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Reporting assumptions

These choices persist and are added to shared URLs.

Ownership basis

Show the full project inventory before ownership adjustment.

Display scale

Display contained quantities in millions of ounces or tonnes.

Resource treatment

Normalise Resources to exclude Reserves: where a project is flagged inclusive, net Reserves out of Resources so the figure is additional Resources beyond Reserves. Unknown-convention rows are shown as stated.

Resource total

Total Resource includes Inferred (JORC convention). Totals are re-derived from category rows wherever the document discloses them.

Recovery basis

Show the issuer's headline recoverable figure as reported. Lithium-brine reserves already have the brine-processing recovery factor applied; everything else is shown as stated.

Commodity view

Primary view: each commodity in its own contained unit (oz / t).

PAK Lithium Project

Ontario, Canada · Developing · 92.5% ownedUnverified

Current R&R by category

Whole-project rollup at the latest vintage per category: printed project-level rows are preferred, and mining areas are summed (tonnes-weighted grade) only where the issuer prints no project-level row. Per-area and per-source detail in the Current R&R table below.

Category	Tonnes (Mt)	Grade (% Li2O)	Contained (Mt LCE)	As at
Measured	16.38 Mt	1.62% Li2O	0.65 Mt LCE	30 Nov 2023
Indicated	20.53 Mt	1.53% Li2O	0.78 Mt LCE	30 Nov 2023
Inferred	18.59 Mt	1.51% Li2O	0.69 Mt LCE	30 Nov 2023
Total Resources	24.37 Mt	1.60% Li2O	0.97 Mt LCE	30 Nov 2023
Proved	16.19 Mt	1.58% Li2O	0.63 Mt LCE	28 May 2025
Probable	14.94 Mt	1.42% Li2O	0.53 Mt LCE	28 May 2025
Total Reserves	31.13 Mt	1.51% Li2O	1.16 Mt LCE	28 May 2025

Sub-category rows are as disclosed (no Reserves-treatment netting); the Total rows honour the Resources treatment and Inferred-policy toggles, so components may not sum to the Total.

Dotted tonnes/grade are derived under the active Resources treatment: tonnes are netted of (or grossed by) the reserve tonnage alongside contained, and grade is re-derived as netted contained ÷ netted tonnes — not the published figures.

Cut-off grade

0.65% Li2O · 0.80% Li2O

Price assumption

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JORC code year

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Peer benchmark — developing Li projects (28 with resources)Resource size P38Resource grade P63View on grade-tonnage chart →

Percentile of this project's current total Resource among covered peers (P100 = largest / highest grade). Basis and Inferred toggles apply.

Data quality

Latest source: FRONTIER LITHIUM'S FEASIBILITY STUDY CONFIRMS CA$932M NET PRESENT VALUE AND LOW-COST CONCENTRATE SUPPLY FOR PAK LITHIUM PROJECT · 28 May 2025
Reporting code: unknown
Convention: inclusive
Currency assumption: US$
Disagreement flags: 2 rows

Current R&R

Resources

Area	Category	Tonnes (Mt)	Li		As at	Source	Provenance
Area	Category	Tonnes (Mt)	Grade (% Li2O)	Contained (Mt LCE)	As at	Source	Provenance
Total	Total Resources	24.37 Mt	1.60% Li2O	0.97 Mt LCE	30 Nov 2023	derived from 9 rows

