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Frontier Lithium Inc. Announces Positive Preliminary Feasibility Study FOR the Pak Lithium Project, Northwestern Ontario

Economic Studies

General Office

2736 Belisle Drive

Val Caron, ON P3N 1B3

T. 705.897.7622

F. 705.897.7618

FRONTIER LITHIUM INC. ANNOUNCES POSITIVE PRELIMINARY FEASIBILITY STUDY FOR THE PAK

LITHIUM PROJECT, NORTHWESTERN ONTARIO

Sudbury, Ontario , March 2, 2018 – Frontier Lithium Inc. (TSXV: FL) (“Frontier” or “the Company”) is

pleased to release the results of a Preliminary Feasibility Study (“PFS”) for the PAK Lithium Project

located approximately 175 kilometers north of Red Lake, Ontario . Included with this PFS is the

announcement on the updated Mineral Resource Estimate for the PAK Lithium Project.

The results of the P FS (see tables 1-5 below) include a pre-tax net present value at a 8 percent discount

rate of $ 448 million with a pre -tax internal rate of return of 46.5 percent and a post -tax NPV at a 8

percent discount rate of $301 million with a post-tax IRR of 38.3 percent.

The PFS is based on an updated mineral resource estimate completed by Todd McCracken, P.Geo,

outlined in the National Instrument 43-101 technical report update as reported in Table 6.

Highlights from the PFS, with the base -case premium technical grade lithium concentrate of 7.2% Li 2O

(TG_SC7.2) price of $1,250 (U.S.) per tonne, chemical grade lithium concentrate of 6.6% Li2O (CG_SC6.6)

price of $750 (U.S.) per tonne and an exchange rate of $1.25 USD/CAD, are as follows (all figures in

Canadian dollars unless otherwise stated):

 Life of Mine Revenue is 1,859 million

 Pre-production Capital is $ 147 million with a contingency of 10% included within the initial

capital. Pre-production is for a 2 year period.

 Sustaining Capital $37 million for the Life of Mine (“LOM”).

 Pre-tax NPV (8% discount rate) of $448 million and internal rate of return of 46.5%.

 Post-tax NPV (8% discount rate) of $301 million and internal rate of return of 38.3%.

 Pre-tax Cash Flow of $1,013 million over 16 year LOM.

 Post-tax Cash Flow of $700 million over 16 year LOM.

 Positive Cash-flow is realized in year 2 of production.

 5.8 million tonnes of mill feed averaging a combined 2.00% Li2O.

 11.5 year open pit operation, 4.5 year underground operation.

 Mill operates at average tonnage of 1,090 tonnes per day.

 Total production of 1.14 million tonnes of technical grade concentrate of 7.2% Li2O

 Total production of 115,500 tonnes of chemical grade concentrate of 6.6% Li2O

“The compelling PFS results display the PAK Lithium Project’s ability to firstly become a high margin,

low cost producer of a unique premium low-iron spodumene concentrate which is in very high

demand by the global lithium market. In addition, an additional by-product output of chemical grade

concentrate is produced which could also be further upgraded as required by the lithium battery

market” comments Trevor Walker, President and CEO of Frontier Lithium . “Despite the strong PFS

results, I see room to further optimize the resource and engineering designs and have already

transitioned to feasibility level work. This significant milestone also sets the path forward to

strategically expand the resource, support ongoing lithium compound testwork, progress our

discussions with potential offtake, as well as furthering collaboration agreements with our

neighboring First Nation communities."

