Plateau Energy Metals

Enabling the New Energy Paradigm

This Plateau Energy profile is part of a paid investor education campaign.*


Plateau Energy Metals Inc. (TSXV:PLU,OTCQB:PLUUF) (“Plateau”), a Canadian-Peruvian clean energy metals development and exploration company, is a leader in the new energy paradigm with its Falchani lithium chemical project and its Macusani uranium project. The company, with mineral concessions in southeastern Peru, covering approximately 930 square kilometers, discovered and delineated the world’s sixth-largest hard rock lithium resource, putting Peru on the lithium development world map. The company controls all reported uranium resources published in Peru, all of which are situated near infrastructure. To date, the company has only explored a fraction of its land package.

plateau energy metals concessions

While Plateau started exploring for uranium in 2006, in November 2017 the company uncovered the Falchani lithium chemical project, which has presented a large volcanic tuff hard rock deposit with high-grade values of lithium. Extensive metallurgical test work completed to-date demonstrates that the lithium-rich volcanic material at Falchani can be processed using conventional processing methods (tank leach) and can produce a low impurity battery quality lithium chemical. On February 4, 2020, the company released its preliminary economic assessment (PEA) led by DRA Global which demonstrates Falchani is capable of growing to become one of the largest single asset lithium chemical projects that exists today, together with a low operating cost, flexible lithium chemical processing route, high economic returns (US$1.55 billion NPV of 8 percent and 19.7 percent IRR after-tax) and potential for future by-products. With the newly uncovered lithium project, Plateau plans to take advantage of a rapidly growing lithium market.

Plateau’s plans for its Macusani uranium project are to continue working with the Peruvian government’s implementation of the new regulations for safe transport and export which are anticipated for the second half of 2020, according to government sources. The Macusani uranium project is located approximately 25 kilometers from the Falchani lithium project and is a PEA-stage, low-cost, high-return uranium project with over a US$600 million NPV (8 percent) and +40 percent IRR after-tax.

Plateau Energy’s Company Highlights

  • 100-percent control of a 930-square-kilometer land package in stable jurisdiction of Peru’s Macusani plateau
    • Excellent infrastructure (highway, water, power and labor)
    • In a very supportive mining jurisdiction
  • Active exploration of both lithium and uranium in the land package
  • Falchani lithium chemical project
    • Scalable, long mine life battery quality lithium chemical project in Peru. Production of approximately 63,000 tonnes per annum (“tpa”) average over 33 years of battery-grade lithium carbonate (“Li2CO3”) growing to 85,000 tpa Li2CO3 at a steady-state throughput of 6.0 million tpa
    • After-tax NPV(8 percent) US$1.55 billion at US$12,000/t Li2CO3; after-tax IRR of 19.7 percent
    • Low 2nd quartile operating costs. Benchmark Minerals Intelligence (“BMI”), the leading market data provider for the lithium-ion battery industry, rates Falchani Project in the low 2nd quartile of operating costs at US$3,958 per tonne Li2CO3
    • Green mining initiatives. Development plan incorporates multiple responsible mining methods
  • Macusani uranium project
    • A large well-defined uranium resource in an emerging uranium district
    • Robust PEA economics: High return with an IRR over 40 percent and rapid payback of ~1.8 years (after-tax)
    • Low capex of ~$300 million or ~$5/lb U3O8 of production life of mine
    • Ability to fast track development to feasibility with a scalable, flexible growth plan

Key Projects

Plateau’s Falchani lithium and Macusani uranium projects are situated approximately 25 kilometers apart, within contiguous mineral claims that cover approximately 95 percent of the Macusani Plateau. Hosting all of the published lithium and uranium resources in Peru, the projects are situated approximately 650 kilometers southeast of Lima and have access to labor, water, inexpensive hydro-electric power and major transportation routes and ports. Just to the east of the property is the Interoceanic Highway which links the projects to Pacific and Atlantic ports. The San Gaban hydro generation station is approximately 40 kilometers, as the crow flies (88 kilometers via the highway) to the north and high voltage power lines run adjacent to the project area.

plateau energy metals key projects

Falchani Lithium Project

This new high-grade lithium deposit rapidly advanced from discovery in November 2017 to maiden resource mid-2018. Plateau released an updated resource for the project in March 2019 and after months of detailed test work and engineering analysis completed a PEA in February 2020.