Reserves

Area	Category	Tonnes (Mt)	Li		As at	Source	Provenance
Area	Category	Tonnes (Mt)	Grade (% Li2O)	Contained (Mt LCE)	As at	Source	Provenance
Total	Total Reserves	31.13 Mt	1.51% Li2O	1.16 Mt LCE	28 May 2025	Table 3: Summary of Mineral Reserve EstimateUnverified Evidence record PAK Lithium Project Total Reserve · Li · as at 2025-05-28 Reported figure Area Whole project Basis 100% Ore tonnes (t) 31131000.0000 Grade 1.5100 Contained (t LCE) 1159837.0000 Classification Reserve Source trail FRONTIER LITHIUM'S FEASIBILITY STUDY CONFIRMS CA$932M NET PRESENT VALUE AND LOW-COST CONCENTRATE SUPPLY FOR PAK LITHIUM PROJECT Table 3: Summary of Mineral Reserve Estimate Published 2025-05-28 Verification Approved; not independently verified · Model extracted QA WARN: cross-category subtotal — this total_reserve row on area 'Open Pit - Total' equals the sum of the same area's proved+probable leaves — a per-deposit M&I/P&P-style total (t24 LUN/LUG NI 43-101 class). Policy keeps category leaves + the whole-project Total; adjudicate per the per-property-totals precedent before approval. QA WARN: this project is reported as TWO parallel partitions of the same total — deposit-named leaves AND pure process/method labels (Open Pit / Underground / Heap Leach / Concentrator …) whose tonnages match the deposit leaves across multiple categories. Storing both double-counts; policy keeps the deposit breakdown — reject this method/process partition (verify which the issuer headlines before rejecting the other side). QA WARN: mining_area 'Open Pit - Total' looks like a table SUBTOTAL line, not a leaf area — approving it alongside the leaf areas double-counts. Reject it (or reject the leaves) before approval. \| QA fix: area=null \| printed whole-project Total P+P 31,131kt @ 1.51%, 469kt Li2O verified (headline "31.1Mt @ 1.51%"; Table 4 labels this exact row "PAK Lithium Project") — full-set grand-total keeper; "Open Pit - Total" area is a section-label artifact (all reserves are open pit); disagree with reject-warns for this row only Copies a pre-filled issue record so you can send it through your normal channel.	notes (5) Source: FRONTIER LITHIUM'S FEASIBILITY STUDY CONFIRMS CA$932M NET PRESENT VALUE AND LOW-COST CONCENTRATE SUPPLY FOR PAK LITHIUM PROJECT · published 28 May 2025 Ref: Table 3: Summary of Mineral Reserve Estimate Unknown code — Reporting code not yet captured for this row. Cutoff 0.65% Li2O — Cut-off grade assumption from the source statement. QA notes: QA WARN: cross-category subtotal — this total_reserve row on area 'Open Pit - Total' equals the sum of the same area's proved+probable leaves — a per-deposit M&I/P&P-style total (t24 LUN/LUG NI 43-101 class). Policy keeps category leaves + the whole-project Total; adjudicate per the per-property-totals precedent before approval. QA WARN: this project is reported as TWO parallel partitions of the same total — deposit-named leaves AND pure process/method labels (Open Pit / Underground / Heap Leach / Concentrator …) whose tonnages match the deposit leaves across multiple categories. Storing both double-counts; policy keeps the deposit breakdown — reject this method/process partition (verify which the issuer headlines before rejecting the other side). QA WARN: mining_area 'Open Pit - Total' looks like a table SUBTOTAL line, not a leaf area — approving it alongside the leaf areas double-counts. Reject it (or reject the leaves) before approval. QA fix: area=null printed whole-project Total P+P 31,131kt @ 1.51%, 469kt Li2O verified (headline "31.1Mt @ 1.51%"; Table 4 labels this exact row "PAK Lithium Project") — full-set grand-total keeper; "Open Pit - Total" area is a section-label artifact (all reserves are open pit); disagree with reject-warns for this row only
