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Frontier Lithium announces geomechanical drilling program and provides update on PAK Lithium project

Exploration Programs

General Office

2736 Belisle Drive

Val Caron, ON P3N 1B3

T. 705.897.7622

F. 705.897.7618

Frontier Lithium announces geomechanical drilling program and

provides update on PAK Lithium project

Sudbury, Ontario, September 26, 2017 – Frontier Lithium Inc. (TSX.V: FL) (the “Company”)

announces the continuation of its technical drilling program on its PAK Lithium Project (the "Project"),

in the Red Lake mining district in Northwestern Ontario, Canada.

The drilling campaign recommenced Friday, September 15, 2017 and is expected to last

approximately four (4) weeks. The objective of this drilling is to collect additional data essential for

improving geomechanical parameters around the PAK deposit. This program follows up from drilling

that was conducted in Spring 2017 and the subsequent recommendations of additional drilling. This

program is comprised of approximately 1,500 metres (“m”) of diamond drilling that will support a

Definitive Feasibility Study level for assessing a low cost mining scenario of potential open pit

operations at the PAK Lithium Project.

In addition to the above announcement, Frontier Lithium is pleased to provide the following project

and company updates:

 An independent environmental company was recently retained to perform a gap analysis and

prepare a work plan to supplement the ongoing Environmental Baseline Study for the support of

future Project permitting. The study design outlines the range of permits which may potentially be

required for the Project as its development proceeds from exploration, through advanced

exploration, and into possible operations and eventual closure.

 The near completion of an environmental baseline study currently being conducted forms an

important component of the overall Project permitting process. Environmental baseline data are

used to establish the current environmental status and aboriginal community status of the Project

area, and of those lands adjacent to the Project which may be affected by mining activities.

Monitoring programs that have been established during the baseline study will continue in order to

assess any future Project-related impacts.

 The Company experienced some delays from metallurgical testwork during the Pre-Feasibility

Study (“PFS”), and as such Frontier Lithium will extend the timeline allotted for the PFS but still

expects it will be completed and reported in calendar 2017. Since the success of the project

revolves around exacting control and reduction of potential contaminants, rigorous quality control

methodologies are a key to this project’s success.

 Frontier Lithium will be attending the Mines and Money Americas conference in Toronto, Canada

this October 2 to 4, 2017 for the primary purpose of participating on an Ontario Government

hosted panel discussing Opportunities for Mining Companies in the province. In addition, the

Company will be represented at the Chicago Resource Expo on October 13, 2017. It is

encouraged that investors and interested parties attend these events as they are outreach

opportunities between investors and Company representatives.

Mr. Garth Drever, P.Geo., is the "Qualified Person" for Frontier defined under NI 43-101 and

General Office

2736 Belisle Drive

Val Caron, ON P3N 1B3

T. 705.897.7622

F. 705.897.7618

has reviewed and approved the technical information contained in this news release.

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. Approximately CAD $5.5

million of exploration work has been conducted from 2013 to 2017 on the deposit which boasts its

lithium in a rare, high-purity, low-iron spodumene. 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 inferior 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 believes the

resource can be developed into a viable operation. The Company is currently conducting a pre-

feasibility study to assess the economic viability and technical feasibility of producing lithium

concentrates. If production of lithium concentrates can be established from Frontier, the possible

second stage of investment and longer term prospect is to further process 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.

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 is one of the highest grade lithium mineral resources in North America which has a current Measured

and Indicated Resource of 7.89 million tonnes of 1.73% Li2O equivalent (eq.) or 1.58% Li20 and 104 ppm

Ta2O5 and an Inferred Resource of 295,600 tonnes of 1.35% Li2O eq. or 1.20% Li2O and 103 ppm Ta2O5

which has a technical/ceramic grade spodumene with low inherent iron (below 0.1% Fe2O3). The deposit has

adjacent zones that are enriched in tantalum and rubidium.

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.

General Office

2736 Belisle Drive

Val Caron, ON P3N 1B3

T. 705.897.7622

F. 705.897.7618

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.

-End-

General Office

2736 Belisle Drive

Val Caron, ON P3N 1B3

T. 705.897.7622

F. 705.897.7618