“In just over two years, from grassroots discovery to the PEA, we’ve achieved a great deal and brought forward an exciting, and we think disruptive, new lithium chemical project that we believe will be well-positioned to help meet the world’s increasing shift to electric mobility and battery storage,” said Plateau CEO Alex Holmes.

Preliminary Economic Assessment for Falchani

Base Case Key Highlights

plateau energy falchani pea highlights

  1. After-tax, average annual at steady-state throughput of 6mtpa, based on a selling price of $12,000/t Li2CO3.
  2. See news release for OPEX breakdown
  3. See news release for CAPEX breakdown.
  4. Steady State – battery-grade Li2CO3.

Key Project Attributes

  • Scaled approach to development allows the project to grow with market demand
  • Battery-grade, low-impurity lithium chemical allows complete onsite production, maximizing the company and Peru’s share of the value chain
  • Lithium-rich sulfate process step supports the flexibility to adapt lithium chemical production for industry demand
  • The on-site acid plant provides green power generation and enables low-cost reagent access
  • Inputs sourced largely in Peru support local development while reducing costs and value-added taxes
  • Availability of contract mining reduces CAPEX and provides flexibility during expansion phases
  • A major contributor to economic development in Peru of approximately $2.1 billion LOM capital investment and tax and royalty contributions estimated in excess of $5 billion1
  • Excellent infrastructure near the site to support future Project development and operations
  1. Royalties: approximately $760 million, Workers Participation Tax & Pension Fund: approximately $1.25 billion, Income Tax: approximately $3.75 billion

Mineral Resource Estimates for Falchani

Highlights from the mineral resource estimate, based on a 1,000-ppm lithium cut-off grade, include resources for both the lithium-rich tuft sequence and the wider lithium-rich package including upper and lower breccia units.

The high-grade lithium-rich tuff showed an indicated resource of 0.79 million tonnes of lithium carbonate equivalent with an average grade of 3,500 ppm lithium and an inferred resource of 2.13 million tonnes of lithium carbonate equivalent with an average grade of 3,243 ppm lithium. The wider lithium-rich package, including upper and lower breccia units, displayed an indicated resource of 0.96 million tonnes lithium carbonate equivalent with an average grade of 2,954 ppm lithium and an inferred resource of 3.75 million tonnes of lithium carbonate equivalent with an average grade of 2,706 ppm lithium.

The updated current Mineral Resource estimates from March 1, 2019 are as follows:


Stratum Tonnes (Mt) Density Li (ppm) Li2O (%) Li2O (Mt) LCE (%) LCE (Mt)
UBX 6.23 2.4 1510 0.33 0.02 0.80 0.05
LRT1 7.47 2.4 3709 0.80 0.06 1.97 0.15
LRT2 22.03 2.4  3300 0.71 0.16 1.76 0.39
LRT3 13.03 2.4 3690 0.79 0.10 1.96 0.26
LBX 12.16 2.4 1816 0.39 0.05 0.97 0.12
Total 60.92 2.4 2954 0.64 0.39 1.57 0.96



Stratum Tonnes (Mt) Density Li (ppm) Li2O (%) Li2O (Mt) LCE (%) LCE (Mt)
UBX 13.77 2.4 1730 0.37 0.05 0.92 0.13
LRT1 24.01 2.4 3346 0.72 0.17 1.78 0.43
LRT2 62.30 2.4 3155 0.68 0.42 1.68 1.05
LRT3 37.24 2.4 3324 0.72 0.27 1.77 0.66
LBX 122.75 2.4 2275 0.49 0.60 1.21 1.49
Total 260.07 2.4 2706 0.58 1.52 1.44 3.75


Minor discrepancies due to rounding may occur.