Open Pit - PAK	Proved	2.52 Mt	1.97% Li2O	0.12 Mt LCE	28 May 2025	Table 3: Summary of Mineral Reserve EstimateUnverified Evidence record PAK Lithium Project Proved · Li · as at 2025-05-28 Reported figure Area Open Pit - PAK Basis 100% Ore tonnes (t) 2520000.0000 Grade 1.9700 Contained (t LCE) 123650.0000 Classification Reserve Source trail FRONTIER LITHIUM'S FEASIBILITY STUDY CONFIRMS CA$932M NET PRESENT VALUE AND LOW-COST CONCENTRATE SUPPLY FOR PAK LITHIUM PROJECT Table 3: Summary of Mineral Reserve Estimate Published 2025-05-28 Verification Approved; not independently verified · Model extracted Copies a pre-filled issue record so you can send it through your normal channel.	notes (2) Source: FRONTIER LITHIUM'S FEASIBILITY STUDY CONFIRMS CA$932M NET PRESENT VALUE AND LOW-COST CONCENTRATE SUPPLY FOR PAK LITHIUM PROJECT
Open Pit - PAK	Probable	1.43 Mt	1.94% Li2O	0.07 Mt LCE	28 May 2025	Table 3: Summary of Mineral Reserve EstimateUnverified Evidence record PAK Lithium Project Probable · Li · as at 2025-05-28 Reported figure Area Open Pit - PAK Basis 100% Ore tonnes (t) 1427000.0000 Grade 1.9400 Contained (t LCE) 69244.0000 Classification Reserve Source trail FRONTIER LITHIUM'S FEASIBILITY STUDY CONFIRMS CA$932M NET PRESENT VALUE AND LOW-COST CONCENTRATE SUPPLY FOR PAK LITHIUM PROJECT Table 3: Summary of Mineral Reserve Estimate Published 2025-05-28 Verification Approved; not independently verified · Model extracted QA INFO: recompute differs 1.13% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±2.08% (rounding granularity) — treated as reconciled. Copies a pre-filled issue record so you can send it through your normal channel.	notes (3) Source: FRONTIER LITHIUM'S FEASIBILITY STUDY CONFIRMS CA$932M NET PRESENT VALUE AND LOW-COST CONCENTRATE SUPPLY FOR PAK LITHIUM PROJECT
Open Pit - Spark	Proved	13.67 Mt	1.51% Li2O	0.51 Mt LCE	28 May 2025	Table 3: Summary of Mineral Reserve EstimateUnverified Evidence record PAK Lithium Project Proved · Li · as at 2025-05-28 Reported figure Area Open Pit - Spark Basis 100% Ore tonnes (t) 13670000.0000 Grade 1.5100 Contained (t LCE) 509438.0000 Classification Reserve Source trail FRONTIER LITHIUM'S FEASIBILITY STUDY CONFIRMS CA$932M NET PRESENT VALUE AND LOW-COST CONCENTRATE SUPPLY FOR PAK LITHIUM PROJECT Table 3: Summary of Mineral Reserve Estimate Published 2025-05-28 Verification Approved; not independently verified · Model extracted Copies a pre-filled issue record so you can send it through your normal channel.	notes (2) Source: FRONTIER LITHIUM'S FEASIBILITY STUDY CONFIRMS CA$932M NET PRESENT VALUE AND LOW-COST CONCENTRATE SUPPLY FOR PAK LITHIUM PROJECT
Open Pit - Spark	Probable	13.51 Mt	1.37% Li2O	0.46 Mt LCE	28 May 2025	Table 3: Summary of Mineral Reserve EstimateUnverified Evidence record PAK Lithium Project Probable · Li · as at 2025-05-28 Reported figure Area Open Pit - Spark Basis 100% Ore tonnes (t) 13514000.0000 Grade 1.3700 Contained (t LCE) 457505.0000 Classification Reserve Source trail FRONTIER LITHIUM'S FEASIBILITY STUDY CONFIRMS CA$932M NET PRESENT VALUE AND LOW-COST CONCENTRATE SUPPLY FOR PAK LITHIUM PROJECT Table 3: Summary of Mineral Reserve Estimate Published 2025-05-28 Verification Approved; not independently verified · Model extracted Copies a pre-filled issue record so you can send it through your normal channel.	notes (2) Source: FRONTIER LITHIUM'S FEASIBILITY STUDY CONFIRMS CA$932M NET PRESENT VALUE AND LOW-COST CONCENTRATE SUPPLY FOR PAK LITHIUM PROJECT