact of the basal siltstone. Tonnes and grade for the medium-grade northern and southern blocks represent a 6-metre 'best cut' horizon within the Mineral Resource model with a basal contact referenced to 1 metre above the bottom contact of the basal siltstone. Grade contours are modelled based on the 6-metre-high best cut.
Figure 2: The 13.3-kilometre Kakula Deposit overlain on Manhattan to provide a sense of size of the deposit.
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Figure 3: The 13.3-kilometre Kakula Deposit overlain on London.
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Figure 4: The 13.3-kilometre Kakula Deposit overlain on Beijing.
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The Kamoa-Kakula Copper Project is a joint venture between Ivanhoe Mines (39.6%), Zijin Mining Group (39.6%), Crystal River Global Limited (0.8%) and the DRC government (20%).
Two 220-kilovolt (kV) transformers arriving at the Kakula Mine site earlier this week. Each weighing 85 tonnes, the transformers are the last major pieces of equipment for the Phase 1, 3.8-Mtpa operation. They are being installed at the Kakula Mine substation to receive clean, sustainable hydroelectricity from the national grid.
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Watch a short, time-lapse video of the arrival and installation of the transformers at the Kakula Mine substation: https://vimeo.com/477680792/5567936d3f
About Ivanhoe Mines
Ivanhoe Mines is a Canadian mining company focused on advancing its three principal joint-venture projects in Southern Africa: the development of major new, mechanized, underground mines at the Kamoa-Kakula copper discoveries in the DRC and at the Platreef palladium-platinum-nickel-copper-rhodium-gold discovery in South Africa; and the extensive redevelopment and upgrading of the historic Kipushi zinc-copper-germanium-silver mine, also in the DRC. Kamoa-Kakula is expected to begin producing copper in July 2021 and, through phased expansions, is positioned to become one of the world's largest copper producers. Kamoa-Kakula and Kipushi will be powered by clean, renewable hydroelectricity and will be among the world's lowest greenhouse gas emitters per unit of metal produced. Ivanhoe also is exploring for new copper discoveries on its wholly-owned Western Foreland exploration licences in the DRC, near the Kamoa-Kakula Project.
Disclosures of a scientific or technical nature regarding development scenarios at the Kamoa-Kakula Project in this news release have been reviewed and approved by Steve Amos, who is considered, by virtue of his education, experience and professional association, a Qualified Person under the terms of NI 43-101. Mr. Amos is not considered independent under NI 43-101 as he is the Head of the Kamoa Project. Mr. Amos has verified the technical data disclosed in this news release.
Other disclosures of a scientific or technical nature in this news release have been reviewed and approved by George Gilchrist, who is considered, by virtue of his education, experience and professional association, a Qualified Person under the terms of NI 43-101. Mr. Gilchrist is not considered independent under NI 43-101 as he is the Vice President, Resources of Ivanhoe Mines. Mr. Gilchrist has verified the other technical data disclosed in this news release.
Ivanhoe has prepared an independent, NI 43-101-compliant technical report for the Kamoa-Kakula Project, which is available on the company's website and under the company's SEDAR profile at www.sedar.com:
- Kamoa-Kakula Integrated Development Plan 2020 dated October 13, 2020, prepared by OreWin Pty Ltd., China Nerin Engineering Co., Ltd., DRA Global, Epoch Resources, Golder Associates Africa, KGHM Cuprum R&D Centre Ltd., Outotec Oyj, Paterson and Cooke, Stantec Consulting International LLC, SRK Consulting Inc., and Wood plc.
The technical report includes relevant information regarding the assumptions, parameters and methods of the mineral resource estimates on the Kamoa-Kakula Project cited in this news release, as well as information regarding data verification, exploration procedures and other matters relevant to the scientific and technical disclosure contained in this news release.
Investors: Bill Trenaman +1.604.331.9834 / Media: Matthew Keevil +1.604.558.1034
Certain statements in this release constitute "forward-looking statements" or "forward-looking information" within the meaning of applicable securities laws. Such statements and information involve known and unknown risks, uncertainties and other factors that may cause the actual results, performance or achievements of the company, its projects, or industry results, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements or information. Such statements can be identified by the use of words such as "may", "would", "could", "will", "intend", "expect", "believe", "plan", "anticipate", "estimate", "scheduled", "forecast", "predict" and other similar terminology, or state that certain actions, events or results "may", "could", "would", "might" or "will" be taken, occur or be achieved. These statements reflect the company's current expectations regarding future events, performance and results and speak only as of the date of this release.