General Office

2736 Belisle Drive

Val Caron, ON P3N 1B3

T. 705.897.7622

F. 705.897.7618

Table 1

Production Profile

Total Tonnes Milled 5.8 million

Diluted Head Grade 2.00% Li2O

Mine Life 16 years

Daily mill commercial throughput 1,090 tpd

Lithium Recovery 78.5%

Total TG Production (7.2% Li2O) 1.14 MT

Total CG Production (6.6% Li2O) 115,500 tonnes

Table 2

Economic Assumptions and Parameters

Exchange Rate (USD/CAD) $1.25

Discount Rate 8%

TG_SC7.2 Price (USD) $1,250/tonne

CG_SC6.6 Price (USD) $750/tonne

Table 3

Project Economics

Pre-Tax

NPV (8% Discount Rate) $448 M

Internal Rate of Return 46.5%

Cumulative Cash Flow $1,013 M

Post-Tax

NPV (8% Discount Rate) $301 M

Internal Rate of Return 38.3%

Cumulative Cash Flow $700 M

Table 4

Capital Requirements $ Million

Site Prep/ Infrastructure 45.6

Mill Processing 59.3

Power Distribution 6.4

Open Pit Equipment 12.9

Water treatment and waste management 9.5

Contingency 13.5

Total Pre-production Capital Cost 147.3

Total Sustaining Capital Cost 36.6

Table 5

Operating Costs $/tonne processed

Direct Open Pit Mining Cost 4.06

Direct Underground Mining Cost 84.07

Direct Processing Cost 18.01

General Office

2736 Belisle Drive

Val Caron, ON P3N 1B3

T. 705.897.7622

F. 705.897.7618

Table 6 Updated 2018 Mineral Resource Calculation

Cut-

off

Resource

Category

Commodity Geologic Zone Tonnes (t) Li2O

(%)

Ta2O5

(ppm)

Cs2O

(%)

Rb2O

(%)

Contained

Li2O (t)

0.4% Li2Oeq

Measured Lithium Upper Intermediate Zone (UIZ) 324,720 3.95 60 0.03 0.12 12,830

Lithium Lower Intermediate Zone (LIZ) 920,330 1.72 104 0.03 0.29 15,848

Lithium Total Lithium Zone 1,245,050 2.30 93 0.03 0.24 28,678

Lithium / Tantalum / Rubidium Bulk Pegmatite 1,245,050 2.30 93 0.03 0.24 28,678

0.4% Li2Oeq

Indicated

Lithium Upper Intermediate Zone (UIZ) 333,200 3.23 70 0.04 0.20 10,776

Lithium Lower Intermediate Zone (LIZ) 5,909,500 1.89 102 0.04 0.31 111,690

Lithium Total Lithium Zone 6,242,700 1.96 100 0.04 0.30 122,465

Tantalum / Rubidium Central Intermediate Zone (CIZ) 1,011,300 0.80 117 0.08 0.58 n/a

Lithium / Tantalum / Rubidium Bulk Pegmatite 7,254,000 1.69 102 0.04 0.34 122,465

0.4% Li2Oew

Measured + Indicated

Lithium Upper Intermediate Zone (UIZ) 657,920 3.59 65 0.03 0.16 23,605

Lithium Lower Intermediate Zone (LIZ) 6,829,830 1.87 102 0.04 0.30 127,538

Lithium Total Lithium Zone 7,487,750 2.02 99 0.04 0.29 151,143

Tantalum / Rubidium Central Intermediate Zone (CIZ) 1,011,300 0.80 117 0.08 0.58 n/a

Lithium / Tantalum / Rubidium Bulk Pegmatite 8,499,050 1.78 101 0.04 0.33 151,143

0.4% Li2Oeq

Inferred

Lithium Upper Intermediate Zone (UIZ) 13,000 3.56 44 0.03 0.12 463

Lithium Lower Intermediate Zone (LIZ) 1,819,000 2.09 95 0.02 0.29 37,982

Lithium Total Lithium Zone 1,832,000 2.10 95 0.02 0.28 38,439

Tantalum /Rubidium Central Intermediate Zone (CIZ) 85,000 1.16 151 0.08 0.49 n/a

Lithium / Tantalum / Rubidium Bulk Pegmatite 1,917,000 2.01 97 0.02 0.29 38,439

Grand Total Bulk Pegmatite 10,416,050 1.82 100 0.04 0.32 189,582

1) For the sole purpose of this resource estimation, Li2O equivalent was determined based on lithium and tantalum grades, prices

($400 per tonne of 6% spodumene concentrate and $150 per kg of 30% tantalite concentrate) and their respective recovery ratio

(78.5% recovery for lithium and a 50% recovery for tantalum from bulk pegmatite). No credit was included for rubidium, cesium or

any of the other elements contained for the purpose of this estimate

2) Li2O content in the CIZ is predominantly associated with lithian micas and without metallurgical testing not deemed recoverable,

therefore, not included in the Li2O contained and subsequently the Li2O equivalent calculation for the purpose of this report.