Cut-off 1,000 ppm Li

Tonnes are Metric

Li Conversion Factors as follows: Li:Li2O=2; Li:Li2CO3=2.473

Geological losses of 5% or 10% have been applied, based on geological structure and data density. The average geological loss is 6%.

Ongoing lithium exploration

Since releasing its maiden resource estimate, Plateau continued to explore its Falchani project with a drill program to the west of the initial resource that led to the uncovering of the extensions of the eastern portion of the Falchani deposit at Falchani West and the March 2019 resource update. A number of additional target areas have been identified to the west and the deposit appears open to the west, north and northwest of Falchani West. Exploration results include announcements on September 20, 2018, October 9, 2018, November 19, 2018, January 30, 2019, and June 3, 2019.

Falchani Lithium Project 3D Overview

plateau energy falchani lithium project overview


The process flow sheet (seen below), including plant, equipment and up-front leaching and downstream precipitation was developed by DRA, working with ANSTO Minerals’ (“ANSTO”) laboratories with input from M.Plan International (“M.Plan”). Following mining, mineralized material will be crushed to P80 150 μm, followed by warm (95 °C) sulfuric acid (H2SO4) tank leach processing for a residence time of 24 hours, to extract 89 percent of lithium to leach solution.

The process utilizes conventional up-front tank leaching, widely used in various mining operations to extract metals from mineralized material today. This is followed by a three-stage purification process to reduce various impurities in the leach solution, mechanical evaporation and conventional precipitation, using a crystallization plant, to produce a high purity/low impurity battery grade Lithium Carbonate (Li2CO3) product as demonstrated by test work run by ANSTO that was described in a July 18, 2019, press release. The estimated time from mining to producing a battery-grade end-product is approximately 48 hours. An overall recovery of 80 percent from mineralized material to Li2CO3 is utilized in the PEA.

As a significant portion of the operating costs are derived from sulfuric acid use as the leaching reagent, the PEA includes the construction of a 1,700 tonnes per day (“tpd”) sulfur burning acid plant at site, in P1, to produce, on average, 1,500 tpd of sulfuric acid. In subsequent phases, additional modules are added to meet expanded processing capacity.

Metallurgical Work Program Results:


Tank Leach
High Purity, Battery Grade (>99.50%) 99.74%
Overall Recoveries Li2CO3 77 to 81%
Sulfuric Acid Addition 370 kg/t


Tank Leach Process flowsheet

tank leach process flowsheet

Future Project Opportunities

The PEA identifies several opportunities which may greatly enhance the economics and include:

  • Capital optimization: alternative acid plant and processing plant/equipment sourcing, including evaluating options for “over the fence” acid and power purchase from a third-party operator.
  • Operating cost optimization: long-term contracts for major consumables, reduction in processing consumables and/or costs through process model optimization.
  • Revenue opportunities: further evaluation of additional revenue streams, not included in the PEA, such as SOP fertilizer (K2SO4), caesium sulfate (Cs2SO4) and rubidium sulfate (Rb2SO4).

Preliminary by-product metallurgical test work results were released on April 8, 2020 and examined three different processing options in the work program conducted by ANSTO Minerals, based in Sydney, Australia.

Highlights of the April 2020 By-Product Program:

  • The final test work was run on a sample of Falchani lithium-rich tuff material at the same conditions as the lithium leaching studies published by the company in the PEA with concentrations of 3,400 ppm lithium; 3 wt percent K; 600 ppm Cs and 1,400 ppm Rb;
  • Extractions of the following metals (from lithium-rich tuff into sulfate solution via previous test work and supported in this Program):
    • Potassium (“K”): 43 percent
    • Caesium (“Cs”): 84 percent
    • Rubidium (“Rb”): 67 percent
  • Excellent rejection of aluminum using ‘simple’ neutralization with lime or high-temperature treatment (calcination);
  • Caesium precipitation: selective crystallization of >99 percent of the Cs and Rb from PLS, along with some K, by cooling to between 20 and 30°C (refer to Figure 1 and Table 1) following the PEA flowsheet; and
  • Precipitation of approximately 18 percent of K from leaching of feed material through to PLS at temperatures below 20°C to a purified K-alum in the first pass, with future test work potentially optimizing the yield.