Such statements include without limitation, the timing and results of: (i) statements regarding the average grade is projected to exceed 8% copper in the high-grade centre of the deposit; (ii) statements regarding Phase 1 copper production from the Kakula Mine is scheduled to begin in July 2021; (iii) statements regarding Kakula is projected to be the world's highest-grade major copper mine, with an initial mining rate of 3.8 million tonnes per annum (Mtpa) at an estimated average feed grade of more than 6.0% copper over the first five years of operation; (iv) statements regarding Phases 1 and 2 combined are forecast to produce up to 427,000 tonnes of copper per year; (v) statements regarding based on independent benchmarking, the project's phased expansion scenario to 19 Mtpa would position Kamoa-Kakula as the world's second-largest copper mining complex, with peak annual copper production of more than 800,000 tonnes; (vi) statements regarding the project will be among the world's lowest greenhouse gas emitters per unit of copper produced; (vii) statements regarding Kakula-Kansoko benefits from an ultra-high feed grade averaging 6.2% copper over the first five years of operations, and 4.5% copper on average over a 37-year mine life; (viii) statements regarding Kakula-Kansoko is expected to have an average annual production rate of 331,000 tonnes of copper at a mine-site cash cost of US$0.55/lb copper and total cash cost of US$1.23/lb copper for the first 10 years of operations, and annual copper production of up to 427,000 tonnes by year four; and (ix) statements regarding Kakula West is scheduled to be the third mine developed at Kamoa-Kakula and have a mine life of approximately 16 years; (x)statements regarding Kakula is expected to produce a very-high-grade copper concentrate of approximately 57% copper, with extremely low arsenic levels; and (xi) statements regarding with copper trading at approximately US$7,000 a tonne, the saleable value of the copper concentrate produced from Kakula's initial two mining blocks exceeds the estimated capital cost to develop both the first and second phases of production at Kamoa-Kakula.
As well, all of the results of the Kakula definitive feasibility study, the Kakula-Kansoko pre-feasibility study and the Kamoa-Kakula preliminary economic assessment, constitute forward-looking statements or information, and include future estimates of internal rates of return, net present value, future production, estimates of cash cost, proposed mining plans and methods, mine life estimates, cash flow forecasts, metal recoveries, estimates of capital and operating costs and the size and timing of phased development of the projects. Furthermore, with respect to this specific forward-looking information concerning the development of the Kamoa-Kakula Project, the company has based its assumptions and analysis on certain factors that are inherently uncertain. Uncertainties include: (i) the adequacy of infrastructure; (ii) geological characteristics; (iii) metallurgical characteristics of the mineralization; (iv) the ability to develop adequate processing capacity; (v) the price of copper; (vi) the availability of equipment and facilities necessary to complete development; (vii) the cost of consumables and mining and processing equipment; (viii) unforeseen technological and engineering problems; (ix) accidents or acts of sabotage or terrorism; (x) currency fluctuations; (xi) changes in regulations; (xii) the compliance by joint venture partners with terms of agreements; (xiii) the availability and productivity of skilled labour; (xiv) the regulation of the mining industry by various governmental agencies; (xv) the ability to raise sufficient capital to develop such projects; (xiv) changes in project scope or design; and (xv) political factors.
Forward-looking statements and information involve significant risks and uncertainties, should not be read as guarantees of future performance or results and will not necessarily be accurate indicators of whether or not such results will be achieved. A number of factors could cause actual results to differ materially from the results discussed in the forward-looking statements or information, including, but not limited to, the factors discussed below and under "Risk Factors", and elsewhere in this release, as well as unexpected changes in laws, rules or regulations, or their enforcement by applicable authorities; the failure of parties to contracts with the company to perform as agreed; social or labour unrest; changes in commodity prices; and the failure of exploration programs or studies to deliver anticipated results or results that would justify and support continued exploration, studies, development or operations.
Although the forward-looking statements contained in this release are based upon what management of the company believes are reasonable assumptions, the company cannot assure investors that actual results will be consistent with these forward-looking statements. These forward-looking statements are made as of the date of this release and are expressly qualified in their entirety by this cautionary statement. Subject to applicable securities laws, the company does not assume any obligation to update or revise the forward-looking statements contained herein to reflect events or circumstances occurring after the date of this release.
The company's actual results could differ materially from those anticipated in these forward-looking statements as a result of the factors set forth below in the "Risk Factors" section in the company's Q3 2020 MD&A and its current annual information form.
To view the source version of this press release, please visit https://www.newsfilecorp.com/release/67957