3) The UIZ and LIZ are technical/ceramic -grade lithium zones (high -grade lithium with low inherent iron (0.1% Fe 2O3 from whole rock

analysis). The iron content of spodumene contained within the LIZ increases as the contact with iron-rich metasedimentary country

rocks are approached, but it has been noted that a concentration below 0.1% wt.% Fe 2O3 is maintained to within about 1 meter of

the pegmatite-metasediment contact.

4) Calculation is based on 6,307m of drilling in 32 holes with an average depth of 160m to a maximum depth of 360m vertical in the

deposit, 294m of production drilling for 68 blast holes for the 300 tonne UIZ bulk sample in 2015, and 32 channels covering 2 16m at

surface.

5) Mineral Resources are not Mineral Reserves having no demonstrated economic viability. Results are presented undiluted and in situ.

6) Measured, Indicated and Inferred Resources were evaluated from drill hole and channel sample results using a block model

approach (krig interpolation) with Surpac software.

7) (Calculations used metric units (meters, tonnes and ppm). Results were rounded to reflect their estimated nature. Tonnes are

rounded to reflect the accuracy of the estimation. Grades reported in percent were rounded to two decimals while g rades reported

in part per million (ppm) were rounded to the closest integer.

General Office

2736 Belisle Drive

Val Caron, ON P3N 1B3

T. 705.897.7622

F. 705.897.7618

Table 7 Reserve Table

Reserve Category Million Tonnes Li2O%

Open Pit

Proven 1.19 2.39

Probable 2.93 1.93

Sub total 4.12 2.06

Underground

Probable 1.65 1.84

Total (OP+UG) 5.77 2.00

Due Diligence

The Mineral Resources for PAK Lithium Project disclosed in this news release have been estimated by

Mr. Todd McCracken, P.Geo., an employee of WSP Canada Inc and independent of Frontier. By virtue of

his education and relevant experience, Mr. McCracken is "Qualified Person" for the purpose of National

Instrument 43 -101. The Mineral Resource has been classified in accordance with CIM Definition

Standards for Mineral Resources and Mineral Reserves, ( November 2014). Mr. McCracken, P.Geo., has

read and approved the contents of this press release as it pertains to the disclosed Mineral Resource

estimate.

Qualified Persons and 43-101 Disclosure

Garth Drever, P.Geo, Vice President Exploration for Frontier Lithium Inc. is a Qualified Person as defined

by NI 43 -101 and has reviewed and approved the contents of this news release. Mr. Drever has been

involved with all aspects of the PAK Lithium project since 2013.

Todd McCracken, P.Geo, Principal, Manager – Mining , at WSP Canada is an independent Qualified

Person as per National Instrument 43 -101, and is responsible for the estimation of the PAK Lithium

Project mineral resource. Mr. McCracken has reviewed and verified that the technical information

contained herein is accurate and approves of the written disclosure of same.

Johnny Canosa P.Eng., Sr. Mining Engineer for Nordmin Engineering Ltd., is an independent Qualified

Person as defined by NI 43-101 and has reviewed and approved the contents of this news release.

Mr. Canosa is responsible for Financial Analysis, Open Pit Mine Planning, Operating and Capital Costs.

Roy Levesque P.Eng., Sr. Mining Engineer for Nordmin Engineering Ltd., is an i ndependent Qualified

Person as defined by NI 43 -101 and has reviewed and approved the contents of this news release.

Mr. Levesque is responsible for Underground Mine Design, Mine Planning and Scheduling.

General Office

2736 Belisle Drive

Val Caron, ON P3N 1B3

T. 705.897.7622

F. 705.897.7618

Kurt Boyko, P.Eng., Consulting Specialist - Mechanical for Nordmin Engineering Ltd., is an independent

Qualified Person as defined by NI 43-101 and has reviewed and approved the contents of this news

release. Mr. Boyko is responsible for process plan design.