Extraction and Precipitation in Current Program

extraction and precipitation in current program

Macusani Uranium Project

In 2015, Plateau released an updated resource estimate prepared by Mr. David Young, of The Mineral Corporation, for the Macusani uranium project.

At a 75 ppm cut-off the resource estimate is:

macusani resources at 75 ppm

At a 200 ppm cut off the resource estimate is:

macusani resource 200 ppm

The Macusani uranium project, which the company was founded upon, released a resource estimate in 2015 which has measured and indicated resources of 52.9 million pounds of U3O8 at 248 ppm and an inferred resource of 72.1 million pounds of U3O8 at 251 ppm.

Plateau continues to work in the region, moving forward on environmental assessment work, planning optimization work programs, and pending those results, updating the current PEA. Plateau is well-positioned to take advantage of the world’s growing need for cleaner, safer and efficient sources of energy which uranium provides.

2016 Preliminary Economic Assessment

In January 2016, Plateau released an updated PEA, compiled by GBM Minerals, using the 2015 Resource Update. The strong PEA results further validate the merits of the company’s consolidation and organic growth strategy to control all defined uranium resources in Peru.

plateau january 2016 pea summary results

Proposed Mine Plan and Process Design

More than 60 million pounds of production are planned for over 10 years.

The 2016 PEA proposes the construction of a conventional open-pit mining operation with a centralized processing facility operating over a 10-year life with a throughput of approximately 30,000 tonnes per day. Heap leach processing will be used to extract uranium into a weakly acidic aqueous leach solution with uranium recovery through exchange and a solvent extraction acid recovery circuit.

The proposed mine plans include predominantly open-pit mining with underground mining proposed for some of the deeper high-grade portions of the Kihitian complex to be accessed from the pit bottom.

plateau energy macusani uranium project map

Path Forward

Plateau’s plan is to move the Macusani uranium project further along the path to production. The Government of Peru is currently targeting H2 2020 for the implementation of the regulatory framework for transport and export of uranium. Steps for the advancement of the project include:

  • Optimization work programs, and pending positive results, update the PEA
  • Continuing the environmental impact assessment process
  • Generating future exploration targets within and along the known uranium trend and within the larger property package
  • Outlining a fast track to feasibility study upon implementation of the aforementioned regulatory framework

Plateau Energy’s Value Proposition

Plateau’s value proposition is summarized as follows:

plateau energy value proposition

Plateau Energy’s Leadership Team

Alex Holmes – CEO and Director

Alex Holmes has spent over 15 years working in the mining industry. Most recently, he was a partner and co-founder of Oxygen Capital Corp., leading business development activities for all affiliated companies, including True Gold Mining Inc. where he served as VP Business Development and co-founder. He played an instrumental role as part of the senior leadership team from initial asset acquisition in 2013, reserves and resources growth, advancing the project from PEA to feasibility study, through project finance and ultimately gold production in early 2016. Over that period, Mr. Holmes and the team raised in excess of US$215 million to construct and operate True Gold’s Karma mine. Previously, he led the mining teams at two independent Canadian investment banks and raised capital for and advised on transactions for numerous companies.

Dr. Laurence Stefan, M.Sc., Ph.D. — President, COO and Director

Dr. Laurence Stefan is a founder of Plateau Energy Metals and has served as its Managing Director in Peru since October 2007 when the Company went public. He is also the founder of the Colibri Group of Companies, a mineral service company based in Lima, Peru. Dr. Stefan previously worked at Gold Fields of South Africa and JCI (Pty) Ltd. with recent years spent mainly on South American projects. He has been involved in basic and specialized research in uranium metallurgical, recovery and enrichment programs at various gold-uranium mines along the Witwatersrand Basin in South Africa and Namibia.

Philip Gibbs, B.Compt., MBA, CPA, CMA – CFO

Philip Gibbs has extensive knowledge of the financial aspects of exchange-listed mining and mineral exploration companies operating in Africa and South America. Mr. Gibbs has worked as a CFO for publicly listed mining companies for over 25 years.