About Frontier Lithium Inc.

Frontier’s goal is to become a low-cost, fully integrated lithium and tantalum producer through

development of the PAK lithium deposit in Ontario, Canada. Frontier maintains a tight share structure

with management ownership exceeding 30% of the Company. The initial target market is the glass-

ceramic industry which consumes roughly one-third of global lithium supply and is currently faced with

monopolistic conditions, coupled with major lithium producers increasingly directing output toward

supporting battery manufacture.

Ceramic/glass customers prefer to source technical-grade (low-iron) spodumene concentrate in excess

of 7% lithium oxide (Li2O), if available, to avoid lower grade petalite concentrates, or paying much higher

prices for battery grade lithium compounds.

The PAK lithium deposit remains open in all directions and Company Management is working towards

developing a viable operation. The Company is currently completing a pre-feasibility study to assess the

economic viability and technical feasibility of producing lithium concentrates. Frontier’s goal is to first

establish a viable technical grade spodumene concentrate operation. A possible second stage of

investment and longer term prospect is to further process a combination of some of PAK’s output to

produce the higher purity lithium compounds required for lithium battery technologies used in the

electrification of transportation and electric grid storage applications.

General Office

2736 Belisle Drive

Val Caron, ON P3N 1B3

T. 705.897.7622

F. 705.897.7618

About the PAK Lithium Project

The PAK Lithium Project lies close to the boundary between two geological sub-provinces of the western

Superior geologic province in northwestern Ontario and hosts a rare metals pegmatite deposit. The

deposit is an LCT (lithium- cesium- tantalum) type pegmatite. These types of pegmatites have been the

principal source of hard rock lithium, tantalum, rubidium and cesium ores mined in the world but there

are comparatively few commercially-viable deposits.

Frontier is actively exploring its 100% owned project which contains the Pakeagama Lake pegmatite. The

PAK deposit has a current Measured and Indicated Resource of 8.5 million tonnes of 1.78% Li2O and an

Inferred Lithium Resource of 1.9 million tonnes of 2.01% Li2O which has a technical/ceramic grade

spodumene with low inherent iron (below 0.1% Fe2O3).

The deposit now has a known 500m strike length with an estimated true width varying from 10m to

125m with a sub-vertical orientation. The resource remains open to depth and along strike to the

northwest and southeast.

Company Contact Information

Trevor R. Walker

President & CEO

2736 Belisle Drive Val Caron, ON. P3N 1B3 CANADA

T. +001 705.897.7622

F. +001 705.897.7618

Media Requests

Joseph Mansourian

Manager, Investor Relations

2736 Belisle Drive Val Caron, ON. P3N 1B3 CANADA

T. +001 705.618.0070

F. +001 705.897.7618

Additional information regarding Frontier Lithium is available on SEDAR at www.sedar.com under the

Company's profile and on its website at www.frontierlithium.com, including various pictures of ongoing

work at the project.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the

policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

General Office

2736 Belisle Drive

Val Caron, ON P3N 1B3

T. 705.897.7622

F. 705.897.7618

Forward-looking Statements

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the

policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

This release includes certain statements that may be deemed “forward -looking statements”. All

statements in this release, other than statements of historical facts, that address future production,

reserve potential, exploration dri lling, exploitation activities and events or developments that the

Company expects are forward -looking statements. Although the Company believes the expectations

expressed in such forward -looking statements are based on reasonable assumptions, such stateme nts

are not guarantees of future performance and actual results or developments may differ materially from

those in the forward-looking statements. Factors that could cause actual results to differ materially from

those in forward looking statements includ e market prices, exploitation and exploration successes,

continued availability of capital and financing, and general economic, market or business conditions.

Investors are cautioned that any such statements are not guarantees of future performance and tho se

actual results or developments may differ materially from those projected in the forward -looking

statements. For more information on the Company, Investors should review the Company’s registered

filings what are available at https://www.sedar.com