Alan Ferry — Chairman

Alan Ferry is an independent businessman with over 28 years of experience in the investment industry following a career as a geologist, mainly in uranium exploration. With significant experience in mining analysis, mineral economics and corporate finance, Mr. Ferry has served on the boards and audit committees of several publicly traded mining and exploration companies, and is currently a member of the board of directors of Avalon Advanced Materials Inc. He holds a B.Sc. (Honours) in Geological Sciences from Queen’s University (1977) and holds a Chartered Financial Analyst designation (retired).

Maryse Belanger — Director

Maryse Belanger, brings over 35 years of experience in the mining industry with strengths in operational excellence and efficiency, technical studies and services. Most recently, Ms. Belanger President, COO and Director of Atlantic Gold Corporation -acquired in 2019 by St Barbara Mining. She previously served as CEO and Managing Director of Mirabela Nickel where she was responsible for the turnaround of the company and the reestablishment of the Santa Rita Nickel-Copper sulphide open pit mine in Brazil. Prior roles have included Senior Vice President, Technical Services at Goldcorp where she oversaw the global geology, mine planning and design, metallurgy, hydrology, tailings dam and geotechnical engineering functions, and Director, Technical Services for Kinross Gold Corporation for Brazil and Chile. Ms. Bélanger is an active Board Member of Sherritt International, and Pure Gold Mining and has served on the boards of Mirabela, True Gold, Newmarket Gold and Atlantic Gold. She was recently recognized by the Women in Mining UK 100 Global Inspirational Women in Mining Project as one the most inspirational Global Women in Mining. She holds a Bachelor of Science degree in Geology, a graduate certificate in Geostatistics and she is fluent in English, French, Spanish and Portuguese.

Wayne Drier – Director

Wayne Drier is a seasoned finance executive with over 20 years of corporate finance and capital markets experience within the global mining sector, spanning a wide range of commodities and jurisdictions. He is currently Chief Financial Officer of Ero Copper Corp., a TSX-listed copper company with operations in Brazil. Previous roles have included senior executive positions at Asanko Gold, Mantra Resources, Norilsk Nickel International and BHP Billiton. He holds a Bachelor of Business Science Honours degree from the University of Cape Town, South Africa.

Christian Milau — Director

Christian Milau, currently CEO and Director of Equinox Gold Corp., is a chartered professional accountant with executive experience in acquisitions, financing, mine development, construction and operations. Mr. Milau was CEO of Luna Gold, which through a series of mergers and acquisitions, became Equinox Gold in December 2017.He was also CEO of True Gold Mining, successfully negotiating and closing True Gold’s sale and acquisition by Endeavour Mining Corp. for $240 million in April 2016. At True Gold, he was instrumental in the development of the Karma Gold Project where, under his leadership, True Gold was able to successfully negotiate agreements with the government and community in Burkina Faso, recommence construction, complete development, and reach production, all in under 12 months. In addition to his extensive background in finance and capital markets, Mr. Milau brings important operational, government and stakeholder relations experience, including successfully negotiating various community, security, fiscal and tax agreements. Prior to True Gold, Mr. Milau held senior positions at Endeavour Mining Corp., New Gold Inc., and in investment banking at BNP Paribas in London.

Ted O’Connor, P.Geo., M.Sc., B.Sc.— Director

Ted O’Connor is a Professional Geoscientist with more than 22 years of experience, predominantly in the uranium exploration industry. Prior to joining Plateau Energy Metals in 2014, Mr. O’Connor was with Cameco, one of the world’s largest uranium producers, where he was Director of Corporate Development. In that role he was responsible for evaluating, directing and exploring for uranium deposits throughout North America, Australia, South America and Africa. Mr. O’Connor successfully led new project generation from early exploration through to discovery on multiple unconformity uranium projects. Prior to joining Cameco, Mr. O’Connor was an exploration field and underground mine geologist for major mining companies and junior explorers searching for gold, diamonds and base metals